To define good requirements we must:
Define the right scope
Elements of Scope
Example: launch, rendezvous, docking transfer, re-entry
Operational Concept
Example: provide crewed access to the space
Need
Example: financial, scheduling, geographic
Constraints
Define ConOps:
A description of how an expected system will be operated during the mission phases in order to meet stakeholder expectations
DRM (Design Reference Mission)
Mission (hypothetical) that will put the system to the ultimate test. Used for determining design alternatives
____ Leads to organized requirements
Scoping