LARGE SPACE TELESCOPE CONTROL MOMENT GYRO TEST FROGRAM

摘要

This final report describes in detail the underlying theory and design of test instrumentation and computer techniques used to determine the power spectral density (PSD) of the Draper Laboratory Third Generation Gyro. Acceptance test results on the completed instrument (instrument build funded in part under this program) are presented as well as composite PSD plots determined from data taken at both Draper Laboratory and at Martin Company, Denver. The measured RMS noise over the frequency band 0. 0025 - JO Hz was C. 012 arc seconds (at Draper Laboratory).' Results obtained at Martin Company indicate an RMS noise of 0. 009 arc seconds (0. 05 - 10 Hz). The results obtained showed the TGG performance was close to the proposed LST requirements but that additional development work would be needed to reduce the TGG noise to within more desirable limits.