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A1 Integrated system performance through novel propulsion–airframe integration
A2 Aerodynamic performance improvement through transition, boundary layer, and separation control
A3 Novel aerodynamic configurations that enable high performance and/or flexible multi-mission aircraft
A4a Aerodynamic designs and flow control schemes to reduce aircraft and rotor noise
A4b Accuracy of prediction of aerodynamic performance of complex 3-D configurations, including improved boundary layer transition and turbulence models and associated design tools
A6 Aerodynamics robust to atmospheric disturbances and adverse weather conditions, including icing
A7a Aerodynamic configurations to leverage advantages of formation flying
A7b Accuracy of wake vortex prediction, and vortex detection and mitigation techniques
A9 Aerodynamic performance for V/STOL and ESTOL, including adequate control power
A10 Techniques for reducing/mitigating sonic boom through novel aircraft shaping
A11 Robust and efficient multidisciplinary design tools
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B1a Quiet propulsion systems
B1b Ultraclean gas turbine combustors to reduce gaseous and particulate emissions in all flight segments
B3 Intelligent engines and mechanical power systems capable of self-diagnosis and reconfiguration between shop visits
B4 Improved propulsion system fuel economy
B5 Propulsion systems for short takeoff and vertical lift
B6a Variable-cycle engines to expand the operating envelope
B6b Integrated power and thermal management systems
B8 Propulsion systems for supersonic flight
B9 High-reliability, high-performance, and high-power-density aircraft electric power systems
B10 Combined-cycle hypersonic propulsion systems with mode transition
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C1 Integrated vehicle health management
C2 Adaptive materials and morphing structures
C3 Multidisciplinary analysis, design, and optimization
C4 Next-generation polymers and composites
C5 Noise prediction and suppression
C6a Innovative high-temperature metals and environmental coatings
C6b Innovative load suppression, and vibration and aeromechanical stability control
C8 Structural innovations for high-speed rotorcraft
C9 High-temperature ceramics and coatings
C10 Multifunctional materials
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D1 Advanced guidance systems
D2 Distributed decision making, decision making under uncertainty, and flight-path planning and prediction
D3 Aerodynamics and vehicle dynamics via closed-loop flow control
D4 Intelligent and adaptive flight control techniques
D5 Fault-tolerant and integrated vehicle health management systems
D6 Improved onboard weather systems and tools
D7 Advanced communication, navigation, and surveillance technology
D8 Human–machine integration
D9 Synthetic and enhanced vision systems
D10 Safe operation of unmanned air vehicles in the national airspace
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E1 Methodologies, tools, and simulation and modeling capabilities to design and evaluate complex interactive systems
E2 New concepts and methods of separating, spacing, and sequencing aircraft
E3 Appropriate roles of humans and automated systems for separation assurance, including the feasibility and merits of highly automated separation assurance systems
E4 Affordable new sensors, system technologies, and procedures to improve the prediction and measurement of wake turbulence
E5 Interfaces that ensure effective information sharing and coordination among ground-based and airborne human and machine agents
E6 Vulnerability analysis as an integral element in the architecture design and simulations of the air transportation system
E7 Adaptive ATMatechniques to minimize the impact of weather by taking better advantage of improved probabilistic forecasts
E8a Transparent and collaborative decision support systems
E8b Using operational and maintenance data to assess leading indicators of safety
E8c Interfaces and procedures that support human operators in effective task and attention management
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