[Reports] / Amer.inst.of aeronautics and astronautics. N 89-1059 : Comparison of propeller cruise noise data taken in the NASA Lewis 8- by 6-Foot Wind Tunnel with other tunnel and flight data : Rev.presented at the AIAA 12 aeroacoustocs conf., Apr.10-12, 1989, San Antonio(Tx) / J.H.Dittmar, 1989. - 22 p. - Текст : непосредственный.
[Reports] / Amer.inst.of aeronautics and astronautics. N 90-3932 : effect of swirl recovery vanes on the cruise noise of an advanced propeller : Rep.presented at the AIAA 13th aeroacoustics conf., Oct.22-24,1990, Tallahassee(Fl) / J.H.Dittmar,D.G.Hall, 1990. - 16 p. - Текст : непосредственный.