SPHERES tethered formation flight testbed: advancements in enabling NASA's SPECS mission

Details SPHERES tethered formation flight testbed: advancements in enabling NASA's SPECS mission SPHERES tethered formation flight testbed: advancements in enabling NASA's SPECS mission

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6268e..11c&link_type=abstract

Advances in Stellar Interferometry. Edited by Monnier, John D.; Schöller, Markus; Danchi, William C.. Proceedings of the SPIE,

Statistics

Methodology

Scientific paper

This paper reports on efforts to control a tethered formation flight spacecraft array for NASA's SPECS mission using the SPHERES test-bed developed by the MIT Space Systems Laboratory. Specifically, advances in methodology and experimental results realized since the 2005 SPIE paper are emphasized. These include a new test-bed setup with a reaction wheel assembly, a novel relative attitude measurement system using force torque sensors, and modeling of non-ideal tethers to account for tether vibration modes. The nonlinear equations of motion of multi-vehicle tethered spacecraft with elastic flexible tethers are derived from Lagrange's equations. The controllability analysis indicates that both array resizing and spin-up are fully controllable by the reaction wheels and the tether motor, thereby saving thruster fuel consumption. Based upon this analysis, linear and nonlinear controllers have been successfully implemented on the tethered SPHERES testbed, and tested at the NASA MSFC's flat floor facility using two and three SPHERES configurations.

Affiliated with

Also associated with

No associations

Rating

SPHERES tethered formation flight testbed: advancements in enabling NASA's SPECS mission does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with SPHERES tethered formation flight testbed: advancements in enabling NASA's SPECS mission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SPHERES tethered formation flight testbed: advancements in enabling NASA's SPECS mission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1623337