"Angle of attack." . . "High angles." . . "Spinning(motion)" . . "Rates." . . "Reynolds number." . . "Wind tunnel tests." . . "Balances." . . "Supersonic wind tunnels." . . "Rotation." . . "Attitude(inclination)" . . "NATIONAL AERONUATICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER." . . "Recent developments in rotary-balance testing of fighter aircraft configurations at NASA Ames Research Center"@en . . "Recent Developments in Rotary-Balance Testing of Fighter Aircraft Configurations at NASA Ames Research Center"@en . . . . . . . . . . . "NASA-ARC has an ongoing research program to investigate high-angle-of-attack aerodynamic phenomena associated with high-performance aircraft. As part of this research, two rotary-balance apparatuses have recently been developed for testing airplane models in a coning motion. A new large-scale apparatus, developed for use in the 12-Foot Pressure Wind Tunnel primarily to permit testing at high Reynolds numbers, was recently used to investigate the aerodynamics of a 0.05-scale model of the F-15 fighter aircraft. Effects of Reynolds number, spin-rate parameter, model attitude, presence of a nose boom, and model/sting mounting angle were investigated. A smaller apparatus has been used in the 6- by 6-foot supersonic wind tunnel to investigate the aerodynamic behavior of a simple representation of a modern fighter, the Standard Dynamics Model (SDM). Effects of spin-rate parameter and model attitude were investigated. This paper presents a description of the two rigs and a discussion of some of the results obtained in the respective tests."@en . . . . . . . . . . . . . . . . "Test equipment." . . . . "Wind tunnel models." . . "Jet fighters." . .