引言火箭和卫星发射之前,通常要进行如温度、湿度、振动和冲击等环境试验,以改进整个系统的可靠性。高强度的声试验即是其中的一种。国外,已经设计和建成了几种高强度声试验设备,并成功地投入了使用。火箭在起飞和最大动压飞行时会遇到严重的声环境。起飞时,噪声源就在火箭发动机的超音速排气流中。飞行期间,火箭外蒙皮紊流附面层里发生的压力脉动在最大动压时非常大。早期的高强度声试验利用火箭发动机和喷气发动机地面静态试验来模拟这些声环境。而 Introduction Rockets and satellites are usually preceded by environmental tests such as temperature, humidity, vibration and shock to improve the overall system reliability. High-intensity sound test is one of them. Abroad, several high-intensity sound test equipment has been designed and built and successfully put into use. The rocket encounters a serious acoustic environment during takeoff and maximum dynamic pressure flight. At takeoff, the noise source is in the rocket engine’s supersonic exhaust stream. During the flight, the pressure pulsations occurring in the turbulent turbulent outer layer of the rocket were very large at maximum dynamic pressure. Early high-intensity acoustic tests used rocket engines and jet engine ground static tests to simulate these acoustic environments. and