Effects of Ascending and Descending Climbers on Space Elevator Cable Dynamics
Effects of Ascending and Descending Climbers on Space Elevator Cable Dynamics
复制标题
上升和下降登山者对太空电梯缆绳动力学的影响
DOI：
10.1016/j.actaastro.2018.01.031
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发表时间：
2018
影响因子：
3.5
通讯作者：
Y and Doi H
中科院分区：
文献类型：
--
作者：
Ishikawa Y;Otsuka K;Yamagiwa;Y and Doi H
基于质点模型，研究了空间电梯在载人飞行过程中的缆索动力学问题。首先分析了一个上升或下降的攀登者在一个单一的操作过程中的电缆响应，然后，基于结果，电缆动力学的同时操作的上升和下降的攀登者进行评估。对于单次操作，当登山者在地球表面附近旅行时，弯曲是很重要的。由于科里奥利力对应于攀登者的速度，缆索也会以周期性振荡的方式倾斜。然而，同时操作上升和下降的攀登者可以抑制电缆的倾斜几乎十倍。在同时操作中，与单个操作相比，下降的攀登者具有较小的振动角幅度和较小的线缆弯曲，而当攀登者以200 km/h和400 km/h的攀登者速度在较高的海拔处行进时，上升的攀登者具有较小的幅度。整体电缆的振荡的相位被发现是接近的下降登山者。电缆弯曲被抑制为任何检查登山者的速度，但这种抑制的位移登山者velocity. In总结的依赖性没有发现，同时操作可以肯定地抑制电缆的倾斜通过抵消科里奥利力的两个登山者。
Based on a mass-point model, the cable dynamics of a space elevator during a climber's travel motion are examined. The cable response during a single operation of one ascending or descending climber is analyzed first, and then, based on the results, the cable dynamics for simultaneous operation of an ascending and a descending climber are evaluated. For the single operation, bending is significant when the climber is traveling near the Earth's surface. The cable also inclines with periodic oscillation as a result of a Coriolis force corresponding to the climber velocity. However, simultaneous operation of ascending and descending climbers can suppress the inclination of the cable by almost a factor of ten. In simultaneous operation, compared to single operation, a descending climber has a smaller amplitude of libration angle and less cable bending, while an ascending climber has a smaller amplitude when the climber is traveling at a higher altitude with climber velocities of 200 km/h and 400 km/h. The phase of the oscillation of the overall cable is found to be close to that of the descending climber. Cable bending is suppressed for any examined climber velocity, but the dependency of this suppression of displacement on climber velocity is not found. In summary, simultaneous operation can surely suppress the inclination of the cable via the cancellation of Coriolis forces by the two climbers.