Radar Air To Air Missiles Ceramic Radome Structural Design And Failure Analysis

The radome design techonic is one of the key techonics in development of a radar-homing air-to-air missile, In development of the radome, the initially designed radome was structurally failed in a ground thermal-structural test. This paper models the failed test by using the finite element method and the results explained the reason of the test failure. By computing and analyzing the stresses on the initially designed radome, the weak point of the radome structure is identified, shedding light on improvement of the radome. In the following finite element computation of thermal-structural strength of an improved designed radome, not only a result consistent with the tests are achieved ,and also obtained displacement of the radome is well meeting the test data, well demonstrating a high accuracy of the finite element method and confidence of its results; And studying on the temperatures and stresses on the radome leads to some valuable conclusions and suggestions to further development, laying a sound foundation for further improvement of structural reliability of the radome. Finally, a structural new radome is developed and the new radome is analyzed in strength under structural and thermal loads in missile flight . The results show that the new radome has a much improved structural reliability but with the connection design of the metal tip leaving much to be improved. This paper has a reference value for development of air-to-air missile radomes.