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Seminars
Geva Nagar| An M.Sc. student. Associate Professor Dan Michaels, Department of Aerospace Engineering, Technion – Israel Institute of Technology
Dr. Anna Clarke | Department of Aerospace Engineering | Technion – Israel Institute of Technology
Yakov Bobrov | An M.Sc. Student under the supervision of Prof. Pini Gurfil, Department of Aerospace Engineering, Technion – Israel Institute of Technology
Edo Barlell, An M.Sc. student | Associate Professor Oksana Stalnov, Department of Aerospace Engineering, Technion-Israel Institute of Technology
Omri Hamo | A Ph.D. Student. Associate Professor Joseph Lefkowitz, Aerospace Engineering Faculty, Technion, Israel and Dr. Dan Lev, School of Aerospace Engineering, Georgia Institute of Technology, Atlanta
Julia Belitsky | A PhD student under the supervision of Prof. Emeritus Tanchum Weller and Dr. Emanuel Ore, Aerospace Engineering Department, Technion
Syamantak Nath, Ph.D | A PhD student under the supervision of Associate professor Joseph K. Lefkowitz, Aerospace Engineering Department, Technion
Maxim Freydin, PhD | Holds a BSc from the aerospace department, Technion. His PhD work started at Duke University and finished in 2021 at the Technion.
A guest Seminar - Ameer Marzok | Postdoctoral Researcher, The Department of Civil Engineering and Engineering Mechanics, Columbia University
Guest Seminar | Prof. Chang-Hun Lee | Guest seminar | Korea Advanced Institute of Science and Technology (KAIST)
Ofek Hertzman | A MSc student under the supervision of Assoc. Prof., Oksana Stalnov
Prof. Daniel Delahaye - a guest seminar - ENAC : French Civil Aviation University, Toulouse, France
Sahar Shpitz | A MSc student under the supervision of Prof. Prof. Emeritus Barry Greenberg and Dr Yair Mor-Yossef
Prof. Israel Wygnanski - a guest seminar - AME Department, The University of Arizona. Also, Professor Emeritus Tel Aviv University
Duncan Ohno | PostDoctoral Fellow at Technion in the Flow Physics Lab of Dr. Michael Karp
Prof. Ashwini Ratnoo - a guest seminar - Aerospace Engineering Department, Indian Institute of Science, Bangalore, India.
Michael Presman | MSc student under the supervision of Prof. Emeritus Alon Gany.
Lotan Arad Ludar | a PhD student under the supervision of Prof. Emeritus Alon Gany
Liraz Mudrik | Ph.D. student under the supervision of Prof. Emeritus Yaakov Oshman
Roni Goldin | A MSc student under the supervision of Prof. Emeritus Benveniste (Benny) Natan
Lukas Badum | A PhD student under the supervision of Assoc. Prof. Beni Cukurel
Ariel Baron | A MSc student under the supervision of Prof. Pini Gurfil (AE) and Dr. Hector Rotstein (EE)
Ofer Dagan is a PhD student in the Aerospace engineering sciences department at CU boulder.
A. James Clark Professor of Engineering Fellow of the National Academy of Inventors (NAI) Department of Mechanical and Aerospace Engineering Department of Biomedical Engineering (secondary appointment) School of Engineering and Applied Science The George Washington University
Dr. Luca Magri - Guest lecture - Imperial College London; The Alan Turing Institute; University of Cambridge; Technion (visiting)
The presentation provides an overview of the space program and industry system research and education efforts performed in recent years. It is concentrated at Why's and How's of the national...
Modern flight configurations are trending towards slender wings of larger wingspans and lower structural weight. New designs are driven by performance requirements (reduction of fuel consumption, or flight at the...
The use of small unmanned aerial vehicles (UAV) has extensively increased during the last decade. Their most common applications are in sport events’ photography, search-and-rescue missions and military reconnaissance. Additional...
New aircraft designs are more flexible than ever before, making them susceptible to adverse aeroelastic phenomena such as a large dynamic response to atmospheric turbulence and even flutter. On the...
A wide range of devices employ airfoils operating at relatively low chord Reynolds numbers and unsteady flow conditions, such as UAV’s and wind turbines. The process of designing airfoils for...
The design and development of high-performance, efficient, and sustainable aircraft for a wide range of applications requires a fundamental understanding of the underlying aerodynamic principles. For instance, the aerodynamic phenomena...
The deployment of autonomous vehicles in several domains requires efficient planning and tracking of trajectories that can satisfy constraints pertaining to the operating environment and the vehicle's kinematics, while minimizing a...
The research presents a novel approach for propelling high-speed, submerged, marine vehicles. The operating principle is based on the operation of a ram-rocket (ducted-rocket) motor (solid or hybrid), where water...
Experimental measurements in actual combustors typically produce measurements that are narrowly relevant to only specific geometries and not easily generalized. Moreover, in experimental studies, relevant mixing scales (e.g., Batchelor scales)...
This talk will present a novel algorithm for early detection of aeroelastic flutter when onset conditions are approached during flutter tests of flight vehicles. The approached stability boundary is detected...
Brownian motion, the random motion of particles suspended in a medium, was first studied mathematically by Einstein and Smoluchowski. They obtained the particle's mean square displacement (MSD) in a quiescent...
Hot Wire Anemometry (HWA) methodology has yet to fully realize its potential. As a consequence, nowadays, the use of HWA is unapplicable to flow conditions in the range of 0.4<M<1.2....
This work suggests and demonstrates a method for generating reduced chemical kinetic mechanisms for aviation fuels. Small but accurate mechanisms are needed for use in Computational Fluid Dynamics (CFD) combustion...
In this talk the flight software containing the GNC algorithms for a low-cost research missile will be presented. The research missile will be employed as a recoverable testbed for the...
Model-order reduction is an essential tool for large-scale systems introduced by modern technologies for which full order controller design and implementation may be numerically and computationally infeasible. Model order reduction...
Cavitation in the aircraft fuel systems can lead to unexpected damage to fuel-system components. Modeling fuel cavitation is challenging due, in part, to the fact that fuels are a complex...
In recent years, there is significant integration of composite elements in the aviation world due to their unique benefits. However, these elements also have disadvantages – the sensitivity to production...
Investigations of internal and external flow at high speeds have paramount importance in arriving at a sustainable propulsion and effective aerodynamics for supersonic/hypersonic transit. Mixing gaseous fuel and air mixture...
We analyse some of the main challenges in the geared mechanical transmissions of modern aeroengines such as large-bypass-ratio turbofans, open rotors and turboshafts/ turboprops in terms of efficiency, power density, weight, and...
Sound production via Joule heating has been observed since late 19th century. The term “thermophone” was coined soon after to define an acoustic transmitter, where an alternating electrical current produces...
A physical approach of calculating the laminar flame speed in homogeneous medium takes into consideration the preservation of Mass, Energy and Momentum, and using the Ideal Gases relations - yields...
