Design Services Systems Engineering Portsmouth

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Design Services - Systems Engineering - Portsmouth

• Systems Engineering Team Composition
• Combination of Engineers and Domain Experts
• Knowledge of Command Systems, Comms, EW,
  Navigation etc.
• Provide consultancy support to PCOs and IPTs
• Particular skills
• Requirements Engineering (elicitation of the
  customers needs, analysis and management through
  life)
• Scenario Analysis (to support development of the
  requirements and assess system capability)
• Functional Analysis (to support development of
  the requirements and of the design solution)
• Support to Design
• Support to Trials and Acceptance
• Context
• Process Improvement acknowledging CMMi
• Standards such as ISO/IEC 15288, IEEE 1220, EIA
  632, EIA 731

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Mapping Between Requirements Viewpoints
Operational Tasks
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Requirements Structuring - Semantics and Syntax

• Standard Rules for Requirements Definition
• Requirements must be explicit - will form part of
  contract
• Requirements must be consistent - no
  contradictions and express the capability
  required
• Requirements must be quantifiable - avoid
  underachieving or over achieving
• Requirements must be verifiable - to enable
  acceptance

Subject
Contract
Function
Target
Measurement
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PAM Context Diagram - Level C
AIRCRAFT
AIRCRAFT - CVF CAG, Other Aircraft HUMAN
COMPLEMENT - Crew JFHQ - Ship services supplied
to JFHQ HUMAN NON COMPLEMENT - Non
Crew SUPPORT AUTHORITIES - Tankers, Dockyard,
DLO BELOW WATER ENVIRONMENT - Submerged
Objects, Sea bed ABOVE WATER ENVIRONMENT -
Ships, Aircraft, Land Objects
ABOVE WATER ENVIRONMENT
HUMAN COMPLEMENT
ABOVE WATER ENVIRONMENT
HUMAN COMPLEMENT
CVF SHIP MODEL
CVF SHIP MODEL
JFHQ
BELOW WATER ENVIRONMENT
BELOW WATER ENVIRONMENT
HUMAN NON COMPLEMENT
SUPPORT AUTHORITIES
SUPPORT AUTHORITIES
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PAM Level 0
AIRCRAFT
SUPPORT AUTHORITIES
JFHQ
HUMAN COMPLEMENT
BELOW WATER ENVIRONMENT
BELOW WATER ENVIRONMENT
BELOW WATER ENVIRONMENT
DEFENCE 3
INFORMATION 4
INFORMATION 4
PLATFORM 1
PLATFORM 1
ABOVE WATER ENVIRONMENT
BELOW WATER ENVIRONMENT
ABOVE WATER ENVIRONMENT
POWER AND PROPULSION 2
AUX 5
AUX 5
SUPPORT AUTHORITIES
SUPPORT AUTHORITIES
HUMAN COMPLEMENT
OUTFIT 6
AIRCRAFT SUSYEMS 7
HUMAN COMPLEMENT
HUMAN NON COMPLEMENT
AIRCRAFT
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Data Source
Diesel Fuel DDD Part 4.2 - 5 Supply Fuel
Functional Description Diesel Fuel DDD Part 4.3
-1 Functional Interfaces
Store containing the individual Control and
status demands made on the Information System
Process Specification for Provide Fuel Supply
The process takes clean fuel from the ships
service tanks (STORED_SERVICE_DIESEL_FUEL) and by
means of pumps and a piped distribution system to
supply main generators, boilers, incinerator,
emergency generators etc., via (DIESEL_FUEL).
Remote control of the pumps and valves will be
via flow (Remote_Control) messages and the status
will be monitored via flow (Remote_Status). In
the event of a loss of remote control or
maintenance, manual control of the pumps and
valves is represented by flow (Local_Control) and
the visual indications or valve positions via
flow (Local_Status). Electrical power at 440v
60Hz is supplied via (LV_ELECTRICITY).
REMOTE_CONTROL
REMOTE_STATUS
LOCAL_CONTROL
PROVIDE FUEL SUPPLY PFS 5
HUMAN COMPLEMENT
LOCAL_STATUS
Store containing the individual demands made on
the Electrical Power System
Crew activities relating to the operation of the
Fuel Supply System
Store containing the total allowable storage of
diesel fuel in terms of volume
Store containing the individual demands made on
the Fuel Supply System
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Actual printout from the PAM indicating the
individual demands for electricity - the source
being Power (POW) and the destinations a (three
letter code) representing individual demanding
System/equipment
PROVIDE FUEL SUPPLY PFS 5
Definition of the flow - 440v 60Hz (KVa) to the
fuel supply pumps
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Functional Modelling

• What is it - develop abstract representations of
  system from different viewpoints to aid
  understanding
• Benefits
• support requirements analysis through providing
  structure and assisting in completeness and
  consistency checking
• represent required capability and potential
  design solutions
• support mapping between viewpoints, capability
  and design
• provide framework to assess suitability of
  candidate design solution
• provide basis for definition of design solution,
  through architecture, sub-system specification
  and interface specifications
• Analysis started early in lifecycle prior to
  commitment to costly solution
• Provides basis to investigate integration
  problems
• Provide basis for trials and acceptance
  definition
• Framework in which to investigate upgrades

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Requirements Trade-off and Decision Support

• Complex process dependencies exist between
  scenarios, requirements, and architectures where
  all are developed through stages of maturity
  together

Scenarios
Trade-off requirement satisfaction against
architecture (cost, time) for different system
scenarios
Requirements
Architectures
time

• Requirements re-assessed through life of project
• Therefore needs to be managed through appropriate
  processes
• Traceability and links established
• Consistency and completeness checking
• Appropriate use of Requirements Database

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Design Services - System Engineering
Provides expertise supporting the whole project
lifecycle, from developing an understanding of
the customers initial requirements, through to
proof of delivery of a solution that meets the
stated needs.

• Brunei OPV
• Functional Combat Systems Model
• Implementation Model
• Scenario Development
• Performance Modelling
• Trials Support

• LPD(R)
• Feasibility Study
• Trials Support
• Magazine Design
• Ship/Air Interface

• T45 Destroyer IPT
• Behavioural Analysis Model
• System Requirements Workshops
• Logistic Support Requirements Workshops
• SRD Development
• Scenario Development

• T42 Destroyer
• Implementation Model
• Assessment of Equipment Upgrade

• Future Carrier (CVF)
• Concept Study
• Functional Analysis
• Requirements Capture
• Scenario Development
• Performance Development
• Statement of Work
• SRD Development
• Platform Implementation Modelling
• Magazine Design
• Ship/Air Interface

• T45 Destroyer PCO
• Functional Analysis
• Fighting Characteristics Definition
• Operability Statements

• Malaysian Frigates
• Trials Support