The adiabatic shock produced by a compact object moving supersonically relative to a gas with uniform entropy and no vorticity is a source of entropy gradients and vorticity. We investigate these analytically. The non–axisymmetric Rayleigh–Taylor and axisymmetric Kelvin–Helmholtz linear instabilities are potential sources of destabilization of the subsonic accretion flow after the shock. A loca...

fleeter, S., "Fluctuating Lift and Moment Coefficients for Cascade Airfoils in a Nonuniform Compressible Flow," Journal of Aircraft, Vol. 10, No. 2, Feb. 1973, pp. 93-98. Kaji, S. and Okazaki, T., "Propagation of Sound Waves through a Blade Row, II. Analysis Based on the Acceleration Potential Method," Journal of Sound and Vibration, Vol. 11, No. 3, March 1970, pp. 355-375. 3 Bland, S. R., "The...

This paper describes a computational study undertaken to determine the aerodynamic effect of tiny unsteady synthetic jets as a means to provide the control authority needed to maneuver a spinning projectile at low subsonic speeds. Advanced Navier-Stokes computational techniques have been developed and used to obtain numerical solutions for the unsteady jet-interaction flow field at subsonic spe...

The adiabatic shock produced by a compact object moving supersonically relative to a gas with uniform entropy and no vorticity is a source of entropy gradients and vorticity. We investigate these analytically. The non–axisymmetric Rayleigh– Taylor and axisymmetric Kelvin–Helmholtz linear instabilities are potential sources of destabilization of the subsonic accretion flow after the shock. A loc...