In a real-world, stochastic pursuit-evasion game, a sudden change in the target's evasion maneuver generates an inevitable time delay at the pursuer's estimator, due to its inherent reliance on incomplete...
Unsteady fluid-combustion interactions in optical axisymmetric scramjet models are experimentally investigated in Mach 4.5 flows. The axisymmetric scramjet reveals generic fluid and combustion dynamics without the corner boundary-layer effects that...
The progress towards lighter and more efficient aircraft structures has led to some very flexible wing configurations that deform to a great extent under flight loads. Such designs experience unique...
Turbulent flows are composed of a wide range of large- and small-scale coherent motions in both the momentum field and the particle field. These motions are responsible for practical engineering...
Multiphase flows laden with interacting polydisperse particles are frequently encountered in aerospace propulsion, atmospheric flows, as well as in environmental and medical applications. The stability characteristics of such flows can...
A major ambition of aerospace industries is to improve flight performance of commercial and military aircraft. One of the key activities towards this ambition is the development of high performance structural...
Aircraft structures, specifically wings, are inherently flexible, resulting in aeroelastic interactions between the deformed configuration and the aerodynamic forces acting on it. One such aeroelastic interaction is flutter - a...
In Internal Combustion Engines (ICE’s), the combustible mixture is ignited at each cycle by a time-controlled spark discharge. The success of the flame initiation depends to a large extent on...
Flow control- manipulation of flow behavior have received significant research attention since the beginning of boundary layer theory, due to the notable drawbacks of unplanned flow separation: acoustic noise problems,...
As industry, businesses, and families day to day life rely more and more on new technologies and electrical appliances, economic reports present a growth in energy demand. This leads to...
The oscillatory behavior of large air bubbles produced from the instantaneous rupture of a submerged, finite volume container is characterized experimentally. Continuous gas release in the form of a unidirectional...
Sensor networks comprise a group of agents equipped with sensing devices and communicating capabilities in order to solve the common task of cooperative estimation of a detectable physical process. In...
We investigate the problem of autonomous object classification and semantic SLAM, which in general exhibits a tight coupling between classification, metric SLAM and planning under uncertainty. We contribute a unified...
Turbulent flows are composed of a wide range of large- and small-scale coherent motions. These motions are responsible for practical engineering effects, like the generation of turbulent drag. Scale interactions...
Through natural selection, animals evolved the abilities required to survive in a complex dynamic world: they accurately perceive their surroundings, map their environment and localize themselves and others within it,...
Grid fins are actually an array of short lifting surfaces arranged in a lattice. They appeared in engineering literature in the late eighties of the last century, but they have...
A major current threat on Unmanned Aerial Vehicles (UAVs) and Air-to-Surface Missiles (ASM) is being intercepted by Surface-to-Air Missiles (SAMs) with maneuvering capabilities. There are many methods to increase the...
A crucial part of the development of a complex system is its testing and validation. To support the design and validation process of a low-cost research missile, a hardware-in-the-loop testbed...
Investigation of the performance of experimental combustion devices relies heavily on proper diagnostics for characterization of operating regimes and validation of numerical modelling predictions. The primary goal of this work...
The supersonic combustion ramjet, or scramjet, is an air-breathing engine designed for cruise at Mach number of 5 and above. The high-speed flow within the combustor poses a major issue...
Destructive vibrations caused by stochastic external disturbances such as earthquakes, explosions, and fluid-structure interactions pose an insidious threat to various critical infrastructure and mechanical components. Among the most vulnerable and...
Ignition is a challenge for gas turbines, ramjets and scramjets where flow velocities in the combustor are high, resulting in short flow residence times. The success of ignition depends on...
Capacitively coupled radio-frequency thrusters (CCRFT) are an attractive propulsion option for nanosatellites due to their low operating power, relatively high thrust, and low erosion of the electrodes. Such thrusters can...
Classification and object recognition is a fundamental problem in many robotics and aerospace applications, such as autonomous driving, vision-based navigation, and search & rescue. The field has advanced much in...
In recent years, the use of multi-rotors has been drastically increased both in military and civil applications. Specifically, load transportation using a flock of rotary unmanned aerial vehicles (UAVs) has...
Fuel supply in microjet engines typically makes use of fuel vaporizers. These have a simple design however, their operation involves complicated physics including the disintegration of liquid jet under co-flowing...
In a general research setting, theoretical models combined with simulation provide the backbone for guidance, navigation, and control systems design. While these are both powerful tools to represent physical systems,...
This talk outlines an effort to understand the impact of inlet isolator physics on the combustion of scramjet engines under actual flight relevant high speed conditions. The objective of the...
The main goals in aircraft design nowadays are noise and emission reduction, together with performance improvement.  These can be achieved straightforwardly with lightweight, large-span configurations. However, light aircraft are inherently...
Multirotor UAVs are becoming widespread for both civil and military uses, such as photography, surveillance and payload transportation. A slung load system, in which the payload is connected to several...
High-enthalpy arc-heated supersonic wind tunnels are characterized by test gases that are heated by a high-current electric arc and then expanded and accelerated through a convergent-divergent nozzle. In this work,...
The commercial aviation industry is motivated to continuously improve landing performance without involving radical changes to aircraft design or operation. In the presence of strong gusts the landing is considered...
During the design phase of a project, each airborne system is designed and tested in order to demonstrate it can perform under different environmental loads. Acoustic noise is one of...
Micro gas turbines generally employ uncooled turbine blades and their thrust is limited by the maximum allowable gas temperature. A miniature cooling scheme embodying effusion cooling may significantly enable higher...
The simulation of the aerothermal environment surrounding vehicles moving at hypersonic speed is a complex problem due to its multi-physics and multi-scale nature. Progress in the ability to accurately model...
Numerous animals including fish, birds, bats and insects use appendages (fins and wings) with varying levels of flexibility, to provide propulsion and/or weight support as they move through either air...
Simulation of dynamic response of Aero-Servo-Elastic Wind-Tunnel model to Non-Uniform gust was conducted. The research is done under the “Gust Load Alleviation techniques assessment on wind tunnel Model of advanced...
Flight control law clearance provides the conditions needed for the system to operate in the stability boundaries. One way to do so is to test all the parameters and variables...
A guided rocket system performance is often evaluated by solving an optimal control problem which minimizes a pre-defined objective function, e.g. control effort, while satisfying required boundary conditions. However, rocket...
While SHM science and engineering have matured in recent decades, by now indeed a coherent and well-established branch of structural mechanics, most practicalities are of qualitative nature. The present work...
Aerofoil self-noise produced by flow separation and stall is relatively little understood regarding the underlying generation mechanisms. The focus of this talk is to provide an improved level of understanding...
In the upcoming decade, ground-to-space laser links will become abundant in scientific and industrial applications and Unmanned Aerial Vehicles (UAV) will transfer increasingly larger volumes of data. Major companies such...
