SUPERSONIC ADJUSTABLE AIR INTAKE SYSTEM FOR STEALTH AIRCRAFT Russian patent published in 2023 - IPC B64D33/02 F02C7/42 

FIELD: aviation.

SUBSTANCE: invention relates to air intakes of aircraft. The replenishment system for a supersonic adjustable air intake of a stealth aircraft contains a frame (1) rectangular in top view, an edging (2), a perforated skin (4), rotary supports (5, 6) and flaps (3). The frame (1) contains two longitudinal and a set of transverse load-bearing elements in the form of T-, I- and Z-shaped beams. The edging (2) is attached to the lower sides of the transverse power elements with its upper side. The perforated lining (4) is fixed along the perimeter on the lower side of the edging and in the central part on the transverse load-bearing elements. In the longitudinal load-bearing elements (1b) of the frame (1) there are holes in which the rotary flaps (3) are installed with their end sides using rotary supports (5, 6). The rotation axis of the rotary flap (3) is shifted relative to the centre of the end surface of the rotary flap (3). Rotary flaps (3) are rectangular milled panels with a flat surface on the side facing the air intake duct and a ribbed surface on the reverse side.

EFFECT: reduction in radar signature, protection from foreign objects entering the air intake and high efficiency of the gas-dynamic operation of the air intake replenishment system.

5 cl, 9 dwg