NACA Memorandum Reports

A pursuit type airplane encountered severe diving moments in\ud high-speed dives which make recovery difficult. For the purpose of\ud investigating these diving moments and finding means for their\ud reduction, a 1/6-scale model of the airplane was tested in the\ud 16-foot high-speed wind tunnel at Ames Aeronautical Laboratory. The\ud test results indicate that up to a Mach number of at least 0.75, the\ud limit of the tests, the dive-recovery difficulties can be alleviated\ud and the longitudinal maneuverability improved by the substitution of\ud a long symmetrical fuselage for the standard fuselage