VARIOUS MJDIFICATIONS TO A SWEPT-WING FIGHTER-TYPE AIRPLANE KIDEL

An investigation w a s made at high subsonic speeds of a model of a twin-engine swept-wing f ighter-type airplane. several different ta i l configurations and with several wing and engine i n l e t modifications. The investigation w a s concerned primarily with longitudinal s t a b i l i t y at a s tab i l izer incidence of Oo; however, a few s t ab i l i ze r and lateral-derivative t e s t s a l so were made. The model w a s tes ted i n the Langley high-speed 7- by 10-foot tunnel a t Mach numbers from 0.60 t o 0.92. The model w a s t es ted with The resu l t s showed t h a t a horizontal t a i l ra ised t o the top of the ve r t i ca l t a i l and moved forward fromthe or iginal posit ion gave substan