DEVICE FOR PROTECTION OF FLYING VEHICLES AGAINST FOREIGN OBJECT INGESTION Russian patent published in 2004 - IPC

FIELD: aviation; devices for protection of aircraft engines against foreign object ingestion.

SUBSTANCE: proposed device includes movable lower panel mounted in air intake body. Panel may perform translational motion in horizontal direction; it is made from U-shaped load-bearing framework with panels located on its front and intermediate axles; panels have sizes k₁=(ll.p.

/2)-s; these panels may perform oscillatory downward motion through angle α=20-70 deg at oscillation period of T= 0.5-4.0 s; distance "d" between panels is equal to 1-5% of length of length of lower panel 1_l.p.; panel length 1_l.p. and height "B" of midsection of air intake are at the following ratio: panel width b_l.p. and width "L" of midsection of air intake is selected at ratio

EFFECT: reduction of probability of suction of vortex core together with foreign matter; rational weight parameters of lower panel.

3 dwg