Fluid-structure interaction in hypersonic flow has seen an increased interest among researchers in response to the worldwide race to sustainable hypersonic flight. The interaction between inertial, elastic, aerodynamic, and thermal...
Micron-sized aluminum powder is added to solid propellants in order to increase their performance and to suppress combustion instabilities. During the combustion, aluminum particles accumulate and form agglomerates. Agglomeration may...
In this work we test the concept of intercepting a moving target with a quadrotor while using  classical guidance laws originally developed in the field of missile guidance. First, the dominant...
Model-order reduction is an essential tool for large-scale systems introduced by modern Technologies for which full order simulation and controller design and implementation may be numerically and computationally infeasible. Model...
Solid-propellant rocket propulsion is commonly used for both military and civilian launch systems. In solid rocket motors the required thrust profile is determined by its design and cannot be changed...
The numerical detection of resonances using dynamical indicators is an efficient tool for eval- uating the long-term stability and for discriminating between order and chaos. In this regard, methods based...
Engineering devices employing rotors such as propellers on UAV’s, wind and tidal turbines play a vital role in both propulsion and energy extraction.  These devices feature complex unsteady turbulent flowfields...
Time difference of arrival geolocation allows for the position estimation of a terrestrial emitter by measuring its signals with 3 or more receivers. This type of geolocation, also known as...
There has recently been a large increase in development activities of remotely-controlled and autonomous miniature aerial vehicles (MAV). Military, scientific, law enforcement and mapping usage are among the important potential...
Correct estimation of load bearing capabilities and prediction of failure has an important role in design and quality control of filament wound (FW) composite fiber reinforced plastic (CFRP) structures such...
Six-degrees-of-freedom (6DOF) simulations to outline the flight path of missiles and predict their rigid body behavior, are normally conducted in the time domain using flight-mechanic equations of motion with nonlinear...
Satellite formations have numerous applications. However, the initial establishment of such formations can require a high fuel expenditure, due to cross-track distance requirements. This work proposes a strategy to significantly...
Transfer to sustainable energy is the requirement of the present hour & there has been a considerable push towards renewable non-combustion-based energy generation. Nevertheless, it is estimated that conventional combustion...
Studies on rarefied gases consider gas flows where the characteristic length or time scale is of the order of the molecular mean-free path or time, respectively. Under such conditions, the...
Autonomous navigation missions require online decision making abilities, in order to choose from a given set of candidate actions an action that will lead to the best outcome. In a...
The challenges of nonlinear Kalman filtering are presented, and a number of proposed solutions are examined. A Kalman filter forms an a posteriori estimate of the state of a dynamic...
The research investigates the effect of insulation fiber spatial orientation and aluminum content in the propellant composition, on particle erosion and thermochemical ablation. Solid propellants exhibit self-sustained, high-temperature combustion and...
Non-Destructive Testing (NDT) is one of the major requirements in aerospace structural design. Appropriate use of NDT guarantees safety in aerospace and is thus a subject of highest attention. In this...
Many industrial and scientific applications require accurate measurement of radiation flux emitted by target surfaces. One of its most important applications is thermal infrared imaging for non-contact measurement and monitoring...
Subject: Futuristic Aircraft Designs and a look at how big companies develop them. Benefit: Fun and educational, aimed at the airplane enthusiast crowd. No equations or calculations, just lots of...
With increasing use of electric-powered aircraft, there is a need for accurate mission planning tools. Electric aircraft differ from conventional ones in a few aspects, most notably in the efficiency...
A brief overview of the Ohio State College of Engineering (COE) will be presented, with the emphasis on the strategic research pillars and the research strengths and priorities. The focus...
Solid propellant rocket motors are simple, easy for handling, and ready for immediate operation. That is why they are the preferred rocket motors in multiple applications and missions. However, in...
Aeroelastic responses, such as accelerations measured in flight, are non-stationary signals in which the frequency content varies with flight speed and, therefore, in time. Aeroelastic responses might also be nonlinear...
High flow speeds and significant compressibility levels can be found in a wide range of single- and multi-phase reacting flows. These include various propulsion and energy conversion systems, such as...
The purpose of the study is to develop optimal spatial guidance-laws under terminal angular constraint in atmospheric flight, which enable the pursuer to reach its target under various optimization objectives...
In recent years, flight vehicles are becoming progressively more elastic and as a result, aeroelastic phenomena are becoming more prominent. A gusty environment or a high-load maneuver can result in...
A major motivation for research in combustion science and technology is to reduce emissions from power plants, large scale industrial furnaces, automobiles, aircrafts, etc. Development of low emission gas turbines...
Transportation of external loads by helicopters is very common and is used for a fast transfer of large loads to places that are hardly accessible by other means. In these...
In this talk, we will look at recent computational developments of fluid-structure interaction (FSI) simulations and aerodynamic design for power production in aerospace and renewables. The approach of coupling a...
The early phases of a new project are the optimal time to perform major changes in the design configuration. The cost of such changes at these stages is minimal while...
We study magnetomechanical instabilities in magnetoactive elastomer (MAE) composites undergoing finite strains in the presence of a magnetic field. In particular, we consider MAE composites with chain-like microstructure. We analyze...
Scramjet engines are an effective hypersonic propulsion, as they breath air at hypersonic speeds and slow it down to supersonic speeds in the combustor, allowing for effective heat addition.  Liquid...
Micro Aerial Vehicles (MAV) require extremely lightweight propulsion systems. Whereas most current MAV use electric batteries as power sources, the presented work examines the possibility of using Phase-Change Materials (PCM)...
Flow separation is an important phenomenon to consider when designing airplane wings, stabilizers, and other fluid dynamics applications such as ground vehicles and internal diffuser flows. When unattended flow separation...
Currently, among aerospace industries, there is an increasing demand for advancements in rocket precision. Although these systems have provided great technological advancement in this arena, they are accompanied by high...
Guiding a team of pursuers to simultaneously intercept a target (Salvo-attack) is crucial when dealing with modern target defenses. The main objective of the current research is to develop cooperative...
Re-entry and hypersonic vehicles, as well as rocket motors, are exposed to extreme heat loads, shear forces and chemically aggressive gasses. To protect the structure of the vehicle, ablative thermal...
In this talk I'll present two experimental investigations where unsteady and turbulent flow physics form the common underlying theme. The first study, which is fundamental in nature, was aimed at...
In the past two decades, plasma propulsion for space applications has seen an increasing use for all types of satellites, from hefty GEO communications satellites, through tiny cubesats and to...
Hybrid propulsion can be a good alternative to the solid and liquid propellant systems; recently it has been the preferred choice for space tourism missions. In comparison to the solid...
Elbit Systems Inc. is developing an autonomous drone for long range missions. In order to save time and to use electrical batteries having short time power supply, this drone is...
