舰载战斗机增阻轮挡几何尺寸设计方法

Design Method for the Geometric Dimensions of Aircraft Carrier Fighter Jet Blast Deflectors

在进行舰载战斗机的起降性能试飞或舰载机飞行员训练时,通常需要使用止动轮挡。然而,止动轮挡的结构复杂、占用大量空间且成本昂贵。为应对舰载机在陆基试飞和飞行员训练中的需求,提出一项创新性的解决方案,即采用成本更为经济的增阻轮挡来替代止动轮挡。基于经典动力学理论,建立舰载机和增阻轮挡之间的数学模型。以某型舰载机为例,进行详细的定量分析,探讨舰载机的重量及增阻轮挡的倾斜角度对舰载机在增阻滑行中的影响。研究结果显示,适用的增阻轮挡倾斜角度取决于舰载机的发动机推力和起飞重量范围。对于某型舰载机,在最小起飞重量G0到最大起飞重量G0+12000 kg之间,适用的增阻轮挡倾斜角度范围为14~21°。因此,在进行舰载机的陆基飞行试验或飞行员训练时,可以选择倾斜角度为17.5°,高度为46.3 mm,宽度为机轮宽度的2~3倍的增阻轮挡。此外,研究结果还指出,舰载机的起飞重量包线越宽,适用的增阻轮挡倾斜角度范围就越狭窄。该研究为提高经济性和效率性提供一种替代止动轮挡的方法,有望在舰载机试验和训练中得到广泛应用。

In the take-off and landing performance test of carrier-based aircraft or the training of carrier-based aircraft pilots,it is usually necessary to use stop gear.However,the structure of the stop gear is complex,takes up a lot of space and is expensive.In order to meet the needs of carrier-based aircraft in land-based flight test and pilot training,an innovative solution is proposed,that is,the more economical drag gear is used to replace the stop gear.Based on the classical dynamics theory,the mathematical model between carrier aircraft and drag gear is established.Taking a certain type of carrier aircraft as an example,a detailed quantitative analysis is carried out,and the effects of the weight of the carrier aircraft and the tilt angle of the drag gear on the resistance increase taxiing of the carrier aircraft are discussed.The research results show that the applicable tilt angle of the drag gear depends on the engine thrust and take-off weight range of the carrier aircraft.For a certain type of carrier aircraft,between the minimum takeoff weight G0 and the maximum takeoff weight G0+12000 kg,the applicable tilt angle of the drag-increasing wheel gear is from 14°to 21°.Therefore,in the land-based flight test or pilot training of carrier-based aircraft,the increased resistance gear with tilt angle of 17.5°,height of 46.3 mm and width of 2 to 3 times the width of the wheel can be selected.In addition,the research results also point out that the wider the take-off weight envelope of the carrier-based aircraft is,the narrower the inclination angle range of the drag-increasing wheel gear is.This study provides a method to replace the stop gear to improve the economy and efficiency,and is expected to be widely used in carrier aircraft test and training.