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Vortex Wake Geometry of a Model Tilt Rotor in Forward Flight (2002)

Wadcock, A. J. ; Johnson, W. ; Yamauchi, G. K.

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Publication Date: 2019-07-13

Description: The vortex wake trajectory from one rotor of a 0.25-scale V-22 tiltrotor model was measured for four test conditions in the NASA Ames 40- by 80-Foot Wind Tunnel. Vortex wake images were acquired using a laser light sheet and video camera. Wake trajectories were constructed by extracting vortex positions from the video images. Wake trajectories were also calculated using the comprehensive analysis CAMRAD II. Measured and calculated wake geometries exhibit similar trends when advance ratio is varied at fixed thrust or when thrust is varied at fixed advance ratio.

Keywords: Aerodynamics

Type: Heli Japan 2002, AHS International Meeting on Advanced Rotorcraft Technology and Life Saving Activities; Nov 11, 2002 - Nov 13, 2002; Tochigi; Japan

Format: text

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