关键词: 涡轮喷气发动机;模态分析;模态振动试验

Abstract: The pulse-excitation method (hammer-excitation method) for modal test is introduced,demonstrating following advantages:simple equipment and installations, convenient manipulation and easy excitation point movement,which makes the excitation realized in such positions where installation of exciters are not permited. The tested results will be submitted to the genaral design department of× × missile to check structural dynamic properties of the engine fitting to the missile, also will be used for vibration analysis of the engine.

Key words: Turbojet engine;Modal analysis;Modal vibration test