[Reports] / Amer.inst.of aeronautics and astronautics. N 90-4014 : Noise characteristics of the powered lift STOL aircraft : Rep.presented at AIAA 13th aeroacoustics conf.,Oct.22-24,1990,Tallahassee,Fl / M.Maita,K.Takeda,K.Ohsumi,M.Saito, 1990. - 10 p. - Текст : непосредственный.