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James Gregory

  • Professor, Mechanical & Aerospace Engr
  • 201 W 19th Ave
    E405 Scott Lab
    Columbus, OH 43210
  • 614-292-5024

About

Dr. James W. Gregory is a Professor in the Department of Mechanical and Aerospace Engineering, and Director of the Aerospace Research Center at The Ohio State University. He received his doctorate and masters degrees in Aeronautics and Astronautics from Purdue University in 2005 and 2002, respectively. He received his Bachelor of Aerospace Engineering from Georgia Tech in 1999, graduating with highest honors. Dr. Gregory’s research interests lie in the field of unsteady wakes – with specific interests in rotorcraft aeromechanics, bluff body wake control, and development of advanced measurement techniques. His work focuses on understanding and controlling compressible dynamic stall of rotorcraft blades; flow control of wakes, targeting three-dimensional wake structures and their instabilities; and development of fast-response pressure-sensitive paint as a diagnostic for unsteady flows.  He is also active in Unmanned Aircraft Systems (drone) research, including flight testing of vehicle performance, systems integration studies, and robust flight of UAS in all weather conditions (wind and icing).  He serves as PI for Ohio State as a core member of the ASSURE FAA Center of Excellence on Integrating UAS in the National Airspace System.  Dr. Gregory also led a team of researchers and students to set world records for speed and distance for an autonomous drone in August 2017.  Funding for his work includes grants from ARO (Young Investigator Award), ARL, AFOSR, AFRL, FAA, NASA, Sikorsky, Honda R&D, and the Ohio Federal Research Network. His research has resulted in the Thomas Hawksley Gold Medal, a best paper award presented by the Institution of Mechanical Engineers; and the Alfred Gessow Award for co-author of the Best Paper at the 68th American Helicopter Society Forum. Dr. Gregory’s teaching innovations have led to the McCarthy Engineering Teaching Award, the Department of Aerospace Engineering Outstanding Professor Award, and the SAE Ralph Teetor Award. His work experience includes stints at the US Air Force Research Laboratory Air Vehicles Directorate, Delta Air Lines, NASA Glenn Research Center, Tohoku University in Japan, and as a Fulbright Scholar at the Technion in Israel. He has also served as a policy fellow at the National Academy of Engineering through the Christine Mirzayan Science & Technology Policy Fellowship. Before arriving at Ohio State, he completed a postdoctoral fellowship at the U.S. Air Force Academy, funded through the National Research Council Research Associateship Program. He is an instrument rated private pilot, with over 230 hours in single-engine aircraft, and one of the first holders of a remote pilot certificate.

Honors

  • 20160101

    Associate Fellow.

  • 20141201-20150501

    Fulbright Scholar.

  • 20110901-20140801

    ARO Young Investigator Award.

  • 20130801

    NASA Group Achievement Award - Advanced Experimental Measurements / Kiowa Warrior Team.

  • 20130401

    Outstanding Professor Award.

  • 20130401

    Lumley Research Award.

  • 20120601

    Alfred Gessow Award for Best Paper at the AHS Forum 68.

  • 20120201

    Indo-US Frontiers of Engineering Program.

  • 20120101

    Ground Test Technical Committee Outstanding Paper Award.

  • 20120101

    Ralph R. Teetor Educational Award.

  • 20110101

    McCarthy Engineering Teaching Award.

  • 20100101

    Outstanding Professor Award.

  • 20100101

    Ground Test Technical Committee Outstanding Paper Award.

  • 20090101

    Distinguished Undergraduate Research Mentor Award.

  • 20080101

    Kenneth Harris James Prize (Best Paper Award).

  • 20080101

    Thomas Hawksley Gold Medal (Best Paper Award).

  • 20080101

    Frontiers of Engineering Program.

  • 20060101

    Engineering Student of the Year.

  • 20060101

    Best Paper by a Young Presenter Award.

  • 20050101

    Sigma Xi Graduate Student Poster Competition- First Place in Engineering.

  • 20050101

    Orville and Wilbur Wright Graduate Award.

  • 20040101

    First Place Graduate Student.

  • 20030101

    Region III Student Paper Competition, First Place.

