Analysis and design of a friction brake for momentum exchange propulsion tethers

Lennert, Simone; Cartmell, M.P.

doi:10.1016/j.actaastro.2005.07.042

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…For control of the deploying process, a special brake was disposed on FLOYD (Lennert and Cartmell, 2006). The gear had a very simple construction as it allowed only deployment of the tether without the capability of inverse retraction.…”

Section: Mass -Mechanical and Data Acquisition Supportmentioning

confidence: 99%

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Delivery of a payload from an orbit by means of a space tether

Aslanov¹,

Ledkov²

2012

Dynamics of Tethered Satellite Systems

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Section: Mass -Mechanical and Data Acquisition Supportmentioning

confidence: 99%

“…At the heart of the braking gear lies the idea stated by Carroll (1993). The braking mechanism is well reviewed in the article by Lennert and Cartmell (2006). The more the length of the tether touching with the cylinder, the more the friction force action.…”

Section: Mass -Mechanical and Data Acquisition Supportmentioning

confidence: 99%

Delivery of a payload from an orbit by means of a space tether

Aslanov¹,

Ledkov²

2012

Dynamics of Tethered Satellite Systems

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“…Sub-span velocity responses during the braking phase are shown in Figures 14(a) and 14(b). It should be noted that in practice braking would require a precisely controllable deployer brake such as the 'barberpole' concept [8]. A torque in the order of MNm is required to spin the tether system up but it has been shown in this study that deployment of the sub-spans can in fact be ensured by torques even in the kNm region.…”

Section: Deployment Studymentioning

confidence: 99%

“…Proposals for the on-orbit three dimensional dynamics of a dumb-bell version of this concept were first published in 1998 [1] and there have subsequently been several major studies carried out by students and collaborators of the fourth author since that time, with some selected relevant publications given in [2][3][4][5][6][7][8][9][10][11][12]. Current research activity is centred on interplanetary payload propulsion using motorised tethers [11,12] and now on debris removal from LEO and the local vicinity.…”

Section: Introductionmentioning

confidence: 99%

The mechanics of motorised momentum exchange tethers when applied to active debris removal from LEO

Caldecott¹,

Kamarulzaman²,

Kirrane³

et al. 2014

AIP Conference Proceedings

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Abstract. The concept of momentum exchange when applied to space tethers for propulsion is well established, and a considerable body of literature now exists on the on-orbit modelling, the dynamics, and also the control of a large range of tether system applications. The authors consider here a new application for the Motorised Momentum Exchange Tether by highlighting three key stages of development leading to a conceptualisation that can subsequently be developed into a technology for Active Debris Removal. The paper starts with a study of the on-orbit mechanics of a full sized motorised tether in which it is shown that a laden and therefore highly massasymmetrical tether can still be forced to spin, and certainly to librate, thereby confirming its possible usefulness for active debris removal (ADR). The second part of the paper concentrates on the modelling of the centripetal deployment of a symmetrical MMET in order to get it initialized for debris removal operations, and the third and final part of the paper provides an entry into scale modelling for low cost mission design and testing. It is shown that the motorised momentum exchange tether offers a potential solution to the removal of large pieces of orbital debris, and that dynamic methodologies can be implemented to in order to optimise the emergent design.

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