At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and...
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![Page 1: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/1.jpg)
Controls and Dynamics Branch at Lewis FieldGlenn Research Center
Propulsion Controls and Diagnostics Research at NASA GRC – Status Report
Dr. Sanjay GargBranch Chief
Ph: (216) 433-2685FAX: (216) 433-8990
email: [email protected]://www.lerc.nasa.gov/WWW/cdtb
Presented at: Aerospace Guidance and Control System Committee MeetingBoulder, CO, March 1, 2007
![Page 2: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/2.jpg)
Aeronautics Research Mission Directorate
Hypersonics
Fundamental Aeronautics Program
Aviation Safety Program
Airspace Systems Program
Supersonics
Subsonic Fixed Wing
Subsonic Rotary Wing
Integrated VehicleHealth
Management
Next Generation
AirTransportation
System
Super-DensitySurface
Management
Integrated Resilient Aircraft Control
Integrated Flight Deck
TechnologiesAging
Aircraft
NASA Aeronautics’ Program Structure
![Page 3: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/3.jpg)
Controls and Dynamics Branch at Lewis FieldGlenn Research Center
Propulsion Control for Fundamental Aeronautics
Fundamental Aeronautics Program
HypersonicsSupersonicsSubsonicFixed Wing
SubsonicRotary Wing
• Distributed Engine Control
• Active Flow Control for Compression Systems
• Unsteady Combustion / Ejection Systems
• Integrated Engine and Transmission control
• Active Combustion Control
• Integrated inlet / engine control
• High Speed propulsion control and integration with flight control
• Mode Switch management
![Page 4: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/4.jpg)
Controls and Dynamics Branch at Lewis FieldGlenn Research Center
Propulsion Control and Diagnostics for Aviation Safety
Aviation Safety Program
AADIIFDIntegrated Vehicle Health Management
Integrated Resilient Aircraft Control
• Self awareness and prognosis of gas path, combustion, and overall engine state; fault-tolerant system architecture
• Gas Path health management
•…..
• Damage tolerance and design for extended envelope operation; onboard hazard effects assessment, mitigation and recovery
Propulsion HealthManagement
………
Resilient PropulsionControl
………
![Page 5: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/5.jpg)
CPU /Memory
Actuationelectronics
Sensorelectronics
Sensorelectronics
Actuationelectronics
Sensorelectronics
Actuationelectronics
Actuator_1
Sensor_1
Sensor_ j
Actuator_n
Sensor_2
Actuator_2
Communication
Power
BU
S
FADEC
Current Engine Control ArchitectureCurrent Engine Control Architecture• Centralized with each sensor/actuator directly connected to FADEC
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![Page 7: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/7.jpg)
Controls and Dynamics Branch at Lewis FieldGlenn Research Center
Centralized Engine ControlCentralized Engine Control
• Pros: – Works, reliable, well-understood, experience,
comfort level• Cons:
– Expensive, inflexible, in the future will become a limiting factor in engine performance
– Wire harness weight forces the FADEC to be co-located on the engine structure
– Co-located FADEC requires environmental hardening (thermal, mechanical) further increasing weight and cost.
– Complicates fault detection and isolation
![Page 8: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/8.jpg)
CPU /Memory
Actuator_1
Sensor_1
Sensor_ j
Actuator_n
Sensor_2
Actuator_2
Communication
Power
FADEC
Distributed Engine ControlDistributed Engine Control
Communication
Actuationelectronics
Sensorelectronics
Sensorelectronics
Actuationelectronics
Sensorelectronics
Actuationelectronics
BU
S
![Page 9: At Lewis Field Glenn Research Center Controls and Dynamics Branch Propulsion Controls and Diagnostics Research at NASA GRC – Status Report Dr. Sanjay Garg.](https://reader036.fdocuments.net/reader036/viewer/2022072017/56649f055503460f94c1950c/html5/thumbnails/9.jpg)
Controls and Dynamics Branch at Lewis FieldGlenn Research Center
Distributed Engine ControlDistributed Engine Control
• Topologies:– Star (point to point), Ring or bus (daisy chain)– Wired or wireless
• Pros: – Known to work well in other industries, much less
expensive (initial and overall cost), very flexible• Cons:
– Communication unknowns and deterministic behavior
– Overall increased complexity– Requires new technologies, i.e., high temperature
electronics