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특허 상세정보

System and methods for simultaneous momentum dumping and orbit control

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64G-001/26    B64G-001/10   
미국특허분류(USC) 244/169; 244/158.8
출원번호 US-0141832 (2008-06-18)
등록번호 US-8439312 (2013-05-14)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Yee & Associates, P.C.
인용정보 피인용 횟수 : 4  인용 특허 : 13
초록

The present system and methods enable simultaneous momentum dumping and orbit control of a spacecraft, such as a geostationary satellite. Control equations according to the present system and methods generate accurate station-keeping commands quickly and efficiently, reducing the number of maneuvers needed to maintain station and allowing station-keeping maneuvers to be performed with a single burn. Additional benefits include increased efficiency in propellant usage, and extension of the satellite's lifespan. The present system and methods also enable t...

대표
청구항

1. A method of simultaneous orbit control and momentum dumping in a spacecraft in an orbit, the spacecraft including a plurality of north/south thrusters, the method comprising the steps of: generating a set of firing commands for the north/south thrusters from solutions to inclination control and roll/yaw momentum dumping equations; andfiring the north/south thrusters according to the firing commands so that control of an inclination of the orbit and a roll/yaw momentum dumping are achieved simultaneously using only the north/south thrusters. 2. The met...

이 특허에 인용된 특허 (13)

  1. Goodzeit Neil Evan ; Ratan Santosh. Adaptive harmonic disturbance compensation system. USP1998095806804.
  2. Chan Fred N. (Atherton CA) Reimche Wallace E. (Saratoga CA). Autonomous stationkeeping for three-axis stabilized spacecraft. USP1988084767084.
  3. Keith Reckdahl ; Birgit Sauer. Closed-loop spacecraft orbit control. USP2002086439507.
  4. Anzel Bernard M. ; Ho Yiu-Hung M. ; Noyola Richard A.. Fuel efficient methods for satellite stationkeeping and momentum dumping. USP2000016015116.
  5. Anzel Bernard M.. Method and apparatus for a satellite station keeping. USP1998095810295.
  6. Anzel Bernard M. (El Segundo CA). Method and apparatus for a satellite station keeping. USP1995085443231.
  7. Keitel Keith F. ; Noyola Richard A. ; Yocum ; Jr. John F. ; Abernethy David K. ; Anzel Bernard M.. Momentum unloading using gimbaled thrusters. USP1999115984236.
  8. Salvatore Jeremiah O. (Redondo Beach CA) Murphy John R. (El Segundo CA). Propellant immobilizing system and method. USP1994025284309.
  9. Anzel Bernard M.. Stationkeeping and momentum-dumping thruster systems and methods. USP2000036042058.
  10. Michael F. Barsky ; Thomas M. Tanner ; Loren I. Slafer ; Paul D. Williams ; George B. Semeniuk ; Joseph M. Allard GB. Stationkeeping method utilizing open-loop thruster pulses and closed-loop authority limited momentum storage devices. USP2002016340138.
  11. Ho, Yiu-Hung M.. System and methods for simultaneous momentum dumping and orbit control. USP2011047918420.
  12. Fowell, Richard A.. System for counteracting a disturbance in a spacecraft. USP2005076921049.
  13. Bernard M. Anzel. Thruster systems for spacecraft station changing, station keeping and momentum dumping. USP2002086435457.