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Tests were made of a large-scale tilt-wing deflected-slipstream VTOL airplane with blowingtype BLC trailing-edge flaps. The model was tested with flap deflections of 0 degrees without BLC, 50 degrees with and without BLC, and 80 degrees with BLC for wing-tilt angles of 0, 30, and 50 degrees. Included are results of tests of the model equipped with a leading-edge flap and the results of tests of the model in the presence of a ground plane. (Author).
Comparisons with the results of tests on the same model but having a combination slot suction and blowing boundary-layer-control system (Arado) on the trailing-edge flaps and ailerons indicated considerably lower suction flow requirements for the area-suction flaps.