The Ramjet engine is a simple air-breathing device without any moving parts such as compressors or turbines. The basic idea behind ramjet propulsion is aerodynamic compression of air, making it...
In many cases helicopters carry external loads that are connected by slings to a hook on the fuselage (slung loads). The main advantages of this method are the capability to...
The progress of a homogenous combustible mixture wave can occur within two discreet combustion regimes, deflagration and detonation. According to the literature, it seems that there is no consent about...
Commercial fluorescent tracer particles used for particle image velocimetry are available in a very limited range of sizes and densities, and are prohibitively expensive for large-scale experiments. Therefore, a method...
This seminar addresses the design, error assessment and analysis of a low cost, adaptive, laser range finder based, terrain following system for unmanned aerial vehicles (UAVs). Such a system enables...
A deregulated electricity supply market, based on the implementation of renewable energy power plants, vastly promotes the emerging “distributed power generation” concept. Therefore, numerous small and efficient power units are...
The long-standing competition between advancing projectiles penetration power, on one hand, and increasing the efficiency of protective structures, on the other hand, has resulted in a very large body of...
Abstract: Understanding of the mechanical behavior of soft composites is essential for many research fields and applications such as ultrasound diagnostics, vibration mitigation, adhesives, packaging materials, and biological tissues. The...
Combustion processes can be greatly improved using reactive species created in non-equilibrium plasma for the initiation of fuel oxidation and pyrolysis. One such process is volumetric ignition, inherent to homogeneous...
Due to breakthrough advances in miniaturization, the scale of spacecraft components can now be reduced to the millimeter scale. Termed as "smart dust", the concept of spacecraft on a chip promises...
Taking an image of a planet proves to be extremely challenging when the planet orbits a star tens of parsecs away from our sun. Light signals from an Earth-like exoplanets...
Derived based on an idealized, perfect information differential game, the acclaimed DGL1 guidance law was shown to guarantee hit-to-kill performance in the linearized, deterministic case, involving an interceptor possessing superior...
In this talk, the use of active control to change the dynamics of idealized fluid-structure interaction (FSI) systems will be introduced. Here the term "active control" means that the control...
The mathematical theory of nonlinear cooperative control relies heavily on notions from graph theory and passivity theory. A general analysis result is known about cooperative control of maximally equilibrium-independent passive systems, relating steady-states of...
Shaping the trajectory of an interceptor is crucial for numerous reasons, including the ability to take into account environmental factors and countermeasures. Moreover, we gain the ability to specify the...
It has been recognized since the pioneering experiments of Reynolds in 1883 that surface roughness plays a significant role in the dynamics of shear layers. This is a classical problem...
We study dipolophoretic (DIP), i.e. the combined induced – charge electrophoretic (ICEP) and dielectrophoretic (DEP) interactions between a pair of identical conducting circular cylindrical particles suspended in an unbounded electrolyte...
Long-term satellite formation keeping must account for the effects of orbital perturbations. While long-term formation keeping around the Earth has been thoroughly studied, lunar formations are yet to be further...
Over the years, different methods have been developed in order to obtain suitable sprays for different applications. The most important characteristics of a spray include the drops diameter, droplet size...
In 1809, almost a century before the first human flight, the polymath Thomas Young opened his lecture “On the functions of the heart and arteries” with the following statement: “The...
With the onset of autonomous spacecraft formation flying missions, the ability of satellites to autonomously navigate relatively to other space objects has become essential. To implement relative navigation, relative measurements...
The tools necessary for the aeroelastic design of very flexible aircraft with geometric nonlinearities are limited. The present work describes a novel model that integrates a modal formulation with a...
Boron based gelled fuels are promising candidates for certain future ramjet applications, offering potential improvements in performance and/or safety over conventional liquid and solid systems. For this purpose, a fundamental...
In the past decade growing numbers of nanosatellites are being used in space, with an-ever increasing mission demands. Nevertheless, due to severe limitations on on-board power, there is currently a...
Blunt nose shapes such as flat-face, hemisphere and ellipse are of supreme interest among the bodies moving at supersonic speeds due to the need for housing payloads, radar or infrared...
At linear flutter onset conditions, an aircraft undergoes self-excited harmonic oscillations in response to any initial trigger, leading to a homogenous frequency-domain flutter equation. Accordingly, common-flutter methods search for the...
Aft-sting mount is the most common method of mounting wind tunnel models when performing aerodynamic (balance) measurements in wind tunnels, especially when testing missile configurations. The influence of this type...
The problem of finding optimal trajectories is a basic problem in aerospace engineering with many different solution algorithms. One widely investigated branch is the problem of finding shortest paths under...
The general trend in missile development is towards longer, faster, high-maneuverability missiles. This makes missiles increasingly more flexible and therefore more susceptible to aeroelastic effects, such as static and dynamic...
The current research is focused around the development of a variable cycle micro-turbofan engine an existing micro-turbojet with less than 1kN thrust. The project involves the conversion of a single...
Air-breathing engines as ramjets, scramjets, turbojets, and turbofans have higher specific impulse and energetic performance and, hence, longer range for the same amount of fuel than rockets. Ramjets operate at...
Buckling of a slender elastic column under static compressive load is a fundamental and classical problem in structural stability. It has been examined over more than 250 years, starting with...
Understanding flow instability mechanisms in boundary layers is valuable for designing more efficient aerodynamic and hydrodynamic surfaces. This talk consists of two parts; the first discusses instabilities and transition to...
This work presents a new approach for solving the coverage problem for large areas given a limited number of sensors. We consider the problem where there is a given area needed...
The thrust of a solid rocket motor (SRM) mainly depends on the combustion chamber pressure, nozzle geometry and propellant characteristics. The most commonly used method for a prescribed thrust profile...
Recent progress in experimental biomechanics has provided reliable hyperelastic constitutive parameters for a variety of soft biological tissues like brain, kidney and liver. These laboratory verified strain energy functions enable...
Satellite navigation constellations orbit the Earth in medium and geosynchronous orbits. These high altitudes raise the operational and launching costs, but provide wide coverage, which may be redundant if only...
Two main research projects that are developed at the Applied Research Laboratory in Active Controls, Avionics and AeroServoElasticity LARCASE are presented in the area of green aircraft technologies. In the...
A summary of the lunar environment is provided as background to the issues that await resolution by structural engineers who will design habitats for long-term stays on the Moon, initially...
Over the past twenty years, the field of Computational Fluid Dynamics (CFD) has been evolving drastically, following the progress of computational resources and hardware. The past few years, Large Eddy...
A stationary Leading-Edge-Vortex (LEV) formed over the upper wing surface is one of the primary mechanisms to achieve high lift force on wings. While most applications of LEVs have utilized...
As the use of autonomous robotic vehicles is increasing in everyday applications, issues regarding the performance of these vehicles become important research problems. The main performance concerns are optimization issues,...
