5
TSSE Tailored Systems Engineering
Design Process
Synthesis
Top Level
Reqts
Delivered
to TSSE
SEA-8
Littoral
ASW
Project
Notional
Payload feedback
To SEA-8
Define
Notional
Payload &
Operational
Concept
Payload
Brief
Requirements
Clarification
Refined Reqts
Delivered
to TSSE
  Ship Type
& Size
IRD, Critical
Design
Parameters
Ship Functional
Requirements
Definition
Ship Design
Synthesis
Payload
Combat
       Systems
H M & E
Requirements
Analysis
Functional Analysis Allocation
AoA
Analysis
Of
Alternatives
Here is a depiction of our tailored process.

The Requirements Analysis Process began in July, with Top Level Requirement delivered to TSSE, and ensuing clarification between the two teams.

TSSE then tailored the classic process by adding an additional step.  This was the development of a Notional Payload and Operational Concept.  This step was a combination of Requirements and Functional Analysis as indicated by the two color block in the upper right.  This step was taken as a means of providing a scalable payload in terms of volume and weight that could be used as a basis for conducting an Analysis of Alternatives, or AoA.  This notional payload was fedback to SEA for their analysis to either accept, modify or reject as our final payload.  After some modification, it was accepted by both teams, and became a critical piece of the TSSE alternative.

We then began our Functional Analysis by performing a top level AoA which determined the best choice of ship size.  We then developed an Initial Requirements Document including a list of Critical Design Parameters based on top level and derived requirements.

The Critical Design Parameters were then input into the design synthesis.  Each of the three blocks under Synthesis then underwent their own versions of the classical SE process.