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Is the reliability analysis based on a sound
methodology, and does it allow for realistic
logistics planning and life-cycle cost analysis?
Are sufficient project reserves and schedule
slack available to proceed further? Results of Review — As a result of successful
completion of the PDR, the "design-to" baseline is approved. It also authorizes the project to proceed to final
Critical Design Review. The Critical Design Review
(CDR) is not a single review but a number of reviews
that start with specific Cls and end with the system CDR.
Purpose —The CDR discloses the complete system design in full detail, ascertains that technical
problems and design anomalies have been resolved,
and ensures that the design maturity justifies the
decision to initiate fabrication/manufacturing, integration,
and verification of mission hardware and software.
Timing —Near the completion of the final design
Objectives—The objectives of the CDR are to:
• • Ensure that the "build-to" baseline contains detailed hardware and software specifications that
Ensure that the design has been satisfactorily
audited by production, verification, operations,
and other specialty engineering organizations
Ensure that the production processes and
controls are sufficient to proceed to the
Establish that planned Quality Assurance (QA)
activities will establish perceptive verification
and screening processes for producing a quality
Verify that the final design fulfills the
specifications established at PDR. Criteria for Successful Completion —The following items compose a checklist to aid in determining
readiness of CDR product preparation: NASA Systems Engineering Handbook
Management Issues in Systems Engineering
• Can the proposed final design be expected to
meet all the requirements within the planned
cost and schedule?
Is the design complete? Are drawings ready to
begin production? Is software product definition
sufficiently mature to start coding?
Is the &q...
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