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| Numerical Calculation and Analysis on Interior Ballistics of Compacted Traveling Charge with a Central Hole |
| Received:February 23, 2022 Revised:March 15, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.03.006 |
| KeyWord:gun traveling charge ignition delay interior ballistics firing safety |
| Author | Institution |
| CAO Yong-jie |
Northwest Institute of Mechanical and Electrical Engineering, Xianyang , China |
| DOU Song-song |
Northwest Institute of Mechanical and Electrical Engineering, Xianyang , China |
| ZHAO Na |
Northwest Institute of Mechanical and Electrical Engineering, Xianyang , China |
| HU Jie |
School of Mechatronic Engineering, Xi'an Technological University, Xi'an 2, China;Norinco Group Test and Measuring Academy, Huayin , China |
| LI Zhi-fei |
Northwest Institute of Mechanical and Electrical Engineering, Xianyang , China |
| ZHANG Wang |
Northwest Institute of Mechanical and Electrical Engineering, Xianyang , China |
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| Abstract: |
| In order to promote the engineering application of compacted traveling charge technology, a structured scheme of compacted traveling charge with the central hole was proposed. The corresponding interior ballistic model was established for the scheme, and the variation of the interior ballistic performance of the traveling charge under different charges and different ignition delay time was calculated. The calculation results show that the design height of the end-face combustion traveling charge is limited subject to the flammability constraint, and the interior ballistic performance is improved little. Under the condition of the constant burning rate of the traveling charge, the traveling charge with the central hole can effectively increase the traveling charge mass and thus significantly improve the interior ballistic performance. The control accuracy of the ignition delay time of traveling charge with center hole should be 0.01 ms, which requires high design and machining precision of slow combustion coating layer. The research can guide the design of the delay ignition mechanism of the traveling charge with the coating layer based on slow combustion materials. |
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