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R&D Journal
versión On-line ISSN 2309-8988
versión impresa ISSN 0257-9669
Resumen
EGLINGTON, M. L.. Control of a Leading-Edge Flap using the Nose Pressure Distribution. R&D j. (Matieland, Online) [online]. 1992, vol.8, pp.25-34. ISSN 2309-8988.
The problem of controlling the deflection of a leading-edge flap has been investigated from an aerodynamic point of view. The effect of a leading-edge flap on a symmetrical Joukowski aerofoil (12% thickness-chord ratio) is investigated experimentally through a set of wind-tunnel tests and, to a limited extent, theoretically. This initial study shows that it may be possible to control the deflection of the flap, to prevent separation and optimize the Cl\Cd ratio, using the static pressure difference between symmetrical tappings at equal small surface distances from the leading edge, but on opposite surfaces of the aerofoil. In the process a linear relationship between this pressure difference and the angle of attack is obtained. Thus, a linear relationship between this pressure difference and Cx is also obtained.
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