  • 20020101

    Outstanding Graduate Student Award.

  • 19960101

    Sigma Gamma Tau.

Books

  • Gregory, JW; Liu, T. "Introduction to Flight Testing of Light Aircraft and UAVs."
  • Journal Articles

    2018

    2017

    2016

    2015

    2014

    2013

    2012

    2011

    2009

    2008

    2007

    2006

    2005

    2002

    1999

    Presentations

    • "Characterization of Miniature Fluidic Oscillator Flowfields using Porous Pressure Sensitive Paint." 2001, Presented at ASME Fluids Engineering Division Summer Meeting,
    • "Time-Resolved Measurements with Pressure and Temperature-Sensitive Paints." 2004, Presented at Advanced Measurement Techniques for Aero Engines and Stationary Gas Turbines, VKI Lecture Series,
    • "Jet Interaction Studies in a Fluidic Oscillator." 2005, Presented at 58th Annual Meeting of the Division of Fluid Dynamics, American Physical Society,
    • "Pressure-Sensitive Paint for Unsteady Aerodynamic Measurements." 2005, Presented at AIAA Mid-Atlantic Region Mini Conference at the Johns Hopkins Applied Physics Lab,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2007, Presented at University of Maryland, Department of Aerospace Engineering,
    • "Bluff Body Wake Control using Spatially Distributed Plasma Forcing." 2009, Presented at From fast cars to slow flows over bluff bodies,
    • "Recent Developments in Unsteady Pressure-Sensitive Paint Methods." 2009, Presented at Sixth International Conference on Flow Dynamics,
    • "Unsteady Pressure Measurements with Porous Pressure-Sensitive Paint." 2010, Presented at Western Michigan University, Department of Mechanical and Aeronautical Engineering,
    • "Unsteady Pressure Measurements with Porous Pressure-Sensitive Paint." 2010, Presented at University of Notre Dame, Department of Aerospace and Mechanical Engineering,
    • "A Temperature Corrected Dual-Luminophore Pressure-Sensitive Paint System for Unsteady Pressure Measurements." 2011, Presented at AIAA Region III Student Conference,
    • "Effects of Spanwise-Modulated Blowing on the Cylinder." 2011, Presented at 64th Annual Meeting of the APS Division of Fluid Dynamics,
    • "Visualization of Internal Jet Mixing in a Fluidic Oscillator." 2004, Presented at 11th International Symposium on Flow Visualization,
    • "Unsteady Measurements with Pressure-Sensitive Paint: Recent Work at Purdue University." 2004, Presented at 21st Century Center of Excellence of Flow Dynamics Seminar,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2006, Presented at Center for Naval Analyses Corporation,
    • "Development of Fluidic Oscillators for Flow Control Applications." 2006, Presented at University of Toronto, Institute for Aerospace Studies,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2007, Presented at University of Tennessee, Mechanical, Aerospace, and Biomedical Engineering Department,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2007, Presented at Worcester Polytechnic Institute, Department of Mechanical Engineering,
    • "Gaseous Effects on Plasma Formation and Force Production of a Single DBD Plasma Actuator." 2007, Presented at 4th International Conference on Flow Dynamics,
    • "Plasma Actuators for Aerodynamic Flow Control." 2008,
    • "Circular Cylinder Wake Control using Spatially Distributed Plasma Forcing." 2008, Presented at 33rd Dayton-Cincinnati Aerospace Sciences Symposium,
    • "Development of Single-Shot Lifetime PSP Measurement Technique for Rotorcraft." 2010, Presented at 10th PSP Workshop,
    • "Porous Pressure Sensitive Paint for Unsteady Flow Fields." 2000, Presented at 8th Pressure Sensitive Paint Workshop,
    • "Unsteady Pressure Measurements in Turbomachinery Using Porous Pressure Sensitive Paint." 2002, Presented at 9th Pressure Sensitive Paint Workshop,
    • "Development of Fluidic Oscillators for Flow Control Applications." 2005, Presented at University of Michigan, School of Aerospace Engineering,
