Supersonic Skin-Friction Drag with Tangential Wall Slot Fuel Injection and Combustion

摘要: The large viscous drag of hypersonic vehicles is a major obstacle to the successful development for prolonged atmospheric travel at high Mach numbers. On such vehicles, this skin-friction can be similar magnitude that inviscid on body. To improve vehicle’s performance, net thrust propulsion system has enhanced, either by increasing force or reducing vehicle drag. Here, reductions in offer margin improvement level. One methods reduction supersonic skin friction injection low-density gas into boundary layer (film cooling). In recent development, film cooling slot hydrogen was combined with its combustion within layer. Analysis and experiments indicated substantial This paper provides further evidence presenting shock-tunnel data direct measurements circular chamber without pressure gradients are compared theories, influence entropy layers combustor size investigated. Measurements show up 77%.