| 摘要 |
equipment of aerodromes. SUBSTANCE: artificial pavement having concave section with concavity towards center at difference in height exceeding 10 m; runway is equipped with radio and illuminating fixtures. Concave section consists of descending and ascending length between which point is marked at which speed required for takeoff of flying vehicle shall be attained. EFFECT: enhanced safety of flight. 3 cl, 2 dwg |