    • "Assessment of Noise Reduction Technologies for Civilian Aircraft." 2006, Presented at 61st Annual Meeting of the American Scientific Affiliation,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2007, Presented at The Ohio State University, Department of Aerospace Engineering,
    • "Investigation of Flow-Induced Vibrations on Side-View Mirrors." 2009, Presented at Sixth International Conference on Flow Dynamics,
    • "Effect of the Flow on Vibration Characteristics of Side-View Mirrors." 2010, Presented at 35th Dayton-Cincinnati Aerospace Sciences Symposium,
    • "Porous Pressure-Sensitive Paint for Measurement of Unsteady Pressures in Turbomachinery." 2003, Presented at AIAA Region III Student Conference,
    • "Nanorod Material Development for Fast Response Pressure-Sensitive Paint Applications." 2004, Presented at Great Lakes Photonics Symposium,
    • "Modulated High Frequency Fluidic Jets For Flow Control." 2005, Presented at International Conference on Jets, Wakes, and Separated Flows,
    • "Development of Fluidic Oscillators for Flow Control Applications." 2005, Presented at United States Air Force Academy, Department of Aeronautics,
    • "Development of Fluidic Oscillators for Flow Control Applications." 2005, Presented at Oklahoma State University, School of Mechanical and Aerospace Engineering,
    • "Drag Reduction on a Circular Cylinder using Spatially Distributed Forcing." 2007, Presented at 60th Annual Meeting of the Division of Fluid Dynamics, American Physical Society,
    • "Unsteady Surface Pressure Measurements On A Hemispherical Dome With Porous Pressure-Sensitive Paint." 2009, Presented at 34th Dayton-Cincinnati Aerospace Sciences Symposium,
    • "Visualization of Pulsed Vortex Generator Jets with Porous Pressure-Sensitive Paint." 2009, Presented at 34th Dayton-Cincinnati Aerospace Sciences Symposium,
    • "Unsteady Pressure Measurements with Porous Pressure-Sensitive Paint." 2010, Presented at Vanderbilt University, Department of Mechanical Engineering,
    • "Development of a Two Layer Dual-luminophore Pressure Sensitive Paint and its Applications in Unsteady Flow Field Measurements." 2010, Presented at 10th PSP Workshop,
    • "Jet Interactions in a Feedback-Free Fluidic Oscillator in the Transition Region." 2013, Presented at 66th Annual Meeting of the APS Division of Fluid Dynamics,
    • "Unsteady Structure of Three-Dimensional Stall Cells." 2013, Presented at 66th Annual Meeting of the APS Division of Fluid Dynamics,
    • "Unsteady Pressure Measurements on Rotor Blades using Porous Pressure-Sensitive Paint." 2014, Presented at Shanghai Jiao Tong University, Department of Mechanical Engineering,
    • "Application of Fast Pressure-Sensitive Paint to an Oscillating Wind Turbine Airfoil." 2015, Presented at North American Wind Energy Symposium,
    • "Active Flow Control at Ohio State: From Laboratory Basic Research to Flight Application." 2016, Presented at Active Flow Control for Naval Aviation Fixed Wing Aeromechanics Applications,
    • "Fast-Response Pressure-Sensitive Paint." 2016, Presented at 10th ABCM Spring School on Transition and Turbulence,
    • "The Influence of Spanwise Segmented Plasma Actuator Forcing on a Circular Cylinder Wake and the Selection of Optimum Wavelength." 2013, Presented at 66th Annual Meeting of the APS Division of Fluid Dynamics,
    • "UAS at The Ohio State University." 2014, Presented at Ohio UAS Conference,
    • "Fast-Response Pressure-Sensitive Paint." 2015, Presented at Tel Aviv University, Department of Mechanical Engineering,
    • "Fast-Response Pressure-Sensitive Paint." 2015, Presented at Ben-Gurion University of the Negev, Department of Mechanical Engineering,
    • "Scaling Considerations for Fluidic Oscillator Flow Control on the Square-Back Ahmed Vehicle Model." 2015, Presented at SAE World Congress and Exhibition,
    • "Iterative Blind Deconvolution Algorithm for Deblurring Single PSP Image of Rotating Surfaces." 2015, Presented at 68th Annual Meeting of the APS Division of Fluid Dynamics,
