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A study of internal drag of small-scale ducts at Mach number 4 (1972)

Hunton, L. W. ; Graham, L. A.

In: CASI

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Publication Date: 2019-06-27

Description: An experimental investigation was made to examine the applicability of methods used to determine internal drag of small ducts and to study some of the problems encountered in assessing momentum losses in such ducts. Test Mach numbers ranged from 3.7 to 4.4 at angles of attack of 0 and 5 degrees and at a constant Reynolds number of 4.3 million per foot. The configurations represented small ducts used to simulate external aerodynamics of air breathing propulsion systems and consisted of wing nacelle models of ducts with circular, square, and rectangular inlets and with a two-dimensional inlet.

Keywords: FLUID MECHANICS

Type: NASA-TM-X-62143

Format: application/pdf

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