[Reports] / Amer.inst.of aeronautics and astronautics. N 89-1056 : Installed propfan (SR-7L) farfield noise characteristics : Rep. presented at the AIAA 12th aeroacoustics conf.,Apr. 10-12,1989, San Antonio(Tx) / N.N.Reddy,H.WBartel,M.Salikuddin, 1989. - 6 p. - Текст : непосредственный.
[Reports] / Amer.inst.of aeronautics and astronautics. N 89-1057 : Lateral noise attenuation of the advanced propeller of the propfan test assessment aircraft : Rep. presented at the AIAA 12th aeroacoustics conf.,Apr. 10-12,1989, San Antonio(Tx) / F.W.Chambers,N.N.Reddy,H.W.Bartel, 1989. - 8 p. - Текст : непосредственный.