Its purpose is to establish that the system performs

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Unformatted text preview: • • Project type, especially for flight projects. Verification methods and timing depend on the type of flight article involved (e.g., an experiment, payload, or launch vehicle). NASA payload classification. The verification activities and documentation required for a specific flight article generally depend upon its NASA payload classification. As expected, the verification program for a Class A payload is considerably more comprehensive than that for a Class D payload. (See Appendix B.3 for classification guidelines.) Project cost and schedule implications. Verification activities can be significant drivers of a project's cost and schedule; these implications should be considered early in the development of the verification program. Trade studies should be performed to support decisions about verification methods and requirements, and the selection of facility types and locations. As an example, a trade study might be made to decide between performing a test at a centralized facility or at several decentralized locations. Risk implications. Risk management must be considered in the development of the verification program. Qualitative risk assessments and quantitative risk analyses (e.g., a FMECA) often identify new concerns that can be mitigated by additional testing, thus increasing the extent of verification activities. Other risk assessments contribute to trade studies that determine the preferred methods of verification to be used and when those methods should be performed. As an example, a trade might be made between performing a modal test versus determining modal characteristics by a less costly, but less revealing, analysis. The project manager/system engineer must • • • determine what risks are acceptable in terms of the project's cost and schedule. Availability of verification facilities/sites and transportation assets to move an article from one location to another (when needed). This requires coordination with the ILS engineer. Acquisition strategy (i.e., in-house development or system contract). Often a NASA field center can shape a contracto...
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This document was uploaded on 02/26/2014 for the course E 515 at University of Louisiana at Lafayette.

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