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| Launch Dynamic Response of an Aircraft Gun with Uncertain Parameters |
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| DOI：10.7643/issn.1672-9242.2022.09.017 |
| KeyWord:aircraft gun, uncertainty, rigid flexible coupling, convex model, vibration, firing density |
| Author | Institution |
| WANG Jing |
Institute of Vibration Engineering, Northwestern Polytechnic University, Xi'an , China |
| YANG Yong-feng |
Institute of Vibration Engineering, Northwestern Polytechnic University, Xi'an , China |
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| Abstract: |
| Analyze the influence of random uncertainty on the launch dynamics to improve the shooting intensity. In this paper, a rigid-flexible coupling dynamic model of an aircraft gun is established. The launch dynamics simulation analysis is carried out by ADAMS. And the uncertainties of aircraft gun are considered. The convex model is introduced to quantify the uncertainty of aircraft gun system. The influence of parameter uncertainties such as buffer spring stiffness, balancer spring stiffness and chamber resultant force on the firing density of aircraft guns is revealed. The results show that the muzzle vibration amplitude increases and fluctuates in the interval under the influence of uncertainty factors. The muzzle vibration of the aerial gun seriously affects the firing density, therefore, uncertainties must be taken into account in the design of aircraft gun. The obtained results have certain guiding significance for improving the firing density of aircraft gun. |
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