TAIL BOOM OF AN AIRCRAFT AS THE CONSTRUCTION BASIS OF ITS TAIL END Russian patent published in 2023 - IPC B64C1/26 B64C5/02 

FIELD: aircraft engineering.

SUBSTANCE: relates to the tail boom of a military aircraft. The tail boom is a closed-section caisson formed by a side engine nacelle wall, upper and lower panels, combined into a monolithic welded structure in the form of a box, and contains at least eight frames 1-8 located in the direction of flight and spaced along the length of the tail boom, hinge fixings of horizontal tail, vertical tail, detachable part of the wing, power plant. In this case, the mounting unit for the horizontal tail is made in the form of eyelets located on frame 1, the hinge fixing for the vertical tail is located between frames 3 and 4 and includes the upper and lower supports on which the keel axle shaft is mounted, the mounting unit for the detachable part of the wing is frames 5-7, the power unit hinge fixing is located on the engine nacelle wall of the tail boom caisson and is mounted on the vertical beam of frame 7.

EFFECT: providing high strength and rigidity of the tail boom, combining in one unit the maximum possible number of joint assemblies with other units, which makes it possible to reduce the weight of the aircraft, ensures ease of use during aircraft assembly and manufacturability.

1 cl, 1 dwg