NDLI: Map attitude control system design and flight performance

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Map attitude control system design and flight performance

Content Provider	NASA Technical Reports Server (NTRS)
Author	O'Donnell, J. R. Andrews, S. F.
Copyright Year	2002
Description	The Microwave Anisotropy Probe (MAP) is a follow-on to the Differential Microwave Radiometer (DMR) instrument on the Cosmic Background Explorer (COBE) spacecraft. To make a full-sky map of cosmic microwave background fluctuations, a combination fast spin and slow precession motion will be used that will cover the entire celestial sphere in six months. The spin rate should be an order of magnitude higher than the precession rate, and each rate should be tightly controlled. The sunline angle should be 22.5 +/- 0.25 deg. Sufficient attitude knowledge must be provided to yield instrument pointing to a standard deviation of 1.3 arc-minutes RSS three axes. In addition, the spacecraft must be able to acquire and hold the sunline at initial acquisition, and in the event of a failure. Finally. the spacecraft must be able to slew to the proper burn orientations and to the proper off-sunline attitude to start the compound spin. The design and flight performance of the Attitude Control System on MAP that meets these requirements will be discussed.
File Size	373726
Page Count	7
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20020061379
Archival Resource Key	ark:/13960/t3cz85k7s
Language	English
Publisher Date	2002-01-01
Access Restriction	Open
Subject Keyword	Spacecraft Design, Testing And Performance Precession Control Systems Design Anisotropy Satellite Attitude Control Radiation Measurement Background Radiation Microwave Probes Microwaves Cosmic Background Explorer Satellite Celestial Sphere Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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