All Stories

  1. Battery Evaluation Profiles for X-57 and Future Urban Electric Aircraft

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Dustin Hall, Justin S Gray

  2. Coupled Aeropropulsive Optimization of a Three-Dimensional Boundary-Layer Ingestion Propulsor Considering Inlet Distortion

    Article • Journal of Aircraft, July 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  3. Multidisciplinary Design Optimization Framework with Coupled Derivative Computation for Hybrid Aircraft

    Article • Journal of Aircraft, July 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Alessandro Sgueglia, Justin S Gray

  4. Blade and Trajectory Optimization of a Propeller -Driven Electric Aircraft with Acoustic Constraints

    Article • June 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  5. Multidisciplinary Optimization of an Electric Quadrotor Urban Air Mobility Aircraft

    Article • June 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray, Jeffrey Chin, Dustin Hall

  6. Monolithic Approach for Next-Generation Aircraft Design Considering Airline Operations and Economics

    Article • Journal of Aircraft, July 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  7. Multidisciplinary Optimization of a Turboelectric Tiltwing Urban Air Mobility Aircraft

    Article • June 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray, Jeffrey Chin

  8. Using Graph Coloring To Compute Total Derivatives More Efficiently in OpenMDAO

    Article • June 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  9. Aeropropulsive Design Optimization of a Boundary Layer Ingestion System

    Article • June 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  10. How Certain Physical Considerations Impact Aerostructural Wing Optimization

    Article • June 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  11. A Mixed Integer Efficient Global Optimization Algorithm with Multiple Infill Strategy - Applied to a Wing Topology Optimization Problem

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  12. Beaconless Optical Communication System Constraints

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  13. Gradient-Based Propeller Optimization with Acoustic Constraints

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray, Dr Leonard V Lopes

  14. Optimal Control within the Context of Multidisciplinary Design, Analysis, and Optimization

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  15. Battery Performance Modeling on SCEPTOR X-57 Subject to Thermal and Transient Considerations

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Justin S Gray

  16. Multipoint Variable Cycle Engine Design Using Gradient-Based Optimization

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  17. Coupled aeropropulsive design optimisation of a boundary-layer ingestion propulsor

    Article • The Aeronautical Journal, October 2018, Cambridge University Press

    Justin S Gray

  18. Aero-propulsive Design Optimization of a Turboelectric Boundary Layer Ingestion Propulsion System

    Article • June 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  19. Modeling Boundary Layer Ingestion Using a Coupled Aeropropulsive Analysis

    Article • Journal of Aircraft, May 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  20. Chemical-Equilibrium Analysis with Adjoint Derivatives for Propulsion Cycle Analysis

    Article • Journal of Propulsion and Power, September 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Justin S Gray

  21. Simultaneous Propulsion System and Trajectory Optimization

    Article • June 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  22. Trajectory Optimization of Electric Aircraft Subject to Subsystem Thermal Constraints

    Article • June 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Justin S Gray

  23. Approach to Modeling Boundary Layer Ingestion using a Fully Coupled Propulsion-RANS Model

    Article • January 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  24. A Mixed Integer Efficient Global Optimization Algorithm for the Simultaneous Aircraft Allocation-Mission-Design Problem

    Article • January 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  25. Conceptual Sizing and Feasibility Study for a Magnetic Plane Concept

    Article • January 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Justin S Gray

  26. Optimization of Turbine Engine Cycle Analysis with Analytic Derivatives

    Article • June 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Justin S Gray

  27. Parallel Aircraft Trajectory Optimization with Analytic Derivatives

    Article • June 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  28. Thermodynamics For Gas Turbine Cycles With Analytic Derivatives in OpenMDAO

    Article • January 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Justin S Gray

  29. Kona: A Parallel Optimization Library for Engineering-Design Problems

    Article • January 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  30. Aerodynamic Shape Optimization of a Two-Stream Supersonic Plug Nozzle

    Article • January 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  31. A modular adjoint approach to aircraft mission analysis and optimization

    Article • January 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  32. Hyperloop Feasibility Study

    Article • January 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Jeffrey Chin, Justin S Gray, Jeff Berton

  33. Design Optimization of a Variable-Speed Power-Turbine

    Article • July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray

  34. Automatic Evaluation of Multidisciplinary Derivatives Using a Graph-Based Problem Formulation in OpenMDAO

    Article • June 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Justin S Gray, Dr Andrew Ning