The orbit profile for the Atmosphere Explorer requires a velocity adjust capability of 2000 ft/sec/sec and individual maneuvers of up to 24 ft/sec in magnitude. This requirement is met by a monopropellant hydrazine propulsion subsystem which also provides, by virtue of the tank arrangement, a means of adjusting the spacecraft center of mass in orbit, thereby minimizing external disturbance torques. The attitude control subsystem is of the momentum bias type. A large internal flywheel furnishes gyroscopic stiffness and permits rapid changes in operating mode (despun to spinning mode) by controlled interchange of momentum between the flywheel and the spacecraft main body.
Multimode attitude and orbit control for the Atmosphere Explorer spacecraft
American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting ; 1975 ; Pasadena, CA
1975-01-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
The Atmosphere Explorer spacecraft system
AIAA | 1975
|The Atmosphere Explorer spacecraft system.
NTRS | 1973
|The Atmosphere Explorer spacecraft system
NTRS | 1975
|The Atmosphere Explorer spacecraft System
Tema Archiv | 1973
|