飞机轮胎溅水计算方法及翻边轮胎挡水原理分析

当飞机起飞或降落在有水的机场跑道上时,飞机轮胎所造成水的飞溅会对飞机的安全飞行有重要的影响。飞机轮胎所造成的水的飞溅是个复杂的过程,与诸多因素有关,如飞机的速度,轮胎的形状和尺寸以及水的深度等等。介绍了影响水的飞溅角的重要参量和理论计算公式,通过计算得到不同速度下的飞溅角,并与相应的试验结果进行了对比,验证了算法的正确性。为了抑制溅水对发动机产生影响,引入翻边轮胎,通过分析计算发现翻边轮胎抑制水溅作用显著。在算例分析的基础上,解释了翻边轮胎的挡水原理,并给出了翻边挡水作用的判别公式。最后给出了选择翻边轮胎的方法,对飞机的溅水试验和飞机防溅水设计具有指导意义。

Method for estimating the water spray of aircraft tyre and water retaining analysis of chine tyre

When an aircraft taking off or landing on a wet runway, the spray produced by the aircraft tyres has significant effects on flight safety. The water spray produced by the aircraft tyres is a complex process, which is related with many factors,such as the velocity of the aircraft, the geometry of the tyres and the water depth. Some important parameters and theoretical formulas for estimating the water spray angle are introduced, with which the spray angles in different speeds can be calculated, and then the results are compared with the test data from aircraft water spray test, the effectiveness of the method is proved. In order to restrain the effect of water spray for engine, chine tyre is introduced. Chine tyre is better to restrain water spray by calculation and analysis. Base on the example analysis, water retaining of the chine tyre is explained and the criterial equation of water retaining is got. Finally the method of chooseing chine tyre is gived, which provides vital guidiance for the experiment of aircraft water spray and the design of the aircraft water protection.