SYSTEMS ENGINEERING APPROACH

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SYSTEMS ENGINEERING APPROACH TO SYSTEM
REALISATION P. Srikumar
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SE - THE STARTING POINT

• LITERATURE ON THE SUBJECT
• LECTURES ON THE SUBJECT
• IMPLEMENTATION TOOLS
• EXAMPLES
• OUR PRACTICAL PROBLEMS
• IDENTIFY YOUR SYSTEM / SUBSYSTEM

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CONCEPT OF OPERATION

• Eg Long Range / Endurance UAV
• REQUIREMENT FOR THE MISSION
• PLAN THE MISSION
• PREPARE SYSTEM
• TEST SYSTEM
• LAUNCH / TAKE OFF
• CRUISE NAVIGATE, ALTERNATE MISSION
• LOITER IN AREA INTEREST FOR RECCY /
  SURVEILLANCE
• TRANSMIT INFORMATION
• RETURN CRUISE
• LAND BACK REFURBISH

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ALLOCATION OF FUNCTIONS TO SYSTEMS

• GROUND CONTROL STATION
• MISSION PLANNING CHECKOUT SYSTEM
• MISSION MONITORING CONTROL SYSTEM
• LAUNCHER / RUNWAY
• AIR VEHICLE
• PAYLOAD
• COMMAND DATA LINK
• FUNCTIONAL REQUIREMENTS

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PERFORMANCE REQUIREMENTS

• OPERATIONAL SPEED
• MIN MAX SPEED
• ALTITUDE OF OPERATION
• RANGE / RADIUS OF ACTION
• ENDURANCE / MISSION TIME
• PAYLOAD
• OPERATIONAL REQUIREMENTS

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SYSTEM REQUIREMENTS

• COMPLETE UNDERSTANDING APPRECIATION OF
• OPERATIONAL REQUIREMENTS
• VERIFIABLE
• STORAGE, HANDLING
• PREPARATION, TESTING, DEPLOYMENT
• OPERATIONAL FLEXIBILITY, RELIABILITY
• PERFORMANCE REQUIREMENTS
• MEASURABLE
• ACCURACY, RANGE, ENDURANCE
• SPEED, ALTITUDE
• FUEL, PAYLOAD

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CAPABILITY ANALYSIS

• TO ESTABLISH MATURITY OF
• EXPERTISE
• TECHNOLOGIES
• ENGINEERING
• INFRASTRUCTURE
• FUNDS
• VIABILITY

CAPABILITY TO DEVELOP A VIABLE USEFUL SYSTEM IN
TIME WITHIN REASONABLE COST TECHNOLOGY
READINESS LEVEL
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STAKEHOLDERS

• USER
• PRODUCTION AGENCY
• THE ORGANISATION
• PROGRAM GROUP
• DESIGNER
• DEVELOPERS
• OTHERS

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REQUIREMENTS ANALYSIS
TOP LEVEL REQUIREMENTS
SPECIFICATIONS
SINGLE-STEP PROCESS - NO ANALYSIS - NOT ACCEPTABLE
LOWER LEVEL REQUIREMENTS
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REQUIREMENTS ANALYSIS
TOP LEVEL REQUIREMENTS
DRAFT SPECIFICATIONS
LOWER LEVEL REQUIREMENTS
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REQUIREMENTS ANALYSIS
TOP LEVEL REQUIREMENTS
CAPTURE AUDIT THE RESOLUTION OF ISSUES RAISED
DRAFT SPECIFICATIONS
QUERIES CLARIFICATIONS
LOWER LEVEL REQUIREMENTS
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REQUIREMENTS ANALYSIS
TOP LEVEL REQUIREMENTS
DRAFT SPECIFICATIONS
FINAL SPECIFICATIONS
QUERIES CLARIFICATIONS
LOWER LEVEL REQUIREMENTS
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REQUIREMENTS ANALYSIS
SYSTEM REQUIREMENTS
FINAL SPECIFICATIONS
SUBSYSTEM REQUIREMENTS
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REQUIREMENTS ANALYSIS
TOP LEVEL REQUIREMENTS
DRAFT SPECIFICATIONS
FINAL SPECIFICATIONS
QUERIES CLARIFICATIONS
LOWER LEVEL REQUIREMENTS
LOWEST LEVEL REQUIREMENTS
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THE REQUIREMENTS FLOW
SYSTEM LEVEL
R1
R2
REQUIREMENTS
R3
SUBSYSTEM LEVEL
R4
R5
R6
COMPONENT LEVEL
R7
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THE REQUIREMENTS FLOW
UAV SYSTEM
AIR VEHICLE
CNG SYSTEM
MISSION COMPUTER
PROCESSOR BOARD
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REQUIREMENTS NODE
SYSTEM
SUBSYSTEM 2
SUBSYSTEM 3
SUBSYSTEM 1
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REQUIREMENTS TO SPECIFICATIONS

• DESIGN ANALYSIS TOOLS
• EMPIRICAL METHODS
• BLOCK DIAGRAMS
• FLOW CHARTS
• MODELING SIMULATION
• SURROGATE MODELS
• DETAILED MODELS

SYSTEM
SUBSYSTEM 2
SUBSYSTEM 3
SUBSYSTEM 1
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THE SPECIFICATIONS FLOW
SYSTEM LEVEL
S1
S2
SPECIFICATIONS
S3
SUBSYSTEM LEVEL
S4
S5
S6
COMPONENT LEVEL
S7
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VERIFICATION VALIDATION
PERFORMANCE VALIDATION
SS
SP
SSP3
SSS3
SSP1
SSS1
SYSTEM INTEGRATION
SSS2
SSP2
PERFORMANCE VERIFICATION
SS SYSTEM SPECS SSS SUBSYSTEM SPECS SP
SYSTEM PERFORMANCE SSP SUBSYSTEM
PERFORMANCE
V V - HOW ?
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SYSTEM INTEGRATION - THE V DIAGRAM
P1
S1
INTEGRATED PERFORMANCE
P2
SPECIFICATIONS
S2
S3
P3
S4
P4
S5
P5
S6
P6
S7
P7
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SYSTEM INTEGRATION - THE V DIAGRAM
MISSION REQUIREMENTS
USER EVALUATION
UAV SYSTEM
AIR VEHICLE
CNG SYSTEM
MISSION COMPUTER
PROCESSOR BOARD
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SYSTEM REALISATION ISSUES
SYSTEM

• AVAILABLE LEVELS OF
• EXPERTISE
• TECHNOLOGIES
• ENGINEERING
• INFRASTRUCTURE
• FUNDS

SUBSYSTEM 2
SUBSYSTEM 3
SUBSYSTEM 1
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SYSTEM HOUSE
ROADMAP FOR DEVELOPMENT OF SYSTEMS
SYSTEM
SYSTEM
CAPABILITY
CAPABILITIES
SYSTEM
CAPABILITIES
CAPABILITIES
TIME
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THANK YOU