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UID:0-286@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20200909T163000

DTEND;TZID=Asia/Jerusalem:20200909T173000

DTSTAMP:20230525T071004Z

URL:https://aerospace.technion.ac.il/events/fuel-efficient-cross-track-dis
 tance-establishment-in-satellite-formations/

SUMMARY:Fuel-Efficient Cross-Track Distance Establishment in Satellite Form
 ations
DESCRIPTION:Lecturer:Yonatan Amit-Shapira\n Faculty:Department of Aerospace
  Engineering\n Institute:Technion – Israel Institute of Technology\n Loc
 ation:https://technion.zoom.us/j/91675095158\n Zoom: \n Abstract: \n Detai
 ls: \n Satellite formations have numerous applications. However\, the init
 ial establishment of such formations can require a high fuel expenditure\,
  due to cross-track distance requirements. This work proposes a strategy t
 o significantly reduce the fuel required for the formation establishment. 
 Instead of direct out-of-plane maneuvers\, it is suggested to use in-plane
  maneuvers\, while utilizing natural forces\, specifically the J2 perturba
 tion. This methodology extends the establishment duration\, and thus requi
 res re-establishment of the along-track distance. Analytical expressions f
 or the cross-track distance and the establishment duration are derived for
  the case of impulsive thrust\, with and without drag. For many cases\, th
 e expected duration is reasonable\, and the fuel saving is shown to be con
 siderable.\nFor the continuous thrust case\, optimal control methods were 
 used. The proposed strategy is proven to be optimal for an example problem
  with two cases: limited and unlimited thrust magnitude. Finally\, the cas
 es of impulsive and continuous thrust are compared.\nZoom Meeting\n\n&nbsp
 \;
CATEGORIES:Seminars
LOCATION:https://technion.zoom.us/j/91675095158

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