Analytical and numerical assessments of the indirect noise generated through a nozzle are presented. The configuration corresponds to an experiment achieved at DLR by Bake et al. [F. Bake, C. Richter, B. Mühlbauer, N. Kings, I. Röhle, F. Thiele, B. Noll, The Entropy Wave Generator (EWG): A reference case on entropy noise, Journal of Sound and Vibration 326 (2009) 574-598] where an entropy wave ...

A hypervelocity imperfect gas nozzle with a shared wave-elimination contour is designed by the residual correction method, allowing test Mach number to be varied changing throat contours. Owing effects, classical method of characteristics boundary layer does not produce uniform flow field, resulting in significant deviation from target number. In this work, computational fluid dynamics solver u...

The airframe-integrated linear-spike nozzle concept applied to an external nozzle for high-speed aircraft was evaluated with regard to the thrust augmentation capability and the trim balance. The main focus was on the vehicle aftbody. The baseline airframe geometry was first premised to be a hypersonic waverider design. The baseline aftbody case had an external nozzle comprised of a simple dive...