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Proceedings Paper

Disturbance reduction system: testing technology for precision formation control
Author(s): William M. Folkner; Sasha Buchman; Robert L. Byer; Daniel B. DeBra; C. J. Dennehy; Manuel Gamero-Castano; J. Hanson; Vlad Hruby; George M. Keiser; Andy Kuhnert; F. Landis Markley; M. Houghton; P. Maghami; David C. Miller; S. Prakash; Robert Spero
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Paper Abstract

The Disturbance Reduction System (DRS) is a space technology demonstration within NASAs New Millennium Program. DRS is designed to validate system-level technology required for future gravity missions, including the planned LISA gravitational-wave observatory, and for formation-flying interferometers. DRS is based on a freely-floating test mass contained within a spacecraft that shields the test mass from external forces. The spacecraft position will be continuously adjusted to stay centered about the test mass, essentially flying in formation with the test mass. Colloidal microthrusters will be used to control the spacecraft position within a few nanometers, over time scales of tens to thousands of seconds. For testing the level of acceleration noise on the test mass, a second test mass will be used as a reference. The second test mass will also be used as a reference for spacecraft attitude. The spacecraft attitude will be controlled to an accuracy of a few milliarcseconds using the colloidal microthrusters. DRS will consist of an instrument package and a set of microthrusters, which will be attached to the European Space Agencys SMART2 spacecraft with launch scheduled for August 2006.

Paper Details

Date Published: 3 March 2003
PDF: 8 pages
Proc. SPIE 4860, High-Contrast Imaging for Exo-Planet Detection, (3 March 2003); doi: 10.1117/12.457878
Show Author Affiliations
William M. Folkner, Jet Propulsion Lab. (United States)
Sasha Buchman, Stanford Univ. (United States)
Robert L. Byer, Stanford Univ. (United States)
Daniel B. DeBra, Stanford Univ. (United States)
C. J. Dennehy, NASA Goddard Space Flight Ctr. (United States)
Manuel Gamero-Castano, Busek Co., Inc. (United States)
J. Hanson, Stanford Univ. (United States)
Vlad Hruby, Busek Co., Inc. (United States)
George M. Keiser, Stanford Univ. (United States)
Andy Kuhnert, Jet Propulsion Lab. (United States)
F. Landis Markley, NASA Goddard Space Flight Ctr. (United States)
M. Houghton, NASA Goddard Space Flight Ctr. (United States)
P. Maghami, NASA Goddard Space Flight Ctr. (United States)
David C. Miller, Jet Propulsion Lab. (United States)
S. Prakash, NASA Goddard Space Flight Ctr. (United States)
Robert Spero, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4860:
High-Contrast Imaging for Exo-Planet Detection
Alfred B. Schultz; Richard G. Lyon, Editor(s)

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