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UID:11@cee.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20210706T123000
DTEND;TZID=Asia/Jerusalem:20210706T133000
DTSTAMP:20210622T104355Z
URL:https://cee.technion.ac.il/en/seminars/a-ship-based-autonomous-helicop
 ter-as-a-sensor-for-atmospheric-turbulence-measurement-and-modelling/
SUMMARY:A Ship-based Autonomous Helicopter as a Sensor for Atmospheric Turb
 ulence Measurement and Modelling [No Categories]
DESCRIPTION:Location: GWRI Auditorium Speaker:  Sergey Nazarov\n   \n The t
 alk will be given in \n Supervisors: Prof. Yehuda Agnon\nCo-supervisor Pro
 f. Em. Per-Olof Gutman\nThe rapid development of civilian UASs poses the p
 roblem of flightsafety. Therefore\, there is an essential demand for devel
 oping methods for UASsthat would be based on previous aviation experience 
 and will be practical onthe one hand\, and on the other hand\, meet the fu
 ll-scale civil aviationstandards. Some such methods have been developed fo
 r model identification\,flight simulation\, and flight control design prop
 oses. However\, gaps arerequiring further research. For instance\, in-flig
 ht encounters with turbulenceare significant obstacles to successful fligh
 t. Consequently\, the primaryobjective of this research is to develop in-f
 light algorithms for turbulenceestimation for aircraft not equipped with d
 irect turbulence measurementsensors. Therefore\, it is proposed to use sta
 ndard UAV sensor kit and controlsignals produced by the flight control sys
 tem as primary data for turbulencecomponents reconstruction. This estimate
  should be represented in theappropriate aviation turbulence intensity met
 ric and can be online downlinkingto the ground station. It can also be sav
 ed on the storage device withcorresponding UAV's position for further turb
 ulence mapping.  The development of such algorithms should bebased on act
 ual flight data for the selected experimental helicopter\, and itshould al
 so be extendable to any small-scale rotary-wing UA. The traditionalfixed-w
 ing approach of turbulence modeling is not always applicable torotary-wing
  aircraft due to different flight regimes and aerodynamic conditions.Furth
 ermore\, the existing turbulence models for full-scale rotorcraft arecompr
 ehensive\, computationally expensive\, and therefore of no practical use f
 orUAV programs. Therefore\, the related objective is to derive from flight
  testdata turbulence and ship-airwakes models\, which can be used for flig
 htsimulation\, hardware-in-the-loop tests\, and stability and performance 
 analysisof small-scale RUAV control systems. Full-scale rotorcraft disturb
 ancerejection requirements focus solely on steady-state response and not t
 akingtransient behavior into account. However\, there are still no quantit
 ativedisturbance rejection requirements for the shipboard environment. The
 refore\, inthis research\, new disturbance rejection specifications could 
 be derived fromcontrol system performance analysis as successful flight co
 ntrol designcriteria under strongly turbulent conditions\, such as landing
  on a ship deck. \n Link to Zoom invitation:
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