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Past Seminars
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 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...
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...
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...