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Space Shuttle Orbiter auxiliary power unitThe Space Shuttle Orbiter auxiliary power units (APUs) provide hydraulic power for the Orbiter vehicle control surfaces (rudder/speed brake, body flap, and elevon actuation systems), main engine gimbaling during ascent, landing gear deployment and steering and braking during landing. Operation occurs during launch/ascent, in-space exercise, reentry/descent, and landing/rollout. Operational effectiveness of the APU is predicated on reliable, failure-free operation during each flight, mission life (reusability) and serviceability between flights (turnaround). Along with the accumulating flight data base, the status and results of efforts to achieve these long-run objectives is presented.
Document ID
19830044534
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mckenna, R.
(Sundstrand Aviation-Rockford IL, United States)
Wicklund, L.
(Sundstrand Corp. Sundstrand Energy Systems, Rockford, IL, United States)
Baughman, J.
(Rockwell International Corp. Downey, CA, United States)
Weary, D.
((NASA, Johnson Space Center Houston, TX, United States)
Date Acquired
August 11, 2013
Publication Date
July 1, 1982
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
SAE PAPER 820838
Meeting Information
Meeting: Intersociety Conference on Environmental Systems
Location: San Diego, CA
Start Date: July 19, 1982
End Date: July 21, 1982
Sponsors: AIAA, SAE, ASMA, ASME, AIChE
Accession Number
83A25752
Distribution Limits
Public
Copyright
Other

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