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ARCH.004 Analyse trade space factors

GoalIdentify and characterise the factors that will dominate tradeoff decisions on operational and system architecture.
Requirements met by this process step

EN 50126-1 7.2.2 b)
ISO 15288 6.4.1.3 b 1)

Inputs

Consultation with a small set of key stakeholders

Existing strategic documentation

Knowledge of the person doing the work

Outputs

AMOD-010 Trade space assessment

Methodology

This task is mostly a case of the person responsible using their own knowledge and some research or stakeholder consultation to explore a standard range of factors to determine which of them is particularly dominant in this current project.

Mnemonics such as TEPIDOIL or PESTEL are used in defence systems engineering to prompt the engineer to consider relevant factors. Tutorial material on these mnemonics can be found by searching them on the Internet or consulting a systems engineering textbook.

For each heading in the mnemonic, find out

  • if this factor is at all relevant to DBB
  • in what ways this factor manifests for DBB - identify specific factors under this theme

Then attempt to rank the factors according to their relative dominance in architectural decision-making for the organisation/system of interest.

Document the findings of the analysis in plain English.

Tools and non-human resources

Systems Engineering literature

Confluence (note: an area for this, and a ticket SM-2557 - Carry out and document PESTEL constraint analysis for section on operational constraints Finished , have already been set up)

CardinalityOne-off, with possibility for later revisions.
Completion criteria

The analysis results are judged to be reasonable, accurate and relevant to the organisation.

All review feedback has been addressed.

Design review
Step done by (Responsible)Operational concept architect
Provides input to/assists (Contributes)Product Owner
Uses outputs (Informed)None directly