Experimental study and application on water impact response of wedge-shaped structure

There will be a big load on the structure when it impacts on the water, which has an important effect on the safety of the capsule structure and the people inside. Therefore, the research of water impact has a practical significance in the aerospace and military fields. Base on a simple wedge model, the test of wedge falling on the water has been vertically investigated. The photographs of wedge into water are recorded by the high speed camera. The acceleration response of wedge impact on the water is studied and the reasonable value of acceleration is obtained by filtering. These results indicated that it can be clearly found that the airtight cavity of wedge has a great influence on the acceleration. According to the similarity criteria, the impact response of real aircraft structure is predicted by the testing data, which has a valuable reference for the design of water entry structure.