DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited F-35 Joint Strike Fighter Structural Prognostics and Health Management An Overview Tim Fallon - JSF Program Office Devinder Mahal - JSF Program Office Iain Hebden – BAE Systems 2009 ICAF Conference Rotterdam .
Air Vehicle Service Life Ninety percent of all delivered JSF Air Vehicles, by variant, shall achieve either 30 years of operation or 8000 flight hours DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited 2
Structural Prognostics and Health Management (SPHM) 3 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Overview � Enterprise Health Management � SPHM Goals � System Overview � Air Vehicle � Off Board � Fleet Management 4 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) PHM … a design attribute of a JSF JSF is committed to reducing O&S costs – Legacy is unaffordable! R&D R&D R&D R&D and and and and Production Production Production Production O&S O&S O&S O&S TODAY TODAY JSF JSF JSF is committed to not doing business as usual A supportable and affordable next generation fighter needs…. • A Highly Supportable, State of the Art Prognostics and Health Management (PHM) System Lethal Survivable Supportable Affordable 5 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) PHM Architecture Air Vehicle Air Vehicle/Support System Auto Log & On-Board Health Assessment Interface Off-Board PHM Results In: Flight Critical Crash Fault NVM • Decision Support Recorder PVI Accommodation • Maintenance Planning Status via ICAWS • Condition-Based Maint. • Efficient Logistics Provides: Displays and Controls • AV-Level Info Mission Critical Management Portable Memory Device (PMD) • Intelligent FI PHM Area • Prognostics/Trends PHM Data AMD/PMD Managers • Auto. Logistics . Enabling/Interface Hosted in ICP Airframe In-Flight AVPHM Data Link Hosted in ICP ALIS • Automated Pilot/ Mission Systems Maint. Debrief • Off-Board Prognostics − Trending PMA − Life Mgmt Maintainer Vehicle Methods Used: • Intelligent Help Interface Maintenance Panel • Store/Distribute • Sensor Fusion Vehicle • Model-Based Reasoning PHM Information Systems • Tailored Algorithms • Systems Specific Fault/Service Info Logic / Rules Propulsion • Feature Extraction Database IETMs PHAM Consumables 6 On-Board Diagnostics DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) SPHM Goals • Minimize maintenance while maintaining safety • Eliminate scheduled inspections - Goal is on-condition maintenance • Achieve condition based maintenance at minimum cost • Individual aircraft tracking • Fully automated • Support structural prognostics • Minimize dedicated SPHM sensors • SPHM integral part of AVPHM and OBPHM • Capability to accept emerging technologies 7 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) SPHM Capabilities Air Vehicle SPHM Capability OBPHM SPHM Planned Capability • Recording of ‘raw’ PHM data • Individual Aircraft Tracking • Structural Events (Overloads) – Fatigue life consumption at selected critical locations. • Structural Usage Indices – Remaining life estimate for – Aircraft Parameters maintenance and operational – Control surface usage planning – Door usage – Corrosion prediction & tracking models – Landing data • Fleet management, lead aircraft, • Corrosion Environment Sensing identification of damaging manoeuvres. • Usage compared to design spectra • Flight event replay • Loads/Environment Spectra Survey (L/ESS) - PHM related data • Data mining – maintenance, repair, manufacturing history, usage indices 8 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) SPHM Functions • Operational Loads Measurement – Strain gage – Parametric models – Safe-Life and Damage Tolerant models • Structural Overload Measurement • Auxiliary Structural Data collection • Corrosion Environment Monitoring 9 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) SPHM Strain Sensor Locations (STOVL) LH Vertical Tail Shear Attachment Mirrored Locations SPHM Strain Sensor LH Aft Fuselage Actuator Lug Forward Fuse Canopy Sill LH Vertical Tail Bending Attachment LH Aft Fuselage Kicked Keel Centre Fuselage Bending Wing Root – LH Shear Wing Root – BH 496 Wing Root – LH Bending Flaperon Hinge Attach 10 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Strain Sensors • JSF philosophy – strain sensors are for model development, verification and refinement – All Strain Sensors are in baseline design and would require an engineering σ 2 change to remove them. Full Bending and Shear Bridges. • One side of aircraft instrumented σ 1 – Other side validated with loads aircraft instrumentation • Can be in difficult to access locations τ 1 – Primary and Backup gages – Will not be maintained – operate until they expire τ 2 • All aircraft will be tracked – primary means is parametric equations and dynamic models Tag Strip P+ P- S+ S- B Cable - Twisted Shielded pair Multi core Shielded Splice 11 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Strain Sensors • JSF philosophy – strain sensors are for model development, verification and refinement – All Strain Sensors are in baseline design and would require an engineering σ 2 change to remove them. Full Bending and Shear Bridges. • One side of aircraft instrumented σ 1 – Other side validated with loads aircraft instrumentation • Can be in difficult to access locations τ 1 – Primary and Backup gages – Will not be maintained – operate until they expire τ 2 • All aircraft will be tracked – primary means is parametric equations and dynamic models Tag Strip - + P Tension P+ P- Gauge 1 S+ S- B • Monitored and recorded at 320 Hz. Time Synched. Gauge 2 Compression 12 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensor 1 – LH Vertical Tail Attachment FS 575 Indicative Positions of Strain Gauges 13 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensor 2 – LH Vertical Tail Attachment FS 609 Primary Bridge Backup Bridge Indicative Positions of Strain Gauges Frame 609 LH Side – View Looking Inboard Frame 609 LH Side – View Looking Outboard backup primary primary backup 14 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensors 3 LH Aft Fuselage Kicked Keel – FS 625 Indicative Positions of Strain Gauges 15 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensors 4 LH Aft Fuselage Kicked Keel – FS 625 Indicative Positions of Strain Gauges UP Tag Strip AFT 16 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensors 5&6 – LH Wing Carry Thru Bulkhead 450 4 3 8 7 UP OUTBOARD 10 11 Tag 9 12 Strip 15 14 13 16 2 1 6 5 17 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensor 7 – LH Wing Rear Spar FS550 Indicative Positions of Strain Gauges 11 10 9 12 15 14 13 16 18 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensor 8 – RH Canopy Sill FS244 Indicative Position of Strain Gauges Canopy Sill Longeron, RH Canopy Latch Fitting View Looking Inbd and Up Primary at RHS (For Orientation Purposes) Backup UP FORWARDS 19 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) Sensor 9 – LH Wing Carry Thru Bulkhead 496 Sensor 9 Location 20 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Structural Prognostics and Health Management (SPHM) SPHM Sensor 10 - Centre Fuselage Bending 21 DISTRIBUTION STATEMENT A: Approved for Public Release: Distribution is Unlimited
Recommend
More recommend
