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An investigation of the flow field behind a single rotor and a tandem rotor has been conducted in the Langley full-scale tunnel at a tip-speed ration of 0.15. A chart of the flow angles and dynamic...
An investigation of the flow field behind a single rotor and a tandem rotor has been conducted in the Langley full-scale tunnel at a tip-speed ration of 0.15. A chart of the flow angles and dynamic-pressure contours behind the single rotor is presented. Measurements of the vertical induced velocity around the single rotor are presented and compared with those of theory. The induced velocity in the plane of the single rotor, as obtained by fairing and survey data, and the downwash angles near the tandem rotor are also compared with those of theory.