Orbital Propagation of Spinning Momentum Exchange Tether Systems

Westerhoff, John H.

doi:10.2514/6.2002-3898

Cited by 2 publications

(1 citation statement)

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“…For example, it was assumed that the tether would be spinning at some predefined rate in an elliptical orbit, but no study on the effects of the coupling between orbital dynamics and attitude dynamics of the system were included. This effect becomes important over long durations (Martinez-Sanchez and Gavit, 1987) and its effect was included in some initial work undertaken by Westerhoff (2002). However, more detailed studies are needed to fully quantify the effects.…”

Section: Review Of Literature On Tether Transportationmentioning

confidence: 99%

Dynamics and Control of Spinning Tethers for Rendezvous in Elliptic Orbits

Williams¹

2006

Journal of Vibration and Control

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The dynamics and control of spinning tethers in elliptical orbits for payload rendezvous is studied. The required rendezvous conditions for the tether tip are derived for the case where the tether system center of mass and payload are in coplanar elliptic orbits. It is proposed that rendezvous control can be achieved by tracking the unique tip trajectory generated by propagating the rendezvous conditions backwards in time. The range of suitable combinations of tether system orbit eccentricity, tether length, and payload orbit eccentricity are studied numerically. It is shown that certain combinations of parameters lead to non-spinning capture requirements and slack tethers. Control of the tether motion through tether reeling is examined using a nonlinear model predictive control strategy. Numerical results illustrating the effectiveness of the controller are presented.

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Section: Review Of Literature On Tether Transportationmentioning

confidence: 99%