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Future long-range transports: Prospects for improved fuel efficiencyA status report is provided on current thinking concerning potential improvements in fuel efficiency and possible alternate fuels. Topics reviewed are: (1) historical trends in airplane efficiency; (2) technological opportunities including supercritical aerodynamics, (3) vortex diffusers, (4) composite materials, (5) propulsion systems, (6) active controls, and terminal-area operations; (7) unconventional design concepts, and (8) hydrogen-fueled airplane.
Document ID
19750009267
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Nagel, A. L. (NASA Langley Research Center Hampton, VA, United States)
Alford, W. J., Jr. (NASA Langley Research Center Hampton, VA, United States)
Dugan, J. F., Jr. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
February 1, 1975
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
NASA-TM-X-72659
Report Number: NASA-TM-X-72659
Accession Number
75N17339
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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