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Unformatted text preview: d computer modeling. Analysis may be used when it can be
determined that: (1) rigorous and accurate analysis is
possible; (2) testing is not feasible or cost-effective; (3)
similarity is not applicable; and/or (4) verification by
inspection is not adequate.
Verification by demonstration is the use of
actual demonstration techniques in conjunction with
requirements such as maintainability and human
engineering features. Verification by similarity is the
process of assessing by review of prior acceptance data
or hardware configuration and applications that the
article is similar or identical in design and manufacturing
process to another article that has previously been
qualified to equivalent or more stringent specifications.
Verification by inspection is the physical evaluation of
equipment and/or documentation to verify design
features. Inspection is used to verify construction
features, workmanship, and physical dimensions and
condition (such as cleanliness, surface finish, and
locking hardware). Verification by simulation is the
process of verifying design features and performance
using hardware or software other than flight items.
Verification by validation of records is the process of
using manufacturing records at end-item acceptance to
verify construction features and processes for flight
Verification Stages. Verification stages are defined
periods of verification activity when different verification
goals are met. In this handbook, the following
verification stages are used for flight systems:
Preparation for deployment (also known as pre
Analyses and Models Analyses based on models are used extensively
throughout a program/project to verify and determine
compliance to performance and design requirements.
Most verification requirements that cannot be verified
by a test activity are verified through analyses and
modeling. The analysis and modeling process begins
early in the project life cycle and continues through
most of Phase D; these analyses and models are
updated periodically as actual data that are used as
inputs become available. Of...
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