    • "Fast-Response Pressure-Sensitive Paint." 2016, Presented at Embry Riddle Aeronautical University, Department of Aerospace Engineering,
    • "Unsteady Pressure Measurements on Rotor Blades using Porous Pressure-Sensitive Paint." 2015, Presented at Georgia Institute of Technology, Department of Aerospace Engineering,
    • "Unsteady Pressure Measurements on Rotor Blades using Porous Pressure-Sensitive Paint." 2015, Presented at Technion - Israel Institute of Technology, Department of Mechanical Engineering,
    • "UAS Research at The Ohio State University." 2015, Presented at FBI / FAA Unmanned Systems Threat Symposium,
    • "Fast-Response Pressure-Sensitive Paint." 2016, Presented at University of Arizona, Department of Aerospace and Mechanical Engineering,
    • "Targeting of three-dimensional wake instabilities for bluff body flow control." 2013, Presented at University of Illinois Urbana-Champaign, Department of Aerospace Engineering,
    • "A Comparative Study of Spatially Modulated Forcing of Cylinder Wake with Segmented Plasma Actuators of Different Wavelengths." 2012, Presented at 65th Annual Meeting of the APS Division of Fluid Dynamics,
    • "Unsteady Pressure Measurements on Rotor Blades in Forward Flight using Porous Pressure-Sensitive Paint." 2014, Presented at University of Illinois Urbana-Champaign, Department of Aerospace Engineering,
    • "Time-Resolved Visualization of Gortler Vortices in a Pulsed Convex Wall Jet using Fast Pressure-Sensitive Paint." 2015, Presented at 68th Annual Meeting of the APS Division of Fluid Dynamics,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2007, Presented at United States Naval Academy, Mechanical Engineering Department,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2007, Presented at Middle East Technical University, Department of Aerospace Engineering,
    • "Unsteady Pressure Measurements with Porous Pressure-Sensitive Paint." 2009, Presented at Air Force Research Laboratory, Air Vehicles Directorate,
    • "Testing Capabilities for Transonic Flow Control." 2010, Presented at 5th AIAA Flow Control Conference,
    • "Pressure-Sensitive Paint for Unsteady Flow Measurements." 2003, Presented at Illinois Institute of Technology, Department of Mechanical, Materials, and Aerospace Engineering,
    • "Unsteady Aerodynamic Measurements with Pressure-Sensitive Paint." 2005, Presented at American University of Beirut, Department of Mechanical Engineering,
    • "Development of Fluidic Oscillators for Flow Control Applications." 2005, Presented at Georgia Institute of Technology, School of Aerospace Engineering,
    • "Development of Pressure-Sensitive Paint for Unsteady Measurements." 2006, Presented at University of Wyoming, Department of Mechanical Engineering,
    • "Development of Fluidic Oscillators for Flow Control Applications." 2006, Presented at Air Force Research Laboratory, Air Vehicles Directorate,
    • "Development of Fluidic Oscillators for Flow Control Applications." 2005, Presented at University of Notre Dame, Department of Aerospace and Mechanical Engineering,

    Papers in Proceedings

    2016

    • Metka, M*; Gregory, JW; McKillen, J "Investigation of Fluidic Oscillator Flow Control for Ground Vehicles." in Second International Conference in Numerical and Experimental Aerodynamics of Road Vehicles and Trains (Aerovehicles 2). (6 2016).

    2015

    • Pandey, A*; Gregory, JW "Step Response of Polymer/Ceramic Pressure Sensitive Paint." in 10th Pacific Symposium on Flow Visualization and Image Processing. (6 2015).

    2011

    • Liu, T, Montefort, J, Gregory, J, Palluconi, S, Crafton, J, and Fonov, S "Wing Deformation Measurements from Pressure Sensitive Paint ImagesUsing Videogrammetry." in Proceedings of the 41st AIAA Fluid Dynamics Conference and Exhibit. (1 2011).
    • Jensen, CD*, Gompertz, KA*, Peng, D*, Juliano, TJ*, Kumