摘要
将起落架总轮轴轴线数等于或大于3的飞机定义为多轮轴飞机。通过对飞机在地面上转弯滑行的状态进行的运动学和静力学分析,提出了等效主轮轴的概念,使用库仑摩擦定律分析了等效主轮轴的位置。根据固定多轮轴飞机作转弯滑行时总存在一个偏航力矩会阻止飞机转弯这一事实,发现了一个额外的行驶阻力。给出的算例表明,这一额外的行驶阻力可达该飞机重量的15%以上。这一研究结果可以作为多轮轴飞机主轮轴可转向设计的参考。
The paper defined an aircraft with three or more wheel axles as a multi-axle aircraft. It analyzed the status of aircraft taxiing while turning on ground by kinematics and statics. A concept of equivalent main axle was presented. Then analyzed its probable position by Coulomb friction law. Noticing a yawing moment which always prevents an aircraft with fixed multi-axle turning-taxiing, described an additional driving drag. The exact calculation showed that the addition driving drag might reach 15% of the gravity of an aircraft. The conclusion supported the landing gear design of applying some main wheel axles for steering.
作者
甘欣
伍智敏
席锋
GAN Xin WU Zhimin XI Feng(AVIC The First Aircraft Institute, Xi＇an China, 710089)
出处
《航空科学技术》
2016年第12期47-52,共6页
Aeronautical Science & Technology
关键词
飞机
起落架
滑行
阻力
功率
aircraft
landing gear
taxiing
drag
power
