Block 4 - lecture 1

Question 1

Why create models?

Answer 1

• inputs/method not yet specified

- quality, unique output needed

Question 2

types of models?

Answer 2

• components (geometry, physical/mathematical relationships, performance)
• systems (geometry, facilities layout, electronics)
• operations (behaviour of factories, supply chain etc.)

Question 3

document based approach?

Answer 3

communicating with documents eg:

• user/functional requirements
• functional/technical/testing specification
• descriptions (shown in drawings, schematics, CAD, reports)

Question 4

advantages and disadvantages of a document based approach?

Answer 4

\+ conventional way
\+ simple
\+ well understood
- admin burden
- slow updates
- incomplete
- requires 'waterfall' approach

Question 5

direct model based approach?

Answer 5

looking at/sharing the CAD directly, rather than the drawings made from it

Question 6

advantages and disadvantages of a direct model based approach?

Answer 6

\+ time savings
\+ less effort
\+ less admin
\+ lower cost
\+ quick updates
- doesn't consider the whole system

Question 7

MBSE?

Answer 7

model-based systems engineering

Question 8

model-based systems engineering?

Answer 8

The application of models for all:
- system requirements
- design, analysis
- verification
- validation
across the whole design and development process

Question 9

advantages and disadvantages of model-based systems engineering?

Answer 9

\+ less time to find information
\+ stakeholders more integrated
\+ less ambiguity
\+ fewer gaps
\+ find issues earlier
\+ better record of issues
\+ easier to determine interactions
\+ clearer to re-use on legacy products