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Spacecraft Micro-Vibration: A Survey of Problems, Experiences, Potential Solutions, and Some Lessons LearnedPredicting, managing, controlling, and testing spacecraft microvibrations due to on-board internal disturbance sources is a formidable multi-disciplinary systems engineering challenge, especially for those observatories hosting extremely sensitive optical sensor payloads with stringent requirements on allowable line-of-sight jitter. In this paper some specific spacecraft micro-vibration engineering challenges will be introduced and described. Technical background context is provided with the inclusion of several illustrative examples of NASA and European Space Agency missions (both past and present) where dynamic interactions have to be addressed and which have demanding payload instrument line-of-sight jitter requirements. A general modeling, analysis, simulation, and test approach to address and solve the overall problem of spacecraft micro-vibrations is outlined. Recommended rules of thumb are presented to provide guidance for analysts on where to initiate and how to approach a new spacecraft micro-vibration design problem. A set of experience-based spacecraft micro-vibration lessons learned are also presented in the hope they can be leveraged on new system development projects to help overcome unfamiliarity with previously identified microvibration technical pitfalls and challenges.
Document ID
20180006315
Document Type
Technical Memorandum (TM)
Authors
Dennehy, Cornelius (NASA Langley Research Center Hampton, VA, United States)
Alvarez-Salazar, Oscar S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
October 16, 2018
Publication Date
July 1, 2018
Subject Category
Space Transportation and Safety
Report/Patent Number
NASA/TM?2018-220075
NF1676L-30645
L-20945
Funding Number(s)
WBS: WBS 869021.03.07.01.03
Distribution Limits
Public
Copyright
Public Use Permitted.

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