[Reports] / Amer.inst.of aeronautics and astronautics. N 90-1963 : Ultrasonic regression rate measurement in solid fuel ramjets : Rep. presented at the AIAA/SAE/ASME/ASEE 26th joint propulsion conf. July 16-18, 1990/Orlando(Fl) / F.Dijkstra,P.Korting,R.van der Berg, 1990. - 9 p. - Текст : непосредственный.