DEVICE FOR PROTECTION OF FLYING VEHICLE ENGINES AGAINST FOREIGN MATTER Russian patent published in 2003 - IPC

FIELD: aviation; devices for protection of flying vehicle engines against penetration of foreign matter. SUBSTANCE: proposed device has movable triangular lower panel mounted in air intake body. Movable panel performs reciprocating motion in horizontal direction and horizontal oscillatory motion perpendicularly relative to air intake at distance of d = (1.0-1.2) at oscillation period T = 0.5 to 4.0 s; movable panel is located at distance c = 0.005 to 0.01 m from its leading edge. Length l_low of panel and height B of midsection of air intake are made at the following relationship: = 0.05 to 1.2. Width b_low of panel and width L of midsection of air intake are made at the following relationship: = 0.8 to 0.9. EFFECT: reduced probability of sucking vortex core inside air intake together with foreign matter. 3 dwg