There are many kinds of aircraft bearings. In response to customer requirements for bearings to reduce weight, reduce environmental pollution and high performance, bearing systems have become more complex, requiring higher reliability and quality control. Design theory and industry development trend of jet engine spindle bearing. With the rapid development of emerging markets and the global expansion of low-cost carriers, the demand and sales of commercial aircraft are growing steadily.
The model engine first has only two high-temperature ceramic ball bearings, and the market price is generally about 300. Secondly, the combustion chamber is too simple, the combustion efficiency is low, the fuel consumption is high, the turbine blade does not have a cooling device, there is no perfect lubrication cooling system, the structure is too simple.
In order to reduce friction, high-speed turbine engines generally use full floating bearings, which can only transmit torque, and the friction force is reduced to a low value. Angular contact ball bearings are only used to withstand other torques. Axial thrust is mainly borne by thrust bearings.
The engine blade is mainly composed of composite materials, and the compressor blade is not much required. The engine shaft has lubrication channels and airways.
There is an airway between the turbine blade and the air guide blade, and a small hole punched out by the laser is used on the blade surface to form a gas film on the blade surface to separate the high-temperature gas during operation.
