Study about the simultaneous deployment performance of the cables from GEO station at the space elevator construction

Tao, Koki; Yamagiwa, Yosiki; Otsuka, Kiyotoshi; Ishikawa, Yoshinori

doi:10.1016/j.actaastro.2017.01.032

Cited by 12 publications

(2 citation statements)

References 3 publications

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“…The tether dynamics in space has been analyzed for various situations. Takeichi [11] and Tao et al [12] analyzed the behavior of tether deployment during construction. Aslanov et al [13] proposed a simulation method for the tether rupture behavior.…”

Section: ) Analysis Of Tether Dynamics In Spacementioning

confidence: 99%

Dynamics and Energy Analysis of Nonequatorial Space Elevator Using Three-Dimensional Nonlinear Finite Element Method Extended to Noninertial Coordinate System

et al. 2022

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A space elevator is a futuristic space transportation technology that enables low-cost and versatile payload transportation using climbers on a tether deployed from the geostationary orbit (GEO). In particular, a nonequatorial space elevator, which contains an anchor in a region with latitudes on the Earth, has recently attracted attention. It has several advantages, such as extending the construction range and avoiding collisions with spacecraft in the GEO. Prior research has focused on rigid-body or springmass models with low fidelity. This paper proposes a modeling method for nonequatorial space elevators using a nodal-position finite element method (NPFEM) extended to a rotational coordinate system. The NPFEM is a three-dimensional finite element method that considers geometric nonlinearity. Conventional NPFEMs have only been formulated using inertial coordinate systems. This paper proposes a method to

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Section: ) Analysis Of Tether Dynamics In Spacementioning

confidence: 99%

Dynamics and Energy Analysis of Nonequatorial Space Elevator Using Three-Dimensional Nonlinear Finite Element Method Extended to Noninertial Coordinate System

et al. 2022

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“…We therefore developed the simultaneous cable-deployment model, which considered cable flexibility, using a simple cable model of a constant cross-section, and showed the possibility of reducing the total propellant for controlling the cable dynamics in preceding studies. 8,9) In the current study, we analyze the cable dynamics and stress for the proposed cable deployment method under the assumed deployment conditions using a realistic model in which the cross-section through the cable was changed as the stress in the cable became constant throughout. We then calculate the total impulse during cable deployment necessary to maintain the GEO station and control cable deployment speed within the limits of maximum cable stress.…”

Section: Introductionmentioning

confidence: 99%

Cable Dynamics and Control at the Simultaneous Deployment of the Cables from GEO Station during Space Elevator Construction

Yamagiwa

Tao

Sato

et al. 2018

AEROSPACE TECHNOLOGY JAPAN

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The understanding of cable dynamics is one of the most important issues for the design and construction of a space elevator. We propose a new method for constructing the space elevator by simultaneously deploying cables upward and downward from the main space station maintained in GEO and balancing both cables. The analysis is performed using our originally developed cable dynamics model. The model is a two-dimensional lamped mass model. In the model, the tether is modelled by mass points, which are connected to each other by a spring and a damper, and are pulled out per assumed length. In this study, we first analyze the cable dynamics and stress for assumed deployment conditions of the cables. We then obtain the total impulse necessary to keep the main station in GEO and control the cable speed during deployment so that it does not exceed the maximum stress of the cable. The results are also compared with the preceding method for the same conditions. The initial result shows that with the proposed cable-deployment method, the total propellant mass necessary to control cable dynamics while maintaining the station in GEO can be decreased by about one-third compared with that necessary to raise the main station to higher orbit and to control cable dynamics as in the preceding cable-deployment method.

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Effects of ascending and descending climbers on space elevator cable dynamics

et al. 2018

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Study about the simultaneous deployment performance of the cables from GEO station at the space elevator construction

Cited by 12 publications

References 3 publications

Dynamics and Energy Analysis of Nonequatorial Space Elevator Using Three-Dimensional Nonlinear Finite Element Method Extended to Noninertial Coordinate System

Dynamics and Energy Analysis of Nonequatorial Space Elevator Using Three-Dimensional Nonlinear Finite Element Method Extended to Noninertial Coordinate System

Cable Dynamics and Control at the Simultaneous Deployment of the Cables from GEO Station during Space Elevator Construction

Effects of ascending and descending climbers on space elevator cable dynamics

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