A motor-driven aircraft hardpoint sealing mechanism

Abstract

The invention discloses a motor-driven aircraft hardpoint sealing mechanism, which comprises a casing (1), on which hanger holes (12) are opened, and outer bottom surfaces of the casing (1) are respectively installed with A sealing plate (9) that can rotate with it, the sealing plate (9) is located on both sides of the hanger hole (12), and a stepping motor that drives the sealing plate (9) to rotate is installed on the inner surface of the housing (1) (2) and the through-beam infrared sensors (4) positioned on both sides of the hanger hole (12). The invention is simple in structure and easy to use. When the hanger is installed, the ground personnel will open the sealing plate through a switch, and then the sealing plate will remain in the open state. It is necessary to reserve space for the sealing plate inside the shell. The plane size of the sealing mechanism and the corresponding skin opening are small, only slightly larger than the size of the pylon, which has little impact on the structural strength of the aircraft.

Description

technical field [0001] The invention relates to the field of aircraft structure design, in particular to a motor-driven aircraft external storage point sealing mechanism. Background technique [0002] In order to increase the range and ammunition load of modern stealth aircraft, and increase the flexibility of carrying ammunition and combat missions, it is necessary to use external hardpoints under the wings or fuselage to carry various ammunition, pods, and auxiliary fuel tanks. In the process of performing combat missions, in order to ensure maneuverability and stealth performance, before entering the theater, the auxiliary fuel tank needs to be thrown away together with the pylon. In addition, after the aircraft has launched the external ammunition, it is also necessary to throw away the pylon to reduce the radar reflection area of ​​the aircraft and restore a clean aerodynamic shape. In order to install the pylon, an opening is left in the skin at the external hardpoint...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that after the pylon is thrown away, there is no flap to seal the opening in the skin at the hardpoint, which is detrimental to the aerodynamic and stealth performance of the aircraft

Invention patent 201410279843.X introduces a spring-driven sealing mechanism, which has three main disadvantages: (1) This solution relies on the dead point of the four-bar mechanism to realize automatic closing, but the opening position is too close to the dead point, It is easy to cause the fault that the sealing plate cannot be closed; (2) After the sealing mechanism is opened, the two sealing plates are respectively stored in the casing on both sides, so it is necessary to reserve enough space in the casing, resulting in a large plane area of ​​the entire sealing mechanism , it is necessary to reserve a large opening on the skin, and the skin is an important force transmission structure of the aircraft, and a large opening will have an adverse effect on the structural strength of the aircraft; (3) After the sealing mechanism is installed, the entire sealing mechanism is fully exposed Outside the theoretical shape of the aircraft, it will cause a certain degree of damage to the aircraft's aerodynamics and stealth shape

Images