The Experts below are selected from a list of 1503 Experts worldwide ranked by ideXlab platform
M P Cartmell - One of the best experts on this subject based on the ideXlab platform.
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motorised momentum exchange Space Tethers the dynamics of asymmetrical Tethers and some recent new applications
International Conference on Engineering Vibration, 2018Co-Authors: M P Cartmell, O A Ganilova, Eoin Lennon, Gavin ShuttleworthAbstract:This paper reports on a first attempt to model the dynamics of an asymmetrical motorised momentum exchange tether for Spacecraft payload propulsion, and it also provides some interesting summary results for two novel applications for motorised momentum exchange Tethers. The asymmetrical tether analysis is very important because it represents the problematic scenario when payload mass unbalance intrudes, due to unexpected payload loss or failure to retrieve. Mass symmetry is highly desirable both dynamically and logistically, but it is shown in this paper that there is still realistic potential for mission rescue should an asymmetry condition arise. Conceptual designs for tethered payload release from LEO and lunar tether delivery and retrieval are also presented as options for future development.
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a review of Space tether research
Progress in Aerospace Sciences, 2008Co-Authors: M P Cartmell, D J MckenzieAbstract:The review paper attempts to provide a useful contextualised source of references for the student interested in learning about Space Tethers, and their potential for propulsion of payloads in Space. The two principal categories of momentum exchange and electrodynamic Tethers are discussed, with the principal aim of establishing useful sources of fundamental theory in the literature, as well as highlighting important technology and mission development papers. The large-scale international effort that continues to be made in the area of Space tether research is evident, with major literature contributions from the world-wide scientific and technical community. The overarching theme of the paper is to show the richness and diversity of tether modelling that has been undertaken in recent times, and to emphasise, by means of many different examples, that dynamics and control are the two fundamentally important aspects of all tether concepts, designs, and mission architectures.
D J Mckenzie - One of the best experts on this subject based on the ideXlab platform.
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a review of Space tether research
Progress in Aerospace Sciences, 2008Co-Authors: M P Cartmell, D J MckenzieAbstract:The review paper attempts to provide a useful contextualised source of references for the student interested in learning about Space Tethers, and their potential for propulsion of payloads in Space. The two principal categories of momentum exchange and electrodynamic Tethers are discussed, with the principal aim of establishing useful sources of fundamental theory in the literature, as well as highlighting important technology and mission development papers. The large-scale international effort that continues to be made in the area of Space tether research is evident, with major literature contributions from the world-wide scientific and technical community. The overarching theme of the paper is to show the richness and diversity of tether modelling that has been undertaken in recent times, and to emphasise, by means of many different examples, that dynamics and control are the two fundamentally important aspects of all tether concepts, designs, and mission architectures.
Bin Zheng - One of the best experts on this subject based on the ideXlab platform.
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dynamical modelling and control of Space Tethers a review of Space tether research
Nonlinear Dynamics, 2014Co-Authors: Yi Chen, Rui Huang, Xianlin Ren, Bin ZhengAbstract:The literature review manuscript focuses mainly on five topics, which are related to the Space tether control researches: (1) Space tether dynamical modelling; (2) tether deployment and retrieval; (3) trajectory generation and control; (4) tether attitude and motion control; (5) tether vibration control and dynamical simulations. With the basic aim of establishing useful sources of fundamental researches in the literature, and high-lighting the previous control methods developed, this paper attempts to provide a contextualised source of references for the further Space tether dynamics and control studies.
G H M Van Der Heijden - One of the best experts on this subject based on the ideXlab platform.
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magnetically induced buckling of a whirling conducting rod with applications to electrodynamic Space Tethers
arXiv: Dynamical Systems, 2008Co-Authors: J M Valverde, G H M Van Der HeijdenAbstract:We study the effect of a magnetic field on the behaviour of a slender conducting elastic structure, motivated by stability problems of electrodynamic Space Tethers. Both statical (buckling) and dynamical (whirling) instability are considered and we also compute post-buckling configurations. The equations used are the geometrically exact Kirchhoff equations. Magnetic buckling of a welded rod is found to be described by a surprisingly degenerate bifurcation, which is unfolded when both transverse anisotropy of the rod and angular velocity are considered. By solving the linearised equations about the (quasi-) stationary solutions we find various secondary instabilities. Our results are relevant for current designs of electrodynamic Space Tethers and potentially for future applications in nano- and molecular wires.
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instability of a whirling conducting rod in the presence of a magnetic field application to the problem of Space Tethers
ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, 2005Co-Authors: J M Valverde, G H M Van Der HeijdenAbstract:We study the effect of a magnetic field on the behaviour of a slender conducting elastic structure subject to end forces. Both statical (buckling) and dynamical (whirling) instability are considered and we also compute post-buckling configurations. The theory used is the geometrically exact Cosserat rod theory. We consider two types of boundary conditions: the traditional welded boundary conditions (for tether-like applications) and a novel set of boundary conditions that give rise to exact helical post-buckling solutions. Our results are relevant for current designs of electrodynamic Space Tethers and potentially for future applications in nano- and molecular wires.Copyright © 2005 by ASME
Yi Chen - One of the best experts on this subject based on the ideXlab platform.
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dynamical modelling and control of Space Tethers a review of Space tether research
Nonlinear Dynamics, 2014Co-Authors: Yi Chen, Rui Huang, Xianlin Ren, Bin ZhengAbstract:The literature review manuscript focuses mainly on five topics, which are related to the Space tether control researches: (1) Space tether dynamical modelling; (2) tether deployment and retrieval; (3) trajectory generation and control; (4) tether attitude and motion control; (5) tether vibration control and dynamical simulations. With the basic aim of establishing useful sources of fundamental researches in the literature, and high-lighting the previous control methods developed, this paper attempts to provide a contextualised source of references for the further Space tether dynamics and control studies.