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Multi-Tethered Space-Based Interferometers: Particle System ModelDynamics models are presented for a class of space-based interferometers comprised of multiple component bodies, interconnected in various arrangements, by low-mass flexible tethers of variable length. The tethered constellations are to perform coordinated rotational scanning accompanied by baseline dimensional changes, as well as spin axis realignments and spin-up/spin-down maneuvers. The mechanical idealization is a system of N point masses interconnected by massless tethers of variable length. Both extensible and inextensible tethers are considered. Expressions for system angular and linear momenta are developed. The unrestricted nonlinear motion equations are derived via Lagranges equations. Rheonomic constraints are introduced to allow prescribed motion of any degrees of freedom, and the associated physical forces are determined. The linearized equations of motion are obtained for the steady rotation of a system with extensible tethers of constant unstrained length.
Document ID
20010120103
Acquisition Source
Goddard Space Flight Center
Document Type
Other
Authors
Gates, Stephen S.
Date Acquired
September 7, 2013
Publication Date
September 14, 2001
Subject Category
Ground Support Systems And Facilities (Space)
Report/Patent Number
AD-A395110
NRL/MR/8231-01-8579
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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