ON-BOARD DEVICE FOR PROTECTION OF AIRCRAFT ENGINES AGAINST PENETRATION OF DEBRIS Russian patent published in 2003 - IPC

FIELD: aviation; devices for protection of aircraft engines against penetration of debris. SUBSTANCE: proposed on-board device includes movable panel mounted in air intake housing which may perform reciprocating motion in horizontal direction. Said panel is rhomboid in shape at angle over leading edge of γ = 90-100 deg.; it may perform oscillatory motion in horizontal plane of air intake through angle α = 30-60 deg. at oscillation period T = 0.5-0.3 s. Length l_p of panel to lower leading edge of air intake and height B of midsection of air intake are made at ratio = 0.3-2.0 and width b_p of panel and width L of midsection of air intake are made at ratio = 0.9-1.0. EFFECT: reduced probability of suction of debris inside air intake. 2 dwg