FIELD: aviation; foreign object ingestion protection devices.
SUBSTANCE: proposed device has lower movable panel mounted in air intake body for performing reciprocating motion in horizontal direction. Panel is made from load-bearing U-shaped framework with small panels on its front axle which perform oscillatory downward motion through angle α=20-70 deg. at period of oscillations T= 0.5-4.0 s; length ll.p. and height B of midsection of air intake are selected at ratio ll.p.=ll.p./B=0.3-1.2; width bl.p. of small panels and width L of midsection of air intake are selected at ratio bl.p.=bl.p./L=0.3-0.5. Such construction makes it possible to avoid suction of vortex cord inside air intake together with foreign matter.
EFFECT: enhanced efficiency.
3 dwg
