Denny Mrozinski

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Tech Assessment Process A Construct for
Simulation-Based RD Tools
Denny Mrozinski Air Vehicles Directorate Air
Force Research Laboratory
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Technology AssessmentOur Mission?
Support the Warfighter!!
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SBRD RoadmapOverall Objective
100
0
Manufacturing
Deployment
Concept Evolution
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Modeling, Simulation and Analysis Collaboration
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Technology Assessment OfficeVision and Mission
To quickly and accurately analyze and assess any
air vehicle we can imagine.
Accomplished Through
Fidelity
Relevance
Time
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The Modeling and Simulation Pyramid
Fidelity
Relevance
Measures of Outcome
Measures of Effectiveness
Time
Measures of Performance
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The Modeling and Simulation Pyramid
Structures
Aerodynamics
Integration
Controls
Physics-based analysis can increase fidelity of
technology assessments
Challenge Reduce the analysis time enable
hi-fidelity data more quickly
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The Modeling and Simulation Pyramid
VAs work with JSF demonstrated the value of
Mission / Engagement Simulation
Mission and campaign simulation demonstrate
relevance of system to the Warfighter
Challenge Demonstrate relevance of advanced
technology to the Warfighter
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The Modeling and Simulation Pyramid
IT Technology will enable integrated processes
and reduce time
Challenge Overcome process and cultural barriers
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Technology Assessment SensorCraft FY 2000 12
month in-house effort
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VA SensorCraft Tech AssessmentTrade Space
Analysis
FLOPS - Flight Optimization System RAM - Rapid
Aircraft Modeling HASC - High Angle of Attack
Stability and Control ASTROS - Automated
Structural Optimizations
Initial Concept
Sensor and Mission Rqmts
First Order Sizing (FLOPS)
Propulsion Engine Deck
Geometry Modeling (RAM/Unigraphics)
Radar Cross Section Analysis (Xpatch)
Performance Analysis (FLOPS)
Flight Controls Effectiveness (D-Six)
1st/2nd Order Aero Analysis (Vortex Lattice, CFD)
First Order Structures/Weights (NASTRAN/ASTROS)
Stability and Control Analysis (HASC)
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VA SensorCraft Tech AssessmentTrade Space
Analysis
Things to Consider
Structures
Aerodynamics

• Is 17,500 Lbs Enough Structure?
• Whats the Interaction Between Structure and
  Aerodynamics?

• Can We Attain an L/D 32?
• What Configuration Trades Can Be Made?

Performance
Stability and Control

• Can the Vehicle Be Optimally Trimmed?
• Are Unconventional Controls Required?

• How Does the Vehicle Perform in a Mission
  Simulation?

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VA SensorCraft Tech AssessmentThe Team
AFRL/VA
Aerospace Sciences Structures Controls Mission
Simulation
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VA SensorCraft Tech AssessmentThe Requirements

• Loiter 40-60 Hours_at_ 65kft
• Maintain Constant Target Tracking (360 deg
  Coverage)
• Track Moving Targets (X Band 30 x 1.5 With 30
  deg Minimum Sweep)
• Targets Under Trees (UHF 100 Dipole)
• 80 kW of Continuous Power 100kW Peak
• 30 deg Minimum Sweep Angle for X-Band.

VA ? 100 (Long Term) Solution Industry
Studies ? 80 90 (Near Term) Solutions
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VA SensorCraft Tech AssessmentTrade Space
Analysis
Aerodynamics
Basic Sizing Breguet
Propulsion
Weights
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VA SensorCraft Tech Assessment High Fidelity
Modeling
Experiment
Computational Fluids
Computational Structures
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VA SensorCraft Tech Assessment Signature Analysis
Relative Detection Range - Stealthy / Baseline
Signature Information Input to Mission Simulation
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SensorCraft Mission Scenario
Red Four or Six Ship
High Value Asset Attack (HVAA)
Two Blue Dedicated CAP (dropped from scenario)
Target
130 nm DCA 43 nm SE
Red GCI
Red SAMs
150 nm SE
Red Cruise Missiles Penetrate Blue Defense
SensorCraft Provide Situation Awareness to Blue
Blue Four Ship DCA Mission Destroy Red Cruise
Missiles, Defend SensorCraft Self
Escort Mission Destroy Target, Defend SensorCraft
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Technology Assessment OfficeTypical Tech
Assessment Info
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Technology Assessment OfficeTypical Tech
Assessment Info
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Technology Assessment OfficeLessons Learned

