FIELD: aviation.
SUBSTANCE: invention relates to aircraft air intake. Lifting protective device in air intake channel of supersonic stealth aircraft comprises rotary perforated panel (1). Shape of the protective device corresponds to the shape of the input device. Panel (1) is made in the form of a single milled perforated plate, the cells of which have size of 2.5*2.5 mm and inclination of 60° to air channel surface. Perforated panel (1) comprises longitudinal and transverse stiffeners.
EFFECT: increasing the reliability of engine air flow duct protection.
9 cl, 3 dwg
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