FIELD: aviation; devices for protection against foreign object ingestion. SUBSTANCE: proposed device includes movable panel mounted in air intake body for performing reciprocating motion in horizontal direction. Said panel is triangular in form and consists of two small panels which may be extended through distance c= 0.005-0.01 m from leading edge of air intake performing reciprocating motion perpendicularly to air intake through distance d= (1.1-2.0)L at period of T=1.0-3.0 s. Length lpan of small panels and height B of midsection of air intake relate as 
=0.3-2.0. Width bpan of small panels and width L of midsection of air intake relate as 
. EFFECT: reduced probability of suction of vortex core inside air intake together with foreign matter. 2 dwg
