VARIABLE GEOMETRY AIR INTAKE FOR SUPERSONIC PASSENGER AIRCRAFT Russian patent published in 2022 - IPC F02C7/42 B64D33/02 

FIELD: aeronautical engineering.

SUBSTANCE: invention relates to aeronautical engineering and relates to the design of an air intake with variable geometry for a supersonic passenger aircraft (AC). The air intake contains a rotary element installed in the air channel and designed to change the cross-sectional area. The boundary layer drainage system includes a slot located at the entrance to the air channel in front of the throat section on the aircraft surface. A line is connected with the gap to remove the boundary layer. In this case, the width of the air intake and the diameter of the circular section at the outlet of the subsonic diffuser are 1.15-1.25 times higher than its height, the angle of the sharp edge of the shell at the inlet is 2-4.5°, and the sweep angle of the side walls is 30-35°. Wherein the angle between the planes adjoining each other, forming a curved inner surface of the shell, does not exceed 2°. The pivot element is made in the form of a panel located in a window formed at the entrance to the highway. The pivot axis of the panel is aligned with its front edge, and the rear edge of the panel faces the window edge.

EFFECT: increased efficiency of the air intake.

2 cl, 3 dwg