Spacecraft low frequency residual acceleration

Details Spacecraft low frequency residual acceleration Spacecraft low frequency residual acceleration

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992wadc.iafcru...h&link_type=abstract

IAF, International Astronautical Congress, 43rd, Washington, Aug. 28-Sept. 5, 1992. 9 p.

Physics

Acceleration (Physics), Low Frequencies, Orbit Perturbation, Spacecraft Motion, Gravity Gradient, Satellite Drag, Satellite Rotation, Space Shuttle Orbiters, Tides

Scientific paper

An analytical model is described to calculate the low frequency acceleration of Spacelab missions. The three principal low-frequency perturbations of the Space Shuttle Orbiter are taken into account: atmospheric drag, gravity gradient (tidal effect), and spacecraft rotation. These effects are modeled on the basis of rigid-body dynamics which implies a sufficient margin to the systems fundamental frequency. The calculation of atmospheric drag is based on a dynamic model of the atmosphere which takes into account the diurnal density variation. Gravity gradient and rotational accelerations are calculated from the spacecraft attitude data. The main characteristics of the low-frequency accelerations are discussed on the basis of predicted data for the Spacelab mission D-2.

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