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Tests of Several Model Nacelle-Propeller Arrangements in Front of a WingAn investigation was conducted in the N.A.C.A. 20-foot wind tunnel to determine the drag, the propulsive and net efficiencies, and the cooling characteristics of severa1 scale-model arrangements of air-cooled radial-engine nacelles and present-day propellers in front of an 18- percent-thick, 5- by 15-foot airfoil. This report deals with an investigation of wing-nacelle arrangements simulating the geometric proportions of airplanes in the 40,000- to 70,000- pound weight classification and having the nacelles located in the vicinity of the optimum location determined from the earlier tests.
Document ID
20090014140
Acquisition Source
Headquarters
Document Type
Other
Authors
McHugh, James G. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 7, 2013
Publication Date
September 1, 1939
Subject Category
Aerodynamics
Report/Patent Number
NACA-SR-123
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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