[Reports] / Amer.inst.of aeronautics and astronautics. N 90-3261 : expert system for instruction of preliminary aircraft design : Rep.presented at the AIAA/AHS/ASEE aircraft design,systems and operations conf.,Sept.17-19 1990,Dayton,Oh. / Y.Murotsu,C.Park, 1990. - 8 p. . - Текст : непосредственный.