NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Anomalous on-orbit behaviour of the NASA Cosmic Background Explorer (COBE) DewarA brief summary of the nominal cryogenic performance of the Dewar is presented, with emphasis on several aspects of the helium and spacecraft dynamical behavior. The occurrence of temperature and pressure oscillators in the Dewar porous plug is examined. The impact of the internal instrument malfunctions and of external radiation sources on the performance of the Dewar and of the instruments is reviewed. From measurements of the COBE spacecraft spin rate, the spin coupling of the liquid helium to the walls of the Dewar was monitored. The spin measurements are analyzed and a model for the coupling is presented. A number of 'lessons learned' from the COBE mission are reviewed, and the applicability of these lessons to future missions involving cryogenic payloads is addressed.
Document ID
19920041203
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Volz, S. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Dipirro, M. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Cryogenics
Volume: 32
Issue: 2, 19
ISSN: 0011-2275
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
92A23827
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available