[Reports] / Amer.inst.of aeronautics and astronautics. N 89-2817 : Development testing of the 578 propfan gear system : Rep. presented at the AIAA/ASME/SAE/ASEE 25th joint propulsion conf.,Monterey(Ca),July 10-12,1989 / N.E.Anderson,D.A.Wagner, 1989. - 6 p. - Текст : непосредственный.