Vibrometer's Measurement Technology in High Temperature

The high-speed flight's body surface's temperature may surpass 1000°C by the influence of air friction, therefore the thermostable measuring technique is one of key technologies in this kind of weapon experiments. In missile's ground experiment environment, the acceleration instrument all around uses the high temperature spotlight illumination to elevate temperature, this temperature may reach 1400°C. In order to surveys vibration signal on shell body surface under this high temperature, we needs to carry on thermal protection to the ordinary accelerometers. This paper introduced one kind of accelerometers high temperature-surveys technology, designed the thermal protection and refrigerate the structural, realizes oscillation measuring technique in high temperature, and through the ANSYS simulation and related experimental verification structure reliability.