A well-defined reference set of data for CFD and comprehensive code validation for a scaled helicopter main rotor with boundary layer transition in forward flight is presented (Fig. 1). The boundary layer transition was measured using differential infrared thermography (DIT) on the top (suction) side of the three-bladed NASA/Army “PSP rotor”, in the NASA Langley 14- by 22-Foot Subsonic Tunnel at an advance ratio of 0.3 (115kt).
Boundary layer transition measured by DIT on the PSP rotor in forward flight
Vertical Flight Society Annual Forum ; 2021 ; West Palm Beach, FL, US
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Englisch
HELICOPTER ROTOR BOUNDARY LAYER TRANSITION MEASUREMENT IN FORWARD FLIGHT USING AN INFRARED CAMERA
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