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A generalized modal shock spectra method for spacecraft loads analysisUnlike an earlier shock spectra approach, generalization permits an accurate elastic interaction between the spacecraft and launch vehicle to obtain accurate bounds on the spacecraft response and structural loads. In addition, the modal response from a previous launch vehicle transient analysis with or without a dummy spacecraft - is exploited to define a modal impulse as a simple idealization of the actual forcing function. The idealized modal forcing function is then used to derive explicit expressions for an estimate of the bound on the spacecraft structural response and forces. Greater accuracy is achieved with the present method over the earlier shock spectra, while saving much computational effort over the transient analysis.
Document ID
19790012006
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Trubert, M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Salama, M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 3, 2013
Publication Date
March 1, 1979
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
JPL-PUB-79-2
NASA-CR-158417
Accession Number
79N20177
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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