Abstract

Flight tests were conducted with the Ball-Bartoe Jetwing powered lift technology demonstration aircraft to visualize flow angles on the fuselage surface and at selected points in the flowfield near the horizontal tail. Simple data acquisition techniques were used. The results were used to calculate the downwash near the horizontal tail and its variation with airspeed, jet deflection angle, and blowing coefficient over a range of level flight conditions. Further research is needed to broaden the database and substantiate these findings.

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