Experimental Investigation of Temperature Recovery Factors on Bodies of Revolution at Supersonic Speeds
Experimental Investigation of Temperature Recovery Factors on Bodies of Revolution at Supersonic Speeds

Author: William R. Wimbrow

Publisher:

Published: 1949

Total Pages: 26

ISBN-13:

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Local temperature recovery factors have been measured on two bodies of revolution at Mach numbers of 2.0 and are shown to be independent of Mach number, Reynolds number, or body shape. The measured recovery factor is well represented by the square root of Prandtl number for laminar boundary layers and by the cube root of Prandtl number for turbulent boundary layers, as predicted by theory.

Experimental Investigation of Flutter of a Propeller with Clark Y Section Operating at Zero Forward Velocity at Positive and Negative Blade-angle Settings
Experimental Investigation of Flutter of a Propeller with Clark Y Section Operating at Zero Forward Velocity at Positive and Negative Blade-angle Settings

Author: John E. Baker

Publisher:

Published: 1949

Total Pages: 686

ISBN-13:

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The highest flutter speeds were found in the vicinity of the angle of zero aerodynamic moment and the flutter speed increased considerably in this region with decreasing pressure. Over the rest of the pitch range, the flutter speeds were much lower and varied little with pressure.