FIELD: aircraft takeoff spring boards. SUBSTANCE: longitudinal profile of spring board is set by several ordinates of curve ensuring the required vertical velocity at its take-off run. According to invention, profile is made in form of piecewise linear dependence of height of spring board versus its length; points of break of this curve lie in starting curve. EFFECT: enhanced efficiency. 7 dwg
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Authors
Dates
1997-11-27—Published
1996-04-15—Filed