The Effect of Mobile Transporter Motion on the Space Station Attitude Control System

by Tsay-Hsin G. Hu, Grumman Space Station Integration, Div, Reston, United States,
Jalal Mapar, Grumman Space Station Integration, Div, Reston, United States,
Ben C. Barker, Grumman Space Station Integration, Div, Reston, United States,



Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space IV

Abstract:

The effect of Mobile Transport (MT) motion on Space Station stability and the performance of the Attitude Control System (ACS) using Control Momentum Gyros (CMGs) is assessed. Analysis focuses on Stage-6 (MTC). The joined Orbiter/Station Vehicle is in Gravity Gradient flight orientation. The Space Station has control of the stack and is using CMGs as the primary control. The PDR version of SSF Attitude Control System with gain scheduling is used in analyzing the interaction between the MT translation maneuver and the ACS. Parametric studies are conducted, rather than analysis of a specific operation, to determine the operational envelope. These parameters include (1) MT acceleration/Force, (2) MT payload mass, and (3) peak MT velocity. Envelopes of acceptable payload-mass-MT speed are determined. With reasonable MT peak velocity the MT can finish its maneuver in relatively short time periods with minor interaction with the ACS.

Subject Headings: Control systems | Space stations | Aerospace engineering | System analysis | Parameters (statistics) | Motion (dynamics) | Flight

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