Aeroelastic flutter is a destructive instability phenomenon for which dedicated flight test campaigns are considered compulsory according to airworthiness regulations. In these tests, the dynamic characteristics of the aeroelastic system...
This research focuses on a particular case of distributed space systems technology: spacecraft rendezvous missions. More specifically, the case of a two-phase satellite rendezvous maneuver is examined for rigid bodies...
Military aircraft typically carry under-wing stores such as bombs or external fuel tanks. During a mission, one or more stores may be ejected with the aid of a jettison force that...
Following a configuration change of F110 engines in the IAF, fire balls had been seen during start-up in several engines. In the new configuration several components are replaced, including fuel...
The performance of pulsar-based navigation for deep space exploration is investigated by considering the deep space DAWN mission. The flight trajectory of the DAWN spacecraft is used in the numerical...
Recent years have seen rapid growth in the small-unmanned air vehicles (UAV) industry. This increase in drone usage causes many disruptions in our everyday lives, particularly noise. Increased noise regulations...
Energy supply is the basis for the development of a modern society. Nowadays most of the energy supply is based on fossil fuels. Nevertheless, the use of renewable energy has...
Chemical rocket propulsion systems can be divided into solid, liquid, and hybrid propellant systems. Despite the numerous benefits that hybrid rocket systems enjoy over both solid and liquid propellant systems,...
Moving objects with a single robot is a common practice; however, the weight and dimensions of the cargo oftentimes limit the task. To aid this, we propose using multiple coordinating robots...
Averaging is a valuable technique to gain understanding in the long-term evolution of dynamical systems characterized by slow and fast dynamics. Recent contributions proved that averaging can be applied to...
In this talk, we will explore the concept and physics of Thermphone sound production. Thermophone transducers produce sound by establishing a periodic heat flux into a fluid medium. This heat...
Micropatterned materials are important in the construction of superhydrophobic surfaces for drag reduction and protective coatings. A new generation of these materials incorporates a layer of immiscible fluid into the...
Managing the Triangle: Technology, Regulations and the Market of commercial drones. New breakthroughs in safety measures that enabled new air traffic regulations, which pave the path to a multi-billion dollar...
The presentation will describe the limitations of current rotors, explain why several countries have recently started to work again on the cycloidal rotor, a technology invented 80 years ago, and...
The study explores wing elasticity effects on the store separation process, based on computational fluid dynamics simulations. The nominal test case is that of an unmanned aerial vehicle that carries...
Since the dawn of aviation there have been many attempts to build fixed-wing aircraft that take off and land vertically, called VTOLS. These aircraft solve the need for the use...
The interaction between turbulence, chemical kinetics and droplet dynamics plays an important role in reacting flows and can lead to instability. Understanding the underlying mechanisms that drive these processes is...
This seminar will summarize the outcomes of the different research projects dealing with kW-scale ORC (Organic Rankine Cycle) power systems that have been conducted for more than 10 years at...
By changing the norm for Geostationary (GEO) and Lower Earth Orbit (LEO) satellite manufacturers’ antenna fabrication technology, incorporating NSLComm’s transformational product will increase bandwidth on NanoSats and GEOs by a...
In the traditional non-motorized aerial vehicles (Paragliders, sailplanes and hang gliders) world, pilots use a “Variometer” tool to identify that they are in an updraft (such as hot air thermal),...
Sea snakes are air-breathing aquatic animals. They have lungs. When diving, the volume of their lungs changes with depth, making them non-neutrally buoyant at least for a part of the...
Research on performance of thermal protection systems is significant for the development of products for aerospace applications, such as internal insulation for solid rocket motors, nozzles, and external thermal protection...
The present work summarizes the design process of a new continuous closed-loop hot transonic linear cascade. The facility features fully modular design which is intended to serve as a test...
Founded in 2014, NewRocket is a Technion spin-off developing rocket engines for the space and aviation markets. The company core technology is based on decades of research activities conducted in...
In recent years, revolutionary technologies of inlet design were developed in response to environmental concerns such as reduction of noise and pollution. Part of these efforts are directed towards reduction...
Flutter analysis in the production environment is typically based on linear models, where the structure is modeled via a finite-element model, and the aerodynamics via a linear panel code. The...
Ranging from the aerospace to the health industries, understanding of wave propagation phenomenon in solids is pivotal to a large number of practical applications, e.g., reduction or elimination of undesirable...
In this study we focus on a zero-sum linear-quadratic differential game. One of the main features of such a game is that the weight matrix of the minimizer’s control cost in the...
Following a short overview of my recent work on the modelling of the electromechanical response of liquid metal embedded elastomers and the non-linear behavior of cellular materials, this seminar will...
Airfoil noise is a dominant component in the acoustic signature of a wide variety of aerodynamic systems. In line with current interest in reducing aircraft noise, the present work studies...
Propulsion and combustion scientists and engineers have been fighting combustion instabilities in solid and liquid rockets and in air-breathing propulsion systems for many decades.  This has been recognized as one...
The ramjet is an air-breathing propulsion engine, which relies on the ram effect for compressing the entering air, thus, eliminating the need for a compressor. Ramjets have no moving parts,...
Rapid development of additive technologies expands new horizons in the field of soft robotic¹ design. These technologies are new, which implementations, in the field of aerospace, are incompletely described. The...
The majority of practical estimation and control solutions are based on system models with additive Gaussian noises. Gaussian distribution, being light tailed, does not capture significant fluctuations that occur in...
Gel fuels are non-Newtonian fluids with a yield stress. In the absence of sufficient shear stress, the gel has a solid-like behavior. Under shear stress the viscosity decreases to allow...
Most sharks are heavier than the water they swim in and therefore must generate hydrodynamic lift to compensate for the lack of buoyancy. To this end, they can use many...
Solid propellants comprised of aluminum and water show high theoretical energetic performance and are considered environmentally friendly, since the burning products contain non-toxic and carbon-free materials (aluminum oxide – Al2O3,...
Solar radiation pressure (SRP) is a caused by photons transferring their momentum to the satellite. The magnitudes of atmospheric drag and SRP are similar for spacecraft in circular orbits at...
Hybrid rocket systems have the potential to high performance and wide operational capabilities, as well as throttling and shutdown. An essential component in any rocket system is the ignition mechanism....
Differential Games for pursuit evasion problems have been investigated for many years. Differential games, with linear state equations and quadratic cost functions, are called Linear Quadratic Differential Game (LQDG). In...
Unmanned Aerial Vehicles (UAVs) are known to be advantageous for many applications in security, monitoring of natural risks of environment, management of ground installations, and agriculture. In recent years, the...
The talk will present an overview of the research activities on Electric Propulsion (EP) and other low temperature plasma technologies at both the university of Southampton and Mars Space Ltd,...
Boundary layer control by blowing enabled early combat jet airplanes to operate from shorter runways by increasing their lift coefficient at low speeds. The concepts of boundary layer and circulation...
