摘要
甚低频(Very low frequency,VLF)拖曳天线力学特征和控制是飞机对潜通信系统进一步深入论证需要解决的关键问题之一,而对其稳态动力学研究是进行甚低频拖曳天线力学特征和控制研究的基础。通过对载机盘旋时甚低频天线运动状态及其受力进行分析,应用牛顿定律建立机载甚低频拖曳天线稳态动力学模型。运用打靶法对其稳态动力学模型进行求解,分析载机速度、倾斜角和天线末端锥袋质量对天线末端锥袋量纲一半径和天线垂直度的影响。仿真结果表明在阻力系数较小时,在一定的倾斜角和载机飞行速度范围内其垂直度和天线末端量纲一半径存在多值情况,会导致拖曳天线系统的不稳定;在一定的阻力系数下,减小飞机速度,增加载机的倾斜角,能够提高甚低频拖曳天线的垂直度;单一增加天线末端锥袋质量来提高垂直度是不可行的。
The dynamic character and control of very low frequency（VLF） trailing antenna on a aircraft is one of most important problems which needs to research.The steady dynamic is the base of the dynamic character and control of the VLF trailing antenna.The mathematics model based Newton law of the trailing antenna is founded,and solved via a shooting technique.The influences of the angle of bank and the velocity of aircraft to the non-dismensionalization end radius and verticality are researched.The result shows that under the low drag,for certain ranges of the angle of bank and the velocity,the equilibrium solution is multivolume;under certain ranges of air drag,it is possible to descend the velocity of the aircraft and increase the bank angle to improve the verticality of the antenna.But it＇s impossible to increase the mass of the drogue only to improve the verticality of the antenna.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2012年第11期166-171,共6页
Journal of Mechanical Engineering
关键词
拖曳天线
稳态
末端半径
垂直度
Trailing antenna Steady state The end radius Verticality
