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Record Details

Record 94 of 1759
Design of short haul aircraft for fuel conservation
Author and Affiliation:
Bowden, M. K.
Sweet, H. S.(Lockheed-Georgia Co., Marietta, Ga., United States)
Waters, M. H.(NASA Ames Research Center, Moffett Field, Calif., United States)
Abstract: Current jet fuel prices of twice the 1972 level have significantly changed the characteristics of airplane design for best economy. The results of a contract with the NASA Ames Advanced Concepts and Missions Division confirmed the economic desirability of lower design cruise speeds and higher aspect-ratio wings compared to designs developed in the by-gone era of low fuel price. Evaluation of potential fuel conservation for short-haul aircraft showed that an interaction of airfoil technology and desirable engine characteristics is important: the supercritical airfoil permits higher aspect ratio wings with lower sweep; these, in turn, lower the cruise thrust requirements so that engines with higher bypass ratios are better matched in terms of lapse rate; lower cruise speeds (which are also better for fuel and operating cost economy) push the desired bypass ratio up further. Thus, if fuel prices remain high, or rise further, striking reductions in community noise level can be achieved as a fallout in development of a 1980s airplane and engine. Analyses are presented of developmental trends in the design of short-haul aircraft with lower cruise speeds and higher aspect-ratio wings, and the effects on fuel consumption of design field length, powered lift concepts, and turboprop as well as turbofan propulsion are discussed.
Publication Date: May 01, 1975
Document ID:
19750056430
(Acquired Dec 01, 1995)
Accession Number: 75A40502
Subject Category: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
Report/Patent Number: SAE PAPER 750587
Document Type: Conference Paper
Publisher Information: United States
Meeting Information: Society of Automotive Engineers, Air Transportation Meeting; May 6-8, 1975; Hartford, CT
Meeting Sponsor: Society of Automotive Engineers
Financial Sponsor: NASA; United States
Description: 16p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AIRCRAFT DESIGN; COST EFFECTIVENESS; ENERGY CONSERVATION; FUEL CONSUMPTION; SHORT HAUL AIRCRAFT; AIRCRAFT ENGINES; AIRCRAFT NOISE; AIRFOILS; JET ENGINE FUELS; SHORT TAKEOFF AIRCRAFT
Imprint And Other Notes: Society of Automotive Engineers, Air Transportation Meeting, Hartford, Conn., May 6-8, 1975, 16 p.
Availability Source: Other Sources
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