A new type of gas-driven two-stage light gas gun piston and counterweight combination device

Abstract

The invention relates to a novel gas drive two-stage light gas gun piston and additional weight combination device. The combination device is of a nylon 66-tungsten alloy-nylon 66 piston three-section type structure, front end nylon 66, a tungsten alloy additional weight and back end nylon 66 are all arranged to be cylinders, a front end nylon 66 horn mouth is arranged at the front end of the front end nylon 66, front end nylon 66 grooves are formed in front end nylon 66 side walls, a tungsten alloy additional weight and front end nylon 66 connecting protrusion is arranged at the front end of the tungsten alloy additional weight, a tungsten alloy additional weight and back end nylon 66 connecting protrusion is arranged at the back end of the tungsten alloy additional weight, and a back end nylon 66 and additional weight connecting grooves are arranged on a cylinder central axis of the front end of the back end nylon 66. By means of the nylon 66-tungsten alloy-nylon 66 piston three-section type balanced design of the novel gas drive two-stage light gas gun piston and additional weight combination device, the diameter of the additional weight is reduced appropriately, a pump pipe is not likely to block, damage of additional weight dismounting to the pump pipe is avoided, the pump pipe cannot be blocked even though the additional weight is repeatedly used and deformation upsetting occur, and the additional weight is stopped at a high-pressure taper section and is easy to take out.

Description

technical field [0001] The invention relates to the field of ultra-high-speed projectile drive, in particular to a piston and counterweight combination device of a gas-driven two-stage light gas cannon projectile loading system. Background technique [0002] Research on the protection of space debris and kinetic energy weapons all require the development of ultra-high-speed projectile drive technology. Because the gas-driven two-stage light gas gun has the characteristics of launching various shapes of projectiles, it has a wide range of adaptation to the quality, size and material of the projectiles, and is one of the most widely used technologies in ultra-high-speed projectile driving. The two-stage light gas gun is mainly composed of primary and secondary air chambers, solenoid valves, pistons, pump tubes, high-pressure cones, diaphragms, projectiles, launch tubes, and target cabins. [0003] The working principle of the gas-driven two-stage light gas gun to drive the pr...

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Problems solved by technology

[0005] At present, the domestic gas-driven two-stage light gas gun piston and counterweight combination device mostly adopts a two-stage structure, that is, polyethylene at the front end and copper column for counterweight at the rear end. The advantages of this design are: (1) satisfying the requirements of the piston Weight requirements and front-end deformation requirements, that is, when entering the high-pressure cone section, the strong inertia of the counterweight copper column can keep the polyethylene at a high deformation speed, increasing the gas pressure, which is conducive to the movement of the projectile at a higher speed; (2) The counterweight copper column can be reused many times; the disadvantages are: (1) The counterweight copper column is easy to deform and upset due to the instantaneous temperature rise during high-speed movement. When the diameter is larger than the inner wall of the pump tube, it will stop moving forward and block the pump tube, and the drive will fail and damage the pump at the same time. (2) The sealing performance of the air chambers at the front and rear ends is poor. If the difference between the diameter of the counterweight copper column and the inner wall of the pump tube is too small, it is easy to scratch the pump tube. The airtightness of the chamber is poor; (3) The density is small, the weight is light, and the utilization efficiency of the driving energy of the front air chamber is low

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