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AST - A Fifth Engine For Environmental Consideration
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English
Abstract
No greater contribution seems to exist for improving supersonic transport economics than by improving the state of the art of jet noise suppressors. Exact matching of thrust requirements for supersonic cruise, transonic acceleration, climb, and especially takeoff-climb is complex. The present design becomes an equivalent five-engine configuration, where the extra thrust is required to enable environmental levels of FAR Part 36 to be achieved. The added size is required first to allow for engine throttling during takeoff run to provide reduced exhaust velocity and exhaust gas temperature consistent with suppressor structural limits, and secondly to make up for suppressor losses at takeoff flight speeds. As the engine selection must be closely tied to airplane selection, substantiation of the 2.2-M airplane selection is described.
Authors
Citation
FitzSimmons, R. and Hoover, W., "AST - A Fifth Engine For Environmental Consideration," SAE Technical Paper 730899, 1973, https://doi.org/10.4271/730899.Also In
References
- Gabrielli G. von Karman Th. “What Price Speed?” Thurston Lecture 1950
- NASA Advanced Supersonic Propulsion System Technology Studies GE and P&WA
- Wright C. P. Morden D. B. Simcox C. D. “A Summary of the SST Jet Noise Suppression Test Program.” Federal Aviation Administration February 1972
- Brausch J. F. Doyle V. L. “Summary of GE4/SST Acoustic Suppression Research.” Federal Aviation Administration December 1972
- Loftin L. “The Challenge of the Advanced Supersonic Transport.” NASA Langley, AIAA/IEEE October 1972
- Nichols M. et al “The Second Generation Supersonic Transport.” NASA Langley 1972
- Loftin L. “Towards a Second Generation Supersonic Transport.” NASA Langley, AIAA January 1973