Low-RCS embedded cabin door mechanism

Abstract

The invention belongs to structure design technologies, and relates to a cabin door receiving-releasing mechanism. A low-RCS embedded cabin door mechanism disclosed by the invention comprises a cabin door and a drive mechanism, wherein the drive mechanism comprises a left slide rail and a right slide rail which are parallel and fixed on a body respectively; a front link rod and a rear link rod sleeve the middle parts of the left slide rail and the right slide rail, and capable of sliding along the slide rails; one end of an action barrel is hinged with the body, and the other end is hinged with the hinged part of a first pull rod and a second pull rod; the other end of the first pull rod is hinged to the middle part of a corker arm; one end of the corker arm is hinged to the body, and the other end of the corker arm is hinged with a third pull rod; the other end of the third pull rod is hinged with a rotary rocker arm through a joint bearing; the rotary rocker arm is hinged with a link rod and capable of rotating around the link rod; the lower end of the rotary rocker arm is hinged with the joint of the cabin door; rear-end joints at the both sides of the cabin door are hinged with the rear link rod respectively. The low-RCS embedded cabin door mechanism disclosed by the invention adopts an embedded receiving-releasing mechanism, and solves the problems of too high RCS, too high flight resistance and the like caused by that a conventional cabin door is exposed to the outer surface of the body while being opened.

Description

technical field [0001] The invention belongs to the structural design technology and relates to a low RCS embedded cabin door mechanism. Background technique [0002] Due to the needs of new aircraft, some equipment should protrude from the surface of the body to obtain a good view, such as photoelectric radar, etc., but at the same time, protruding from the surface of the body will increase the aerodynamic resistance and increase the RCS (radar reflection area), greatly reducing the flight of the aircraft performance. Therefore, the way that many radars, antennas and other equipment protrude from the surface of the body is gradually replaced by the embedded installation method. The radar, antenna and other equipment are fixed inside the airframe, and the hatch can be opened to release the equipment when needed, so as to realize the flight performance of the fighter. But at present, this kind of hatch is usually turned out of the fuselage, similar to the form of the landin...

AI Technical Summary

Problems solved by technology

But at present, this kind of hatch is usually turned out of the fuselage, similar to the form of the landing gear hatch. This form needs to be opened and then turned outwards, and in a certain direction, it will block the radar or antenna signal, affecting its normal work.

At the same time, the retractable mechanism of this kind of hatch takes up a lot of space, which is not conducive to installation.

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