[Reports] / Amer.inst.of aeronautics and astronautics. N 89-1119 : Interior noise in the untreated Gulfstream II propfan test assessment (PTA) aircraft : Rep. presented at the AIAA 12th aeroacoustics conf.,Apr. 10-12, 1989/San Antonio(Tx) / H.Kuntz,R.Prydz, 1989. - 8 p. - Текст : непосредственный.