Explosive cutting rope protection method for airframe truss or frame structure
An aircraft fuselage and blasting cutting technology, which is applied in the field of aviation lifesaving, can solve the problems of difficulty in the arrangement of cutting cables, and achieve the effects of great practical value, simple method and convenient operation.
Active Publication Date: 2013-05-08
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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AI Technical Summary
Problems solved by technology
It is difficult to cut the frame, truss and skin structure, that is, the structure of the combination of profile and plate, and the arrangement of cutting cables
Method used
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Embodiment Construction
[0021] The present invention will be further described in detail through specific embodiments below.
[0022] The figure is a schematic structural view of a preferred embodiment of the present invention.
[0023] Proceed as follows:
[0024] (1) According to the specific dimensions of the aircraft fuselage girder 1 and skin 2 structures, the arrangement and sampling of the 3-span girder part of the cutting cable is carried out (such as image 3 );
[0025] (2) According to the sampling shape of the cutting cable 3 and the long stringer 1, design a protective device closely matched with the outer surface of the above-mentioned cutting cable 3 and the long stringer 1, and divide the protective device into two parts 4, 5 at the top of the long stringer 1 , design the cutting cable installation grooves 6, 7 in the protection device 4, 5 according to the shape of the cutting cable 3;
[0026] (3) During installation, the cutting cable 3 is straddled on the stringer 1 structure f...
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The invention discloses an explosive cutting rope protection method for an airframe truss or frame structure. The method comprises the following steps of: (1) arranging and sampling a cutting rope spanning the truss or frame structure; and (2) when protection devices (3) tightly matched with the cutting rope and the outer surface of the truss or frame structure are installed, enabling the cuttingrope to span the truss or frame structure, extruding the cutting rope and the truss or frame structure from two sides by using the protection devices of two parts to ensure that the cutting rope is tightly matched with the truss or frame structure, then taking down the protection devices of the two parts and the cutting rope, coating structural adhesive to the protection devices of the two parts and the cutting rope, sequentially laying the cutting rope on the truss or frame structure, and installing the protection devices. The protection devices are made of a rubber material or a composite material. According to the technical scheme, aiming at the explosive cutting of the airframe truss or frame structure, the protection method for the cutting rope is designed, so that the cutting rope can adapt to long-time vibration, high temperature, low temperature and humid environments of an airplane.
Description
technical field [0001] The invention relates to the technical field of aviation lifesaving, in particular to the improvement of the existing blasting cutting cable protection method. Background technique [0002] The aircraft life-saving system is a system to ensure that the occupants leave the aircraft smoothly under irreversible circumstances. For transport aircraft, emergency hatches are set on the aircraft to allow the occupants to escape from the aircraft in the air, forced landing on water and forced landing on the ground. channel. Due to the low probability of emergencies in transport aircraft and the need for lifesaving, the installation of emergency hatches on the aircraft will cause problems such as increased structural weight and the need to increase the hydraulic system for air use. Using blasting cutting technology, there is no emergency hatch on the aircraft. When emergency escape is required, the fuselage structure is blasted and cut to form an emergency exit...
Claims
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IPC IPC(8): B64C1/06
Inventor 关焕文朱永峰封文春宋文娟
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA