Wind-tunnel investigation of an NACA 23012 airfoil with two sizes of balanced split flap

NACA WART~REPORTS are reprints of papers originally issued to provide rapid distkbution of advance research results to an authorized group requiring them for the war effort.They were previously held under a security status but are now unclassified.Some of these reports were not technically edited.All have been reproduced without change in order to expedite general distribution. L -"441,..