1975-02-01

Wind Tunnel and Flight Development of Spoilers for General Aviation Aircraft 750523

Wind tunnel tests have been carried out to develop a spoiler lateral control system for use with the GA(W)-1 airfoil with a 30% Fowler flap. Tests show that unfavorable aerodynamic interactions can occur between spoiler and flap for large flap deflections. Providing venting of lower surface air through the spoiler opening substantially improves performance. Results of tests with a number of spoiler and cavity shapes are presented and discussed.Applications of two-dimensional wind tunnel results to the design of satisfactory manual lateral control systems are discussed.

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