• Communication between team members and software
  was not seamless.
• Physically dislocated and non-networked team
  members.
• Analysis codes are not compatible.
• There is a strong need for a common geometry
  tool.
• We created 5 geometry models to accommodate 5
  different analysis tools.
• Connections between analysis and simulation are
  made by brute force
• We dont have the tools to provide a statistical
  technology assessment

It Takes Too Long!!
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Technology Assessment OfficeFixing the Problem

• Investigate how the the big three and the
  automotive industry use technology assessment and
  simulation.
• Investigate current commercial solutions
• Seek a funding source

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What Industry is Doing
Automated Processes
ModelCenter iSIGHT
Design of Exp Response Surface Models Probabilisti
c Methods
Perform Trade Studies
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Simulation-Based RD IPTPreliminary Results
AFRL/VA-PR, ASC/EN, UDRI, Boeing, Lockheed,
Software Vendors
Ideal Future State
TOOLS

• Highly Integrated Tools Models
• Intuitive Familiar User Interfaces
• Data Mgmt Repository
• Advanced Modeling Techniques

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Technology Assessment OfficeReplace this.
Islands of Isolation
Industry Analysis Processes
Simulation Processes (VACD/SimAF)
Weights Low Speed Aero Performance
Geometry
Geometry
Stability and Control
Geometry
RCS
High Fidelity Tools Cobalt, MDICE, others
Geometry
AML Processes (Structures RMLS - VASD)
Geometry
ASC/EN Analysis Processes
PR Analysis Processes
Email - J drive
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Technology Assessment OfficeWith This
Islands of Automation
Common Database
Common Analysis Environment - iSIGHT/MC (Conceptua
l Methods VAAA)
Unified Geometry (AML and Unigraphics)
AML Processes (Structures RMLS - VASD)
Modelogics Processes (Subsystems - PRTA)
Simulation Processes (VACD/SimAF)
External Tools (ASC/ENFD)
ModelCenter Processes (Boeing/L-M)
Research Tools Cobalt, MDICE, others
Web Project Rooms
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Technology Assessment OfficeOne Step Further
Comprehensive Analysis
Common Database
Common Analysis Environment - iSIGHT/MC (Conceptua
l Methods VAAA)
Unified Geometry (AML and Unigraphics)
R response xi design variable b0
intercept a, b, c coefficients
PLUS Probabilistic Techniques (Monte Carlo)
Web Project Rooms
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Technology Assessment OfficeStatistical
Decision-Making
Response Surface Model
Responses
Cumulative Density Functions
CONFIDENCE
Variables
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Technology Assessment OfficeOptimization
Robust/Reliability Design (Quality Engineering)
Y2
Search for solution Optimization (Approximations
)
Constraint Boundary
DOE Identify Critical Factors And Initial Design
Feasible Infeasible (safe) (failed)
X2
Initial Design
More Robust 6-Sigma Reliability
Y1
X1
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SensorCraft Simulation-based RDCollaborative
Activities

• Universities
• Purdue Endowed Chair in Computational Methods
  and Design Optimization
• GA Tech Technology Assessment Methods
• AFIT Systems Engineering Center
• Industry
• Boeing on-site for 4 months
• Boeing and LMAS members if SBRD IPT
• Other
• SBRD IPT AFRL/VA PR, UDRI, Boeing, LMAS,
  Software Vendors
• Discussions with OAI and WBI
• Accelerated Capability, Development, and
  Delivery Senior Tech Team

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SensorCraft Simulation-based RD FY03
Investment
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The Modeling and Simulation Pyramid An Air
Vehicles Perspective
Accelerated Tech Development
Campaign
Warfighter
Technology Investment Planning
Mission Simulation
Analytical Certification
Unified Geom Common Env
Rapid Prototyping (Experimental)
Baseline Analysis ASC/EN
AFRL Industry Technology
Customer Requirements
WBI will help AFRL implement the MS pyramid
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Summary

• Cant afford business as usual (deterministic
  analysis,
• isolated processes, protecting the castle)

• There is no silver bullet

• Collaboration is key (people and tools)

• Leverage COTS tools make vendors our partner