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Hardware development for Gravity Probe-BGravity Probe-B (GP-B), also known as the Stanford Relativity Gyroscope Experiment, will test two fundamental predictions of Einstein's General Theory of Relativity by precise measurement of the precessions of nearly perfect gyroscopes in earth orbit. This endeavor embodies state-of-the-art technologies in many fields, including gyroscope fabrication and readout, cryogenics, superconductivity, magnetic shielding, precision optics and alignment methods, and satellite control systems. These technologies are necessary to enable measurement of the predicted precession rates to the milliarcsecond/year level, and to reduce to 'near zero' all non-General Relativistic torques on the gyroscopes. This paper provides a brief overview of the experiment followed by descriptions of several specific hardware items with highlights on progress to date and plans for future development and tests.
Document ID
19870039383
Document Type
Conference Paper
Authors
Bardas, D. (Stanford Univ. CA, United States)
Cheung, W. S. (Stanford Univ. CA, United States)
Gill, D. (Stanford Univ. CA, United States)
Hacker, R. (Stanford Univ. CA, United States)
Keiser, G. M. (Stanford University CA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Subject Category
SPACECRAFT INSTRUMENTATION
Funding Number(s)
CONTRACT_GRANT: NAS8-36125
Distribution Limits
Public
Copyright
Other