Investigation of the Suction System and Boundary-Layer Characteristics on a High-Lift, BLC L-19 Test Aircraft
MISSISSIPPI STATE UNIV MISSISSIPPI STATE DEPT OF AEROPHYSICS AND AEROSPACE ENGINEERING
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The report presents the results of a test program which was intended to document the boundary-layer control system characteristics of the high-lift L-19 aircraft. This aircraft incorporates a distributed-suction, turbulent- boundary-layer control system which allows trimmed lift coefficients of 4.8 to be developed. In addition to presenting the description of the suction hole distribution and computed values of the suction velocity distribution, comparisons are made between the measured boundary-layer characteristics and one empirical, turbulent-boundary-layer profile description. The large influence of suction velocity on the wall shear stress is shown through the use of the momentum integral equation.