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UID:0-338@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20190401T163000

DTEND;TZID=Asia/Jerusalem:20190401T173000

DTSTAMP:20230527T134810Z

URL:https://aerospace.technion.ac.il/events/bounded-circumlunar-spacecraft
 -formations/

SUMMARY:Bounded Circumlunar Spacecraft Formations
DESCRIPTION:Lecturer:Oren Fischman\n Faculty:Department of Aerospace Engine
 ering\n Institute:Technion – Israel Institute of Technology\n Location:C
 lassroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstract
 : \n Details: \n Long-term satellite formation keeping must account for th
 e effects of orbital perturbations. While long-term formation keeping arou
 nd the Earth has been thoroughly studied\, lunar formations are yet to be 
 further explored. In comparison to the Earth\, the Moon introduces a more 
 complex gravitational field\, and requires taking into account additional 
 gravitational perturbations.\nIn this work\, the rates of the differential
  orbital elements of two lunar satellites in formation are expanded up to 
 second order. These rates are then simplified\, assuming the chief satelli
 te is on a frozen lunar reference orbit. Additional assumptions are made t
 o simplify the variational equations further\, while retaining second-orde
 r terms. Numerical simulations are performed to illustrate the feasibility
  of using simplified rates of the differential orbital elements under vari
 ous perturbation mitigation techniques\, for a nominal orbit which deviate
 s from the assumed frozen reference orbit. These simulations are carried o
 ut for a variety of scenarios\, including frozen and near-frozen chief orb
 its\, based on an actual lunar formation flying mission. The analysis vali
 dates the feasibility of using perturbation mitigation techniques for futu
 re lunar formation flying missions.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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