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Published online by Cambridge University Press: 28 July 2016
This note describes an investigation of experimental and theoretical data on the lift increment due to the deflection of full and part span controls. For full span controls, existing Data Sheets in the Royal Aeronautical Society Aerodynamics series are found to be inadequate for some of the plan forms currently in use, but the investigation shows that with one additional set of curves the sheets may be applied to almost any plan form. For part span conversion factors, a revision also is proposed.