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UID:0-271@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20210106T163000

DTEND;TZID=Asia/Jerusalem:20210106T173000

DTSTAMP:20230525T064427Z

URL:https://aerospace.technion.ac.il/events/finding-the-worst-case-behavio
 r-of-an-accelerating-rocket-due-to-side-wind-disturbances/

SUMMARY:Finding the Worst-Case Behavior of an Accelerating Rocket due to Si
 de-Wind Disturbances
DESCRIPTION:Lecturer:Mor Friedler\n Faculty:Aerospace engineering\n Institu
 te:Technion – Israel Institute of Technology\n Location:https://technion
 .zoom.us/j/97200263778\n Zoom: \n Abstract: \n Details: \n 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 a
 nd variables in question. This method is time and resources wasteful\, and
  not free of errors. A different approach\, that has already been proven e
 ffective\, is to use optimization tools. Instead of proving the system can
  endure every condition\, the search can be narrowed to find only the crit
 ical conditions and determine a boundary of safety.\nWhen it comes to rock
 ets\, there are various factors in the acceleration phase that affect its 
 trajectory. A very important factor is side-winds that cause angles-of-sid
 eslip that affect the rocket's motion during the acceleration phase\, and 
 eventually the whole trajectory by shifting the ballistic plane.\nThe chos
 en optimization method for solving this problem is Neustadt's. This is a 
 simple method for finding the minimal effort required to bring a linear sy
 stem from the initial condition to its ending condition with minimum contr
 ol effort. This mathematical method was chosen since it yields a simple an
 alytical solution as compare with other methods.\nThe critical side-wind 
 was found using a simplified model of an accelerating rocket and tested on
  the full model. Since ballistic motion is always forward\, it is a common
  analytical practice to express some of the equations using downrange dist
 ance instead of time as the independent variable. This way\, some expressi
 ons become simpler and calculations are easier.\nA sensitivity study will 
 be presented\, showing the critical side-wind that was found is indeed the
  critical boundary for a safe launch. Furthermore\, it is shown that an ae
 rodynamic controller can help widen the boundaries.\nZoom meeting
CATEGORIES:Seminars
LOCATION:https://technion.zoom.us/j/97200263778

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