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The Space Technology-7 Disturbance Reduction System Precision Control Flight Validation Experiment Control System DesignAs originally proposed, the Space Technology-7 Disturbance Reduction System (DRS) project, managed out of the Jet Propulsion Laboratory, was designed to validate technologies required for future missions such as the Laser Interferometer Space Antenna (LISA). The two technologies to be demonstrated by DRS were Gravitational Reference Sensors (GRSs) and Colloidal MicroNewton Thrusters (CMNTs). Control algorithms being designed by the Dynamic Control System (DCS) team at the Goddard Space Flight Center would control the spacecraft so that it flew about a freely-floating GRS test mass, keeping it centered within its housing. For programmatic reasons, the GRSs were descoped from DRS. The primary goals of the new mission are to validate the performance of the CMNTs and to demonstrate precise spacecraft position control. DRS will fly as a part of the European Space Agency (ESA) LISA Pathfinder (LPF) spacecraft along with a similar ESA experiment, the LISA Technology Package (LTP). With no GRS, the DCS attitude and drag-free control systems make use of the sensor being developed by ESA as a part of the LTP. The control system is designed to maintain the spacecraft s position with respect to the test mass, to within 10 nm/the square root of Hz over the DRS science frequency band of 1 to 30 mHz.
Document ID
20060026219
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
O'Donnell, James R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hsu, Oscar C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Maghami, Peirman G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Markley, F. Landis
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2006
Subject Category
Systems Analysis And Operations Research
Report/Patent Number
ISTS-2006-160645
Meeting Information
Meeting: 19th International Symposium on Space Flight Dynamics
Location: Kanazawa
Country: Japan
Start Date: June 4, 2006
End Date: June 11, 2006
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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