Single-tube air cannon capable of achieving continuous launching

Abstract

The invention discloses a single-tube air cannon capable of achieving continuous launching. The single-tube air cannon comprises a launching tube, a pellet feeding device 2, an electric servo actuator3 for pellet feeding, an experimental control system 4, an electric servo actuator 5 for launching / air supplement, a launching air chamber 6, a combination valve body 7 and an air supplement chamber8, wherein the launching tube 1 is connected with the pellet feeding device 2, and a plurality of pellets can be prearranged in the pellet feeding device 2; one pellet is pushed by the electric servoactuator 3 for pellet feeding to enter the launching tube; the launching tube 1 is connected with the launching air chamber 6, and the launching air chamber is of a rotator type stepped cylindrical structure, and, and is composed a large chamber at the right end and a small chamber at the left end; and the launching air chamber 6 is connected with the small chamber of the air supplement chamber 8through an air path. According to the technical scheme, the test requirements of aircraft structures, high speed trains, wind turbine blades and other high speed running machines for continuous impactby foreign objects can be met, and meanwhile the launching interval or frequency can be set through control over the regulation of parameters.

Description

technical field [0001] The invention belongs to the field of research and development of a special impact test loading device, which is used for realizing continuous impact loading of projectiles, and can adjust the firing interval and firing quantity according to loading requirements. Background technique [0002] Composite materials have the advantages of high specific strength, high specific stiffness, strong designability, and good fatigue resistance. They can significantly reduce structural weight, improve structural load-bearing efficiency, and reduce operating costs. Modern aircraft, high-speed rail, etc. are increasingly using composite materials. . The proportion of composite materials on Boeing 787 and A350XWB can reach more than 50%. The amount of composite materials has become an important reference to measure the advanced level of modern civil aircraft. In order to reduce energy consumption, the field of high-speed rail is also carrying out research and applica...

AI Technical Summary

Problems solved by technology

[0005] In addition to the composite material structure, the radome, windshield glass, engine nacelle, and engine fan blades of the aircraft also need to undergo hail impact tests. For example, the windshield glass and radome require continuous hail impact tests in the area to evaluate the radome. Changes in the bearing characteristics and electromagnetic characteristics of the structure, and at the same time evaluate the impact of bird strike resistance and optical properties on the transparent parts of the windshield after hail impact, but there is no similar test device for single-point continuous impact tests in China

[0006] In engineering practice, there is a test system that achieves continuous impact through sequential firing of multiple barrels, such as the 9-tube or even 16-tube air cannon used in the bird swallowing test of the engine test bench. Mechanism, multiple sets of single-tube launching mechanisms are combined through the test bench to achieve the purpose of continuous launching. This kind of experimental system has an extremely complex structure and high cost, and it cannot guarantee the accuracy of the impact position of the projectile, and the dispersion range is large. It is difficult to achieve precise control of the impact interval, and it is mostly used to simulate continuous impact in the area

Images