[Reports] / Amer.inst.of aeronautics and astronautics. N 89-2146 : Mission modelling of helicopter combat effectiveness : Rep. presented at the AIAA/AHS/ASEE aircraft design, systems and operations conf., Seattle(Wa)/July 31 - Aug.2, 1989 / D.Simkins,D.Breyer, 1989. - 9 p. - Текст : непосредственный.