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Aerodynamic interactions between a 1/6 scale helicopter rotor and a body of revolution (1982)

Shinoda, P. ; Betzina, M. D.

In: CASI

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Publication Date: 2019-06-28

Description: A wind-tunnel investigation was conducted in which independent, steady state aerodynamic forces and moments were measured on a 2.24-m-diam, two bladed helicopter rotor and a body of revolution. The objective was to determine the interaction of the body on the rotor performance and the effect of the rotor on the body aerodynamics for variations in velocity, thrust, tip-path-plane angle of attack, body angle of attack, rotor/body position, and body nose geometry. Results show that a body of revolution near the rotor can produce significant favorable or unfavorable effects on rotor performance, depending on the operating condition. Body longitudinal aerodynamic characteristics are significantly modified by the presence of an operating rotor and hub.

Keywords: AERODYNAMICS

Type: NASA-TM-84247 , A-8940 , NAS 1.15:84247

Format: application/pdf

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