This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Space Shuttle Orbiter Auxiliary Power Unit Flight Performance
Annotation ability available
Sector:
Language:
English
Abstract
The 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, re-entry/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). The flight data from the Orbiter Flight Tests (STS-1 through-4) is presented along with improvements to ensure that these long-run objectives are achieved.
Authors
Citation
McKenna, R., Wicklund, L., Baughman, J., and Weary, D., "Space Shuttle Orbiter Auxiliary Power Unit Flight Performance," SAE Technical Paper 821513, 1982, https://doi.org/10.4271/821513.Also In
References
- Space Shuttle Orbiter Auxiliary Power Unit Configuration and Performance Reck M.W. Sundstrand Corp. Baughman J.R.
- APU Gearbox Test Tuthill W.C. Thermochemical Test Area, Propulsion and Power Division NASA-JSC, Houston Texas
- McKenna R. Wicklund L. Baughman J.