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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
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
Risk implications. Risk management must be
considered in the development of the
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
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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