The use of composite materials in engineering applications requiring peak performance and superior reliability is growing rapidly. Failure of these materials is often characterized by the onset and progression of...
The generation of monodisperse tracer particles is a crucial element of particle image velocimetry (PIV) flow measurements, but most commercially available particles are expensive to purchase, difficult to manufacture in-house,...
In this talk, we will present our research on cooperative optimal defensive strategies in multiple-vehicle engagements. Specifically, we consider the scenario in which two target aircraft are being pursued by...
The research examines the idea of using hypergolic ignition in a hybrid motor. The main advantages of the hybrid motor are the facts that it is simple, controllable and exhibits...
The push towards lighter and more efficient aircraft structures has led to modern aircraft configurations that are more elastic than ever, featuring large elastic deformations in their operating conditions. This trend...
There are two main approaches to design autopilot and guidance systems: “Single-Loop” and “Two-Loop”. In the “Single-Loop” approach there is no definite autopilot, and the guidance command is applied directly...
A morphing or adapting aircraft is a term used to define an airplane that enables mid-flight geometry change, in order to allow a shift in performance and aerodynamic traits which...
Composite materials take a large part in the aerospace industry, and keep getting ever more dominant in air-borne structures. There is at least one field in which composite materials had...
Modern weapon systems used on high-performance aircraft have complex electronic assemblies, optical components and sensitive mechanisms that are required to survive and operate in a challenging dynamic environment throughout their...
Civil aerial refueling is a futuristic concept that was proposed for reducing the environmental impact and improving the efficiency of long-haul air transportation.  It will allow a passenger aircraft (the...
The dynamics of aircraft-propulsion flows is difficult to understand because of the intertwined interactions between the acoustics, combustion and hydrodynamics. The understanding, modeling and control of these flows are in...
Composite materials play an important role in various engineering applications including aerospace industry. This is due to the attractive mechanical properties and strength-to-weight ratio of composite materials. Moreover, these properties...
It is common to find aerospace structural parts which behave in a one- or two-dimensional manner. This behaviour allows us to simplify the analysis, in comparison to that which would...
A simple optimization method is proposed for multi-wire CTA probe design. The optimization computes the sensitivities to density, velocity and total temperature for each wire, based on empirical Nu –...
The study and optimization of combustion processes requires precise knowledge of the temperature and species’ concentration fields. In such applications, measurements are often taken locally by intrusive techniques that affect...
Accurate pose estimation and 3D reconstruction are important in a variety of applications such as autonomous navigation or mapping in uncertain or unknown environments. Bundle adjustment (BA) and simultaneous localization...
High accuracy navigation in GPS-deprived uncertain environments is of prime importance to various robotics applications. In such scenarios, it has been recently shown that online sensor calibration and multi-robot collaboration,...
Solid-propellant rocket motors for tactical missiles require low cost, low maintenance level, immediate availability and high performance. Their main goal is to supply the required thrust and impulse to the...
Nowadays there is a growing demand for improvement in rocket and air-breathing performance and safety. There is a huge potential in combining ramjet engines with gel fuel that can carry...
The importance of the conceptual design stage within the process of engineering design of a new product is well known. This stage is considered the most important in terms of...
We present a novel approach for identifying disturbance sources in wall-bounded shear flows, which can prove useful for active control of boundary layer transition from laminar to turbulent flow. The...
We study the flow generated by the periodic pitching motion of a 2D rigid plate about its fixed end in an unbounded incompressible fluid which is otherwise at rest, as...
4D printing is a novel concept that emerges in recent years, benefiting from the rapid development of advanced 3D printing technologies and active materials. In 4D printing, upon external stimuli...
Of the many ideas being considered to attempt to meet the strict standards dictated by protocols to reduce harmful NOx and PM emissions to the atmosphere is the use of...
A novel bio-inspired propulsion system for autonomous vessels is suggested using two vertical oscillating hydrofoils in a side-by-side configuration. This research examines the feasibility of such a system for enabling...
The aerodynamic phenomena that keep insect aloft are drastically different from that of a fixed-wing or rotary-wing based aircraft. While there is a good level of understanding of the principles...
Extemporary short intermolecular distances of nitro groups in the crystal lattice of polyniro compounds led towards invocation of activities in the research of free spaces (free volumes, DV) in crystals...
The Reactive materials under study are solids mixtures of Aluminum, Tungsten and different types of Fluor-Polymer powders. The metal powders used as the fuel and the Fluor- Polymers as oxidizers...
Ion thrusters are nowadays routinely used on satellites for attitude control and for dedicated space missions, such as GOCE and Dawn. The commonly used propellant for ion thrusters is the...
In exo-atmospheric guidance the control is the thrust vector. A recent thrust vector approach has revealed that in optimal guidance the thrust inclination in an inertial frame is constant. Thus,...
Skin drag in shear flows can be significantly reduced by maintaining laminar versus turbulent flow, rendering the control or delay of transition to turbulence of engineering interest. Controlling transition from...
Cavitation, i.e. the appearance of vapor cavities inside an initially homogeneous liquid medium, occurs in different situations commonly characterized by the pressure decrease below the vapor pressure of the liquid....
Cooperative strategies are becoming more and more popular with the continuing evolution and advancement in decision making capabilities of autonomous vehicles. Utilizing multiple agents to perform a given task can...
The phenomenon of explosion (or self-ignition, not to be confused with detonation) of fuel mixtures is well known, both as a desired phenomenon, such as the ignition of the fuel...
The ease of use of sophisticated advanced technologies, methods and equipment often affects the in-depth understanding of causes, rules and principles which underlie the analysed processes and phenomena; e.g., for...
The use of advanced composite structures is continuously increasing in the modern aerospace industry. Military aircraft were the first to take advantage of the weight saving potential of composites. The...
Flow control has emerged as an enabling technology to improve vehicles’ performance.  It involves passive and active devices to affect a beneficial change in wall-bounded or free-shear flows.  The presentation...
The futuristic concept of civil autonomous aerial refueling using the Boom-Receptacle system, demands new operational paradigms. Requirements, such as passenger comfort, demand that the Tanker aircraft will approach the Receiver...
Belief space planning (BSP) is a fundamental problem in robotics and artificial intelligence, with applications including autonomous driving, sensor deployment and active SLAM. The goal is to autonomously determine best...
An emerging goal within the aviation industry is to replace conventional jet fuel with alternative fuel sources. However, the combustion properties of these potential fuels must be thoroughly characterized before...
The SPALO is a new class of solid propellants, augmented by storable liquid oxidizers. Their structure is similar to conventional solid propellants; however, instead of solid oxidizer particles they contain...
In this talk we discuss the regularity conditions required for the classical Cram´er-Rao lower bound (CRLB) for real-valued (nonrandom unknown) parameters to hold. It is shown that the commonly assumed requirement that the...
The application of novel plasma devices has shown promise for the enhancement of ignition and flame-holding in combustion systems. However, the mechanism by which different discharge types interact with the...
