[Reports] / Amer.inst.of aeronautics and astronautics. N 90-0366 : Supersonic jet noise reduction by a pourous single expansion ramp nozzle : Rep.presented at the AIAA 28th aerospace sciences meet.Jan.8-11,1990/Reno(Nv) / K.J.Yamamoto,M.J.Donelson,R.W.Wlezien, 1990. - 9 p. - Текст : непосредственный.