ESDU 97011

Wing lift coefficient increment at zero angle of attack due to deployment of plain trailing-edge flaps at low speeds.

Summary
Document

Abstract:

ESDU 97011 provides an empirical method for estimating ΔC_L0tw , the increment in lift coefficient at zero angle attack due to the deployment of full-span or part-span plain flaps on wings at low speeds. The increment ΔC_L0tw is derived by using the method of ESDU 94028, but with a modified efficiency factor, to establish the characteristics of a plain flap on an aerofoil section that is representative of the wing. Factors are applied to allow for planform geometry and part-span effects. The method has been found to be accurate to within +/-15% for 98% of the data studied.

Indexed under:

Flaps
Leading-edge High-lift Devices
Lift
Plain Flaps
Wings

Details:

Data Item ESDU 97011
Format:	PDF
Status:	Amendment (A), 01 Nov 2003 Published in Release 2004-01
Previous Releases:	ESDU 97011
ISBN:	978 1 86246 011 9