Method and apparatus for optimizing the aerodynamic effect of an airfoil
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United States of America Patent
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-
Mar 2, 1999
Issued Date -
N/A
app pub date -
Dec 19, 1997
filing date -
Feb 5, 1996
priority date (Note) -
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Abstract
A method and an apparatus are provided for optimizing the aerodynamic effect of the airfoil of an aircraft by defined changes in camber. The method includes the following steps: a. determining the flow for the flight condition caused by the change in camber, b. comparing the ascertained characteristic values with stored nominal reference values for an optimal flow, c. forming differential values between the characteristic values and the stored nominal reference values, d. deriving actuator signals from the differential values, and e. changing the camber by motor, based on the actuator signals, for minimizing the differential values. The optimum wing flow is thereby maintained more exactly. For transonic wings, the position and strength of compression shocks is also effectively controlled, which leads to a reduction of the direct shock induced separation.
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