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高原机场自然条件的主要特点是气压低,空气密度小。与平原机场相比,相同载荷的农用飞机以同一表速着陆时,在高原机场接地的真速大。以海拔1895m的某机场为例,年平均气压80.8kPa,以表速280km/h接地,则真速可达307km/h,真速比表速增大约10%。1轮胎过热的原因及危害1.1轮胎过热的原因农用飞机接地后动能的相当大部分要通过机轮刹车装置的摩擦作用,转变为热能消散掉,其中一部分热能传导给轮毂并且通过轮毂传导给轮胎,这会使轮胎的温度显著升高。粗猛着陆,使用刹车过多,会大大超出规定的轮胎温度使用范围,这是高原机场轮胎易过热的基本原因。另一方面随着机场标高的升高,空气密度降低,大气对机轮的散热较为困难。海拔高度越高,这种影响
The main features of the high altitude airport natural conditions are low pressure, low air density. Compared with the plain airport, the same load of agricultural aircraft landing at the same watch speed, high speed in the plateau airport ground truth. Taking an airport of 1895m above sea level as an example, with an average annual pressure of 80.8kPa and a ground speed of 280km / h, the true speed will reach 307km / h and the true speed will increase by about 10%. 1 tire overheating causes and hazards 1.1 cause of tire overheating A considerable portion of the agricultural aircraft grounding kinetic energy through the wheel brake device friction effect, into heat dissipated, part of the heat conduction to the wheel hub and through the conduction to the tire, This causes a significant increase in the temperature of the tire. Rough landing, the use of brakes too much, will greatly exceed the prescribed temperature range of use of the tire, which is easy to overheat the plateau airport tires the basic reason. On the other hand, with the elevation of the airport increasing, the air density is reduced, and the atmosphere is more difficult to heat the wheels. The higher the altitude, this effect