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| Design and Simulation of an Air-acting Open Tail Fin |
| Received:June 02, 2023 Revised:October 08, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.11.002 |
| KeyWord:tail fin open electromagnetic emission aerodynamic simulation dynamic mesh numerical simulation fluid mechanics |
| Author | Institution |
| BAI Shao-bo |
Northwest Institute of Mechanical & Electrical Engineering, Shaanxi Xianyang , China |
| WEI Ning-bo |
Northwest Institute of Mechanical & Electrical Engineering, Shaanxi Xianyang , China |
| YAO Xin-tao |
Northwest Institute of Mechanical & Electrical Engineering, Shaanxi Xianyang , China |
| LI Zhi-fei |
Northwest Institute of Mechanical & Electrical Engineering, Shaanxi Xianyang , China |
| LIU Huan |
Northwest Institute of Mechanical & Electrical Engineering, Shaanxi Xianyang , China |
| WANG Cheng |
Northwest Institute of Mechanical & Electrical Engineering, Shaanxi Xianyang , China |
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| Abstract: |
| The work aims to design a kind of open tail fin which is directly acted by air to adapt to the electromagnetic emission technology without gunpowder gas and projectile spin. The tail was prefabricated with a bevel angle. The pressure difference by inlet air flow on the bevel pushed the tail fin screw open. The process of tail opening under different Mach numbers was simulated by a coupling fluid control equation and a six degrees of freedom (6DOF) equation with dynamic mesh technology. The results showed that the air-acting open tail fin could open normally under the action of flow field. When the incoming flow rate was 2, 3 and 4 Ma, the opening time was 4.7, 3.7 and 3.1 s, respectively. The simulation results show that the scheme design is effective. Higher mach number means shorter opening time and the windward area significantly affects the opening process of tail fin. |
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