A review of the effects that onboard liquid may have on the dynamics of the spacecraft is given. A distinction is made between arbitrarily moving craft and spin stabilized vehicles. The modeling of rotating liquid behavior is very complicated and generally allows only predictions on the stability behavior of a spinning spacecraft. A flight experiment with a model satellite with liquid in an annular tank, during parabolic aircraft flight is described. From a filmed record of the unconstrained motion, the attitude of the satellite is reconstructed. Details of the image processsing scheme are given. The numerical simulation of the motion of the model satellite is explained. The liquid is inviscid and is assumed to move in the tank in two directions only, i.e., radial motion, is neglected. Surface tension effects are important and are fully accounted for. The angular rates of the model following a short duration torque, are presented. Plots of the liquid motion are included.
Effects of Low Bond Number Liquid Motions on Spacecraft Attitude
1989
18 pages
Report
Keine Angabe
Englisch
Astronautics , Unmanned Spacecraft , Manned Spacecraft , Liquid filled shells , Liquid sloshing , Spin stabilization , Satellite attitude control , Annular flow , Computerized simulation , Cylindrical tanks , Dynamic models , Liquid surfaces , Parabolic flight , Reduced gravity , Foreign technology , Satellite attitude
Simulation of attitude motions of spacecraft
Tema Archiv | 1976
|Low gravity liquid motions in spacecraft
NTRS | 1987
|