Reviews
provide checks and balances
throughout the Design Phases.
Engineering
Reviews
A
Needs Review
may
follow an analysis of sponsor needs, if those needs
require clarification or the current ones change.
A
Requirements Review
formalizes
system and subsystem requirements to best satisfy
customer needs. This may not be necessary if the
requirements are initially well defined.
Design
Reviews look
at the spacecraft system to ensure customer needs
are met.