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| Vibration Responses of the Cockpit Caused by Aerodynamic Sources |
| Received:July 08, 2020 Revised:July 11, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.09.008 |
| KeyWord:large eddy simulation pulsating pressure flow separation CFD man-machine efficacy |
| Author | Institution |
| XIE Wei-jie |
AVIC Xi¢an Aircraft Industry Group Co., Ltd, Shaanxi, Xi¢an , China |
| YANG Hong-jie |
AVIC Xi¢an Aircraft Industry Group Co., Ltd, Shaanxi, Xi¢an , China |
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| Abstract: |
| The paper aims to analyze the influence on the vibrating responses of some interested parts inside the cockpit, which is caused by the bumps on the outer surface of the cockpit. The pulsating pressures on the outer surface of front fuselage under some specific working conditions were calculated firstly through large eddy simulation methodology. Then the pulsating pressures was applied to the detailed finite element model of the front fuselage and the responses of acceleration of some stations in the cockpit were obtained. After analysis of the acceleration response result and comparison of the test flight data, it was confirmed that the bumps on the outer surface of the cockpit contributed a lot to the magnitude of vibration inside the cockpit. The contribution of flow separation could reach 25 percent at the peak position. Relevant calculation results could be used to evaluate the man-machine efficacy and optimize the external form of the cockpit. |
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