A Wind-tunnel Investigation of the Wake Near the Trailing Edge of a Deflected Externally Blown Flap |
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150 TOTAL VELOCITY 20 PROBE 28 Inboard engine 30 DOWNWASH 45 PROBE ELEVATION 50 DOWNWASH ANGLE anemometer angle of attack C₁ coefficient of 3.90 CT CT CT TOTAL VELOCITY deflected externally blown DEGREES 20 DEGREES DOWNWASH ANGLE DEGREES O 20 DEGREES O 9 DEGREES TOTAL VELOCITY engine thrust Experimental jet-deflection angle externally blown flap flap system flap trailing edge free-stream velocity I/SEC IVSEC jet thickness jet-flap theory Kardas lbf/ft2 lift coefficient M/BEC M/SEC 200 TOTAL m/sec ft/sec obtained Outboard engine Power OFF Power power-off power-on PROBE ELEVATION ANGLE PVSEC results for n results for ʼn Reynolds number static thrust static-force Streamwise velocity profile streamwise velocity vector thrust coefficient TOTAL VELOCITY 50 TOTAL VELOCITY DOWNWASH TOTAL VELOCITY M/SEC traverse assembly turning angle U.S. Customary Units VELOCITY DOWNWASH ANGLE VELOCITY M/SEC 200 W/SEC Wake survey results WBEC wing reference chord Δδ Ст чо પડ