ESDU 06014
Zero-lift drag coefficient increment due to full-span plain flaps.
Abstract:
ESDU 06014 provides the increment in the zero-lift drag coefficient of a wing due to the deployment of plain trailing-edge flaps. The increment is to be used within the prediction method for the wing total drag coefficient over the range of total lift coefficient where there is a parabolic variation. The anticipated form of the parabolic variation is implicit in the empirical correlation. The modelling and analysis of the drag polar are discussed in detail. The accuracy of the method is assessed as within +/-0.015 on the drag coefficient increment. The traditional allowance for the effect of wing sweep is followed after review. The use of the method is illustrated by a worked example.
A program of the method is provided as ESDUpac A0614 and Toolbox 06014.
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This Data Item is complemented by the following software:
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Toolbox 06014
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ESDUpac A0614 New in this Release
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This program is only available to subscribers. |