[Reports] / Amer.inst.of aeronautics and astronautics. N 90-3941 : Supression of fatique inducing cavity acoustic modes on turbofan engines : Rep.presented at the AIAA 13th aeroacoustics conf.,Oct.22-24,1990,Tallahassee(Fl.) / R.Benner, 1990. - 8 p. - Текст : непосредственный.