A Summary of X-15 Heat-Transfer and Skin-Friction Measurements

Banner, Richard D. and Kuhl, Albert E. (1966) A Summary of X-15 Heat-Transfer and Skin-Friction Measurements. Technical Report NASA TM X-1210, Research Engineering, NASA Dryden Flight Research Center.

Full text available as: PDF - Requires Adobe Acrobat Reader or other PDF viewer.

Abstract

Measured local Mach numbers and heat transfer obtained on the lower surface of the X-15 wing and bottom centerline of the fuselage at angles of attack up to 18 degrees and on the vertical fin with both a sharp and a blunt leading edge are summarized and compared with calculations using Eckert's reference-temperature method. Direct measurements of skin friction on the surface of the sharp-leading-edge vertical fin are also presented. It is shown that both the heat-transfer and skin-friction data can be predicted by neglecting the effect of wall temperature in the calculation of the reference temperature by Eckert's method. Uncertainties in level and trend of Reynolds analogy factor with Mach number are discussed, and a planned flight investigation is described.

EPrint Type:	NASA Technical Memorandum
Keywords:	Angle of attack, Heat transfer, Mach number, Skin friction, X-15 aircraft
Subjects:	(01 - 09) Aeronautics: (05) Aircraft Design, Testing And Performance Aircraft/Project: X-15
ID Code:	846
Deposited On:	17 April 2006
Additional Information:	14 pages.