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NASA NTRS · 19930093890

Lift on a bent, flat plate

Keune, Friedrich
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Abstract

The lift on a bent, flat plate is calculated exactly by the use of conformal mapping. Results are presented in terms permitting direct determination of the angle of zero lift, the lift coefficient, and the lift-curve slope for any flap-chord ratio, flap-deflection angle, and angle of attack.

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WING FLAPS - DEFLECTIONCONFORMAL MAPPING FUNCTIONFINS & RUDDERSLIFT - PLATES, FLATFLAPS, PLAIN - WING SECTIONSWING FLAPS, HINGEDWING-SECTION THEORY

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BibTeXRIS

Keune, Friedrich. 1955-02-01. Lift on a bent, flat plate. https://ntrs.nasa.gov/citations/19930093890

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Determination of the Stability and Control Characteristics of a Tailless All-Wing Airplane Model with Sweepback in the Langley Free-Flight Tunnel

Force and flight tests were performance on an all-wing model with windmilling propellers. Tests were conducted with deflected and retracted flaps, with and without auxiliary vertical tail surfaces, and with different centers of gravity and trim coefficients. Results indicate serious reduction of stick-fixed longitudinal stability because of wing-tip stalling at high lift coefficient. Directional stability without vertical tail is undesirably low. Low effective dihedral should be maintained. Elevator and rudder control system is satisfactory.

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