The service life of turbojet engine depends on the temperature, material and dynamic balance before turbine. When the temperature in front of the turbine is high for a long time, the material of the turbine determines its service life. The turbine will creep at high temperature, which is actually thermal expansion. Therefore, when the turbine is made of materials with poor creep resistance, it is easy to rub against the casing. And if the dynamic balance is not handled properly, it may disintegrate at 65438+ 10,000 rpm. Generally speaking, it is the same as when the wheel washing machine is dehydrated. If the clothes are not laid flat, they will be off-axis and make a loud noise. Therefore, either there is no equipment to control the speed and manually feel the dynamic balance in the early test run, or there is no way to extend the engine life. Because the smaller it is, the more difficult it is to do heat dissipation measures. The upper part of Dafa can be cooled by air film. Microf can't do this. It is limited by the processing level.
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