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Comparative Evaluation of Flight Control Power Distribution Systems for Hypersonic Aircraft
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English
Abstract
Hypersonic aircraft represent a radical departure from contemporary air vehicles in terms of system performance requirements and operating envirnoment. Flight control components may encounter environmental temperatures as high as 1600 F during high Mach number cruise.
A basic re-evaluation of auxiliary power distribution techniques has been made to determine the type of system most suitable for use under these conditions. Five types were considered:
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1.
Cooled hydraulic system.
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2.
Liquid metal system.
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3.
Pneumatic system.
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4.
Pulsating flow hydraulic system (using conventional fluid in the moderate temperature, and liquid metal in the higher temperature portions of the vehicle).
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5.
Mechanical system.
These systems have been evaluated for use in a high Mach number cruise aircraft on the basis of weight, power requirements, and cooling requirements. As a result of this study, a cooled hydraulic system appears to be the most desirable choice for a first generation hypersonic cruise aircraft.
Authors
Citation
Caplan, M., Thayer, W., and Reams, J., "Comparative Evaluation of Flight Control Power Distribution Systems for Hypersonic Aircraft," SAE Technical Paper 670530, 1967, https://doi.org/10.4271/670530.Also In
References
- Thayer W. W. “Hypersonic Aircraft Auxiliary Power Subsystem Analysis, Vol. I, Subsystem Selection.” January 1967
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- Blackmer B. H. “Research on Liquid Metals as Power Transmission Fluids.” WADC-TR-57-294 1958
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- Kumpitsch R. C Grannan J. R. Kroon P.J. “Study of Liquid Metal NaK-77 for Application in Flight Control Systems, Vol. Ill, Investigation of System Applications and Components.” Ill 1964
- Caplan M. L. “Emergency Hydraulic Power Generation by Means of Solid Propellants.” 1963
- Pollard F. H. Cannizzaro S. “Investigation of Pulsating Flow Hydraulic Concepts.” AFAPL-TR-65-83 November 1965
- Pollard F. H. “Research Investigation of Hydraulic Pulsation Concepts.” APL-TDR-64-109 October 1964
- “Mechanical Actuation Systems for Advances Vehicles.” Curtiss-Wright Corp. Report C-2896 1963