|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B64G-001/26 B64G-001/24 F03H-001/00|
|미국특허분류(USC)||364/459 ; 364/434 ; 244/321 ; 244/164|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 45 인용 특허 : 0|
A spacecraft (201) maintains its north-south positioning by using one of two pairs of single-gimballed throttled thrusters (221-224) on a face of the spacecraft (201). The throttles (118) and gimbals (116) of the thrusters (221-224) are controlled to produce torques on the spacecraft (201) that will maintain a desired attitude for the spacecraft (201) while simultaneously desaturating the momentum stabilizing wheels ( 120, 121 ) of the spacecraft (201).
A wholly-autonomous closed-loop method of simultaneously moving a three-axis stabilized spacecraft having thruster means to attain a desired attitude during north/south maneuvers, said method comprising the steps of: sensing a current spacecraft attitude; determining a first set of forces necessary to produce said desired attitude given said sensed current spacecraft attitude; gimballing said thruster means; and throttling said thruster means by adjusting power applied therto, said steps of gimballing and throttling causing said thruster means to produce...