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Flashcards in Systems Deck (36):
0

What is a System?

A system is a set of interrelated subsystems and components which interact with one another in an organized fashion toward a common purpose.

1

What is Systems Engineering?

Systems Engineering is an interdisciplinary approach and means to enable the production of robust systems, on-time and on-budget

2

What are the four main groups a systems engineer interacts with?

Management, Product Assurance, Operations & Logistics, Production

3

What is the purpose of the ECSS (European Commission for Space Standardisation)?

ECSS provides baseline working practices for systems engineering in line with eSA/EU/industry requirements and recommendations

4

Sequential vs Centralised vs Concurrent Design

Sequential goes from on person to the next in sequence.
Centralised has people communicating to a manager in the center, but not to one another.
Concurrent has all teams communicating to everyone.

5

What is phase 0 in a project lifecycle?

Pre-Phase A

6

What is Phase A in a project lifecycle?

Feasibility

7

What is Phase B in a project lifecycle?

Preliminary Definition

8

What is Phase C in a project lifecycle?

Detailed Definition

9

What is Phase D in a project lifecycle?

Production

10

What is Phase E in a project lifecycle?

Utilization

11

What is Phase F in a project lifecycle?

Disposal

12

What are the 9 types of mission requirements?

Functional, Configurational, Interfaces, Physical, Evironmental, Quality Factors, Operation, Support, Verification

13

Level 1 of the System Specification flow?

System

14

Level 2 of the System Specification flow?

Subsystem

15

Level 3 of the System Specification flow?

Set

16

Level 4 of the System Specification flow?

Equipment or SW product

17

Level 5 of the System Specification flow?

Assembly

18

List the four types of requirement verification:

Test, Analysis, Review of Design (ROD), Inspection

19

Where is the bulk of money spent during the system development process?

Design and Development

20

Why are there cost overruns?

Cost overruns are caused by unrealistic technology readiness assumptions and underbidding in order to win projects. Can be minimised by a thorough project definition.

21

Describe the procurement 'V' Process in flowing designs then feeding back hardware

Project initiator (MDR), Top level customer (PRR/SRR/PDR), 1st, 2nd, 3rd, etc. customer (PDRs), reverse order suppliers (CDR/QR/AR), System Operator (CRR)

22

What is an MDR?

Mission Design Review

23

What is a PRR?

Preliminary Requirements Review

24

What is a SRR?

Systems Requirements Review

25

What is a PDR?

Preliminary Design Review

26

What is a CDR?

Critical Design Review

27

What is a QR?

Qualification Review

28

What is an AR?

Acceptance Review

29

What is a CRR?

Cutover Readiness Review

30

State four types of hardware models in hardware qualification philosophy which may be built in a development program prior to the final fight models.

Programmatic Constraints, Integration & Test Programme, Development Status, Verification Strategies

31

What are Programmatic Constraints?

Schedule/Cost, Industrial Architecture, Reviews, Interfaces

32

What is included under Integration & Test Programme

Test Requirements, Test sequences, Test configurations, Test facilities

33

What contributes to Development Status?

New Technologies, Design Qualifications, Heritage, Potential Suppliers

34

What Verification Strategies are taken into consideration in a development programme?

Requirements categories, verification methods, verification levels, verification phases.

35

In order, Describe the potential tests and ECSS test sequence which a system/subsystem would have to go through during a typical qualification test.

Physical properties, humidity, leak, pressure, leak, acceleration, sinusoidal vibration: (Random Vibration & Accoustic), Shock, Leak, Corona and arcing, Thermal cycling, Thermal Vacuum, Leak, EMC/ESD, Life, Microgravity, Audible noise