飞艇系留系统静态与动态仿真研究

Static and Dynamic Simulation of Tethered Airship

文章建立了飞艇系留系统多体力学仿真模型,将绳索处理为质点-弹簧-阻尼系统,在有风条件下针对某型飞艇产品进行了静力学和动力学分析。结果表明,张力从地面沿系留绳逐渐增大,在与飞艇连接处达到峰值;在一定范围内,随着飞艇攻角的增加,飞艇的驻空高度增加,偏移量减小,但绳索内部张力也有显著的提高;绳索质量增大会影响飞艇系留系统性能;随着风速的增加,飞艇的水平偏移量增大,驻空高度降低,绳索张力增大;在变风场条件下,绳索内张力波动范围不大。

Both static and dynamic models of a tethered airship are developed,in which the cable is divided into several segments of nodes and each segment is considered to be a lumped mass spring.The result of simulation of the airship in static state shows that the internal tension increases along the cable from ground to the junction of airship;In a certain extents,the altitude of airship increases and the horizontal shift decreases as increasing of the angle of attack,however the internal tension also significantly increases;weight of the cable has a great effect on the performance of the tethered airship system.As wind speed increases,the altitude of airship decreases,the horizontal shift increases,while the tension increases.In changing wind conditions,the internal tension varies a little.