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Large-Scale Advanced Prop-Fan (LAP)In recent years, considerable attention has been directed toward improving aircraft fuel efficiency. Analytical studies and research with wind tunnel models have demonstrated that the high inherent efficiency of low speed turboprop propulsion systems may now be extended to the Mach .8 flight regime of today's commercial airliners. This can be accomplished with a propeller, employing a large number of thin highly swept blades. The term Prop-Fan has been coined to describe such a propulsion system. In 1983 the NASA-Lewis Research Center contracted with Hamilton Standard to design, build and test a near full scale Prop-Fan, designated the Large Scale Advanced Prop-Fan (LAP). This report provides a detailed description of the LAP program. The assumptions and analytical procedures used in the design of Prop-Fan system components are discussed in detail. The manufacturing techniques used in the fabrication of the Prop-Fan are presented. Each of the tests run during the course of the program are also discussed and the major conclusions derived from them stated.
Document ID
19880010922
Document Type
Contractor Report (CR)
Authors
Degeorge, C. L. (Hamilton Standard Windsor Locks, CT, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1988
Subject Category
AIRCRAFT PROPULSION AND POWER
Report/Patent Number
NAS 1.26:182112
NASA-CR-182112
Funding Number(s)
CONTRACT_GRANT: NAS3-23051
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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