There are several scenarios where shock waves impinge on porous media. Each of these scenarios requires different numerical and experimental approaches to predict the intricate shock diffractions and the developing...
The research deals with the feasibility of an early start of a ramjet air intake using CFD analysis. For this purpose, a two-dimensional air inlet geometry with six (6) holes...
During the course of this research, a cooperative interception scenario between multiple maneuvering targets, missiles defending said targets (’defenders’), and missiles attacking said targets (’missiles’) was investigated. The talk will...
In a jet spray flame a jet of liquid fuel spray emerges from a small orifice of a burner into a stagnant air environment. The fuel jet entrains air from...
Hydrogen is considered to be the fuel of the future due to its environmental friendly reaction products, only water, and its high specific reaction energy, about three times more than...
Belief space planning (BSP) and perception are fundamental problems in robotics and artificial intelligence, with applications including autonomous navigation and active SLAM. State-of-the-art BSP approaches assume that data association (DA), i.e....
During the last decades the use of micro-air vehicles (MAV) in intelligence, surveillance, and reconnaissance missions has grown significantly. These missions require the MAVs to present high maneuvering skills while...
We investigate autonomous navigation and target tracking in unknown or uncertain environments, which have become core capabilities in numerous robotics applications. In lack of external source of information (e.g. GPS),...
There are two main approaches to design autopilot and guidance systems: “Single-Loop” and “Two-Loop”. In the “Single-Loop” approach there is no definite autopilot, and the guidance command is applied directly...
In recent years, there has been a tremendous growth in the unmanned aerial system market, for various operational requirements and scenarios. Moreover, in nowadays the demands are also derived in...
The need to reduce the size of large discrete models is a reoccurring theme in computational mechanics in recent years. One situation which calls for such a reduction is that...
Understanding the spray ignition process is of utmost importance due to the fact that modern combustors in aircraft need to be (re)-ignited under a wide range of (sometimes extreme) operating...
In many civil and military missions unmanned vehicles may be expected to cooperate with each other and act as a team. Two main aspects of the cooperation are addressed in...
The MRO (Maintenance, Repair, Overhaul) principles for the Graduated Aeronautical Engineers are essential. The design engineers should consider two issues while performing the design of airborne vehicles: Airworthiness and life...
We study hydrodynamic efficiency of a slender fish furnished a with separated caudal fin that swims by flexing its body (say, left-right). Most fish look and swim that way. Hydrodynamic...
The research addresses the problem of guiding a constant speed vehicle to a stationary target while enforcing a terminal heading constraint. A path that minimizes control effort and avoids obstacles...
We investigate the problem of autonomous navigation in unknown or uncertain environments, which is of interest in numerous robotics applications, such as navigation in GPS-deprived environments, mapping and 3D reconstruction,...
High-altitude, long-endurance (HALE) UAVs are characterized by very large aspect ratio wings and low structural weight, and therefore are inherently highly flexible. As a result, these platforms are more susceptible...
A major challenge for advanced propulsion and combustion technologies is obtaining stable combustion with a wide range of reactant compositions and temperatures. Being able to predict the combustion stability, flow...
In this study, the viability, performance, and characteristics of a turbojet-to-turbofan conversion through the use of a continuously variable transmission (CVT) are investigated. By an in-house thermodynamic simulation code, the...
Multi-agent systems (MAS) have been an important area of study over the past few years. This research will propose a real time sub-optimal solution for an agreement problem in multi-agent...
This seminar addresses the design and error assessment and analysis of a low cost terrain following system for UAVs. Such a system enables an aircraft to maintain a pre-defined vertical...
This incremental development project is focused around a versatile continuously-running high-speed micro gas turbine research facility, which is capable of matching full engine similarity conditions including pressure loading (synonymous with...
The research work will discuss investigations into the characteristics of Low Swirl Injector (LSI) technique as a viable modification to be used in the conversion of liquid fuelled aero-engines to...
Spacecraft formation and cluster flight control have seen growing interest in the last decade. However, the problem of finding the optimal debris collision avoidance maneuver for a member of a...
Recently, acoustic metamaterials with periodic microstructures (referred as phononic crystals) have attracted considerable attention due to their remarkable properties – such as negative elastic moduli, mass density, and refractive index...
Carriage of external slung loads by helicopters is a common method of transporting large and heavy loads. In many cases slung loads that are connected to the helicopter through a...
Albeit great advancement, transition to turbulence continues to be an intriguing subject, challenging many researchers worldwide. The current research covers several aspects of transition - The evolution of coherent structures,...
We present a novel approach to designing materials using the topological interlocking principle. Segmentation of monolithic materials into identical interlocked building blocks provides the structure with enhanced resistance to crack...
The first attempts to predict aerodynamically-generated sound based on direct solution of Navier-Stokes equations began in early 1990. This relatively new field has now come a long way. n. We...
High Area to Mass Ratio (HAMR) space objects in high Earth orbits experience oscillations in orbit eccentricity due to the force of the Solar Radiation Pressure (SRP). These variations, which...
This talk addresses the problem of "anytime" control strategy synthesis for dynamical systems, proposing a general framework based on the incremental refinement of a finite "concretization" of the system. We...
Assoc. Prof. Tal Shima's lecture will be on the topic: "Guidance of Aerial Vehicles - הנחיית כלים אויריים" In this short talk we will present some classical pursuit-evasion engagements between...
Pollutant emissions from combustion systems created increasing environmental and health concerns. Regulations controlling pollutant emissions steadily become stricter. Nitrogen oxides (NOx) are currently regarded as the most harmful pollutants emitted...
This study investigates a unique energetic material based on nano-porous silicon fuel impregnated with an oxidizer. This energetic material is very promising due to its integration potential with MEMS systems,...
This work focuses on the characterization of the plume of the CAMILA Hall thruster. A numerical model is developed and implemented in a computational code using a hybrid Particle-In-Cell scheme....
What is space and why do we want to go there? What are satellites and space- crafts and how do they work? Space environment is much different than the environment...
Prof. Pini Gurfil's lecture will be on the topic: The Distributed Space Systems Lab  -  "המעבדה למערכות חלל מבוזרות" The Distributed Space Systems lab performs research in astrodynamics, guidance, navigation...
In recent years, there has been an increasing number of contributions dealing with the control of multiple agent formations. Of the many control strategies for formation control, distance-constrained formation control...
It is known that a structure should resist loads without failure. For structures that contain humans, i.e. houses, boats, cars, aircraft etc., they do not stretch (or deform) a great...
A concise review of a series of studies on aeroelasticity and aerothermoelasticity of hypersonic vehicles conducted during the last 18 years, by the author and his students will be presented....
The use of multiple interceptors against a single target is an effective way of increasing the chances of success of an intercept. The basic method is salvo shooting, in which...
