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Automating an orbiter approach to Space Station Freedom to minimize plume impingementThe Space shuttle orbiter Reaction Control System's (RCS) plume impingement during proximity operations with Space Station Freedom (SSF) is a structural design driver for the SSF solar panels and radiators. A study underway at JSC is investigating whether the use of an automated approach controller could result in the reduction of plume impingement induced loads during orbiter approach to SSF. Ongoing real time person-in-the-loop (PIL) simulations of an orbiter approaching the SSF show that orbiter trajectory control can vary significantly from one pilot to the next. This variation is a cause for concern since current analyses predict that plume impingement loads resulting from PIL orbiter approaches may exceed the solar panel and radiator load limits. The use of an automated approach controller is expected to reduce peak loads by both minimizing orbiter translational jet firings in certain directions and controlling the frequency at which they occur during various phases of the approach.
Document ID
19930013116
Document Type
Conference Paper
Authors
Spehar, Peter T. (Lockheed Engineering and Sciences Co. Houston, TX., United States)
Le, Thomas Quan (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Publication Information
Publication: NASA, Washington, NASA Automated Rendezvous and Capture Review. A Compilation of the Abstracts
Subject Category
ASTRODYNAMICS
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19930013037Analytic PrimaryNASA Automated Rendezvous and Capture Review. A compilation of the abstracts