Calculation Procedures for Potential and Viscous Flow Solutions for Engine Inlets

[+] Author and Article Information
J. A. Albers, N. O. Stockman

V/STOL Propulsion Technology Branch, Lewis Research Center, National Aeronautics and Space Administration, Cleveland, Ohio

J. Eng. Power 97(1), 1-8 (Jan 01, 1975) (8 pages) doi:10.1115/1.3445903 History: Received November 13, 1973; Online July 14, 2010


The method and basic elements of computer solutions for both potential flow and viscous flow calculations for engine inlets are described. The procedure is applicable to subsonic conventional (CTOL), short-haul (STOL), and vertical takeoff (VTOL) aircraft engine nacelles operating in a compressible viscous flow. The calculated results compare well with measured surface pressure distributions for a number of model inlets. The paper discusses the uses of the program in both the design and analysis of engine inlets, with several examples given for VTOL lift fans, acoustic splitters, and for STOL engine nacelles. Several test support applications are also given.

Copyright © 1975 by ASME
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