Wind-tunnel investigation of a plain aileron and a balanced aileron on a tapered wing with full-span duplex flaps

An lnveatl~tlon was edbron on a tapered wtng aiated of an Inboard MACA SlwARY ~ofaplain aileron and abalanced With fult-a)@n ti@A)x fkpS, whloh Cm-EilOttedfhm ~an OUtbOal"dbEdSXlOSd split flap.me Investigation was m-b in the 7-by lo-foot vlnd tUIEIOõ f theLan@eyMemorial.Aeronautical Laboratory.Ihcrmte of ~~ft coefficient of O.& and 1004 wereobtained frmu the Inboardflap alone and frCQ the dqplex-flap cmibination, respectively.The aileron was as effective wlti flapa fully extended as with flaps retrmted, but a 30-percent reductim of aileron effectivenees aQpeare Unavoidable at Intermediate positim of the outboard flap.If this reductlcm 1s acceptable, We wing a~t tested should be satisfac~.Estlmatqi rates of roll and stick forces for the arrmgammt on a fi~ter airplane are givm.