The diverse hummingbird family (Trochilidae) has unique adaptations for nectarivory, among which is the ability to sustain hover feeding. As hummingbirds mostly feed while hovering, it is crucial to maintain...
Cooperative or networked navigation are terms used to describe an approach whereby members of a community (or network) exchange information to generate a navigation solution of higher quality than would...
Flow separation and reattachment are widespread in engineering in general, and in aeronautics in particular. One of the issues that concern the researchers over the years is the possibility to...
Injection systems are integrated in a variety of applications including fuel injection systems, painting and coating processes, medical inhalers and more. In some applications, and particularly in fuel injection systems,...
New challenges in aerodynamic design of flight vehicles are sometimes met by changing the wing sweep angle during flight. Simulations of the wing deployment or folding process should include aeroelastic...
Aging metallic aircraft, manufactured in the early 70's, are still being operated around the world, and are subjected to new types of damage, appearing in new locations on the aircraft....
Small wind turbines located in urban environment, often suffer from low wind velocity regime and high wind fluctuation. The low wind regime, leads to increase in blades idle time, a...
In this seminar I will address some fundamental problems in the nonlinear mechanics of soft and biological materials; (i) the geometrically unique phenomenon of elastic fingering, a rate-independent instability observed...
Tracking a non-cooperative target is an important challenge in the field of robotics due to the fact that most targets are unknown and unspecified. This is especially true in unfamiliar...
The analysis of noise level emanating from a distant source is needed in a number of applications, most notably in environmental engineering. The sound pressure level (SPL) distribution is desired,...
One of the most widely considered topics in satellite cluster flight is the control of relative positions among satellites, referred to as cluster keeping. In general, satellite cluster keeping is...
One of the key issues in future space technologies is the relative position control of a satellite cluster, known as cluster flight. Cluster flight entails maximal and minimal inter-satellite distance...
The lecture describes the process of combining a hobby project and home manufacturing techniques to create a home built UAV system (ground station and drone for the FPV hobby). The...
The present work focuses on plume interactions in a convergent Hall thruster cluster for thrust vectoring. The analysis is done through a numerical model, using a custom hybrid- PIC code...
Polymer chain length statistics as it results from the polymerization process has long been known in chemistry but has not so far been applied to mechanics of elastomers. In the...
Market requirements for business, commuter and unmanned aircrafts generally lead to compact, low cost and fuel efficient small aero-engines. Design and technology requirements for small aero-engines, compared to the large...
Cooperative estimation has been an active area of research in recent time. The idea underlying most state-of-the-art methods is to share information, obtained separately by subsystems comprising the system, and...
The modelling of cracks and shearbands, arising from brittle and ductile response of materials, poses significant computational challenges. In this talk I will present our recent developments in the field...
Transition to turbulence initiated by linear transient growth mechanism in plane Poiseuille flow is demonstrated in the present study. A novel analytical approximation of the linear transient growth mechanism enables...
The seminar will present a computational and experimental study of the nonlinear aeroelastic behavior of a pre-tensed, high aspect-ratio, thin membrane strip. The goal of the study is to derive...
State estimation in dynamical systems with randomly switching coefficients is an important problem with a variety of applications. The most commonly met problems that are formulated within the random coefficients state-space approach,...
Case Study: Starling, Sandpiper and Robin Birds’ unique characteristics such as wing shape, flexibility, feathers, and flapping motion, result in high aerodynamic performance. Flapping flight mode is common in low...
Modern tracking systems are required to estimate the distribution of targets in a surveyed scene while coping with a variety of uncertainties, such as unknown number of targets, unknown target...
The earliest recorded studies on terminal ballistics date back to eighteenth century ideas by Euler and Robins who argued that projectile resisting force remains constant during the penetration process. Later...
The burning rate of a solid propellant is a fundamental characteristic, which is measured for every propellant composition that is aimed to be used in a rocket motor. The burning...
Thin layers appear in many applications in the field of aerospace engineering. Examples include external thin coatings of bare panels exposed to periodic solar radiation, or the internal thin glue...
Today, more than ever before, the necessity of producing low emissions gas turbines is of paramount importance. Reducing the emission of Nitrogen Oxides in particular has been of primary focus....
In the previous lectures an interesting new approach based on the special decomposition of the sensitivity function was introduced and discussed. This method optimizes the three major components (design loss,...
Optimization of the design loss The optimization of the design loss results in selecting the fastest reference models under the amplitude constraints of the actuators. It is possible to develop...
In optimization theories the difference (distance) between the optimal and actual case is called loss. These set of talks introduces a new theory which provides a new platform for control...
In recent years, active flow control (AFC) has become a new branch in fluid mechanics. The long term goal of the current research is to predict and understand the change...
Trailing edge noise is identified as a major component of airframe noise, particularly during airplanes approach for landing, when extensive use is made of high-lift devices. Consequently, significant efforts have...
The reduction of aeroacoustic noise is a major engineering challenge that affects a wide range of industries from air transport to wind energy. For instance, noise pollution for communities near...
Sea Lion Swimming: The main objective of this research is to explore a mechanism for underwater propulsion that leaves little traceable wake structure while producing high levels of thrust. A potential...
Trophy is an Active Protection System for ground vehicles (APS). First we’ll define what active protection is and what APS is. Then, we’ll present the main system challenges that we...
The aero-optic effect is a major topic of interest due to its relevance in various applications, which involve interactions between propagated laser beams and an inhomogeneous medium (such as the...
A methodology for measuring the interface fracture toughness of a crack between two isotropic, homogeneous materials and a delamination between two laminae of unidirectional composite materials of differing directions is...
The purpose of the one hour talk is to show why I believe the missile guidance and control field is both exciting and challenging. Examples of the application of mathematics,...
During atmospheric re-entry at hypersonic speed or at very high speed flight in the atmosphere, vehicles experience extremely high thermal loads for relatively long times: the classical thermal protection materials...
Flying insects can perform a wide array of extreme aerial maneuvers with exquisite accuracy and robustness, outmaneuvering any man-made flying device. As a physical system, a flapping insect is strongly...
The rapidly-exploring random tree (RRT) method was designed for guidance of a robotic vehicle by performing a random sampling search that generates feasible paths while taking into consideration constraints such...
One of the defense methods against ballistic missiles threat is to intercept them at the mid-course phase, which is a part of the ballistic trajectory that lays in space. At...
We explore the physics behind high-throughput devices for the production of monodisperse microdroplets. Microdroplets are used more and more in a wide variety of applications: to conduct chemical reactions in...
Engineering design is a highly complex cognitive process of solving problems by developing new solutions and products. In the past this process was accomplished using intuition and experience, until a...
State estimation in dynamical systems with randomly switching coefficients is an important problem with a variety of applications. The most commonly met problems that are formulated within the random coefficients state-space approach,...
The ramjet engine is an air-breathing engine that operates without the need of moving parts. This type of engine constitutes a simple and efficient way of propulsion. The use of...