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SAE AIR1191 Rev A

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Performance of Low Pressure Ratio Ejectors for Engine Nacelle Cooling

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A general method for the preliminary design of a single, straight-sided, low subsonic ejector is presented. The method is based on the information presented in References 1, 2, 3, and 4, and utilizes analytical and empirical data for the sizing of the ejector mixing duct diameter and flow length. The low subsonic restriction applies because compressibility effects were not included in the development of the basic design equations. The equations are restricted to applications where Mach numbers within the ejector primary or secondary flow paths are equal to or less than 0.3.

SDO SAE: SAE International
Document Number AIR1191
Publication Date March 1, 1999
Language en - English
Page Count 47
Revision Level A
Supercedes
Committee
Publish Date Document Id Type View
March 1, 1999 AIR1191A Revision
Nov. 1, 1971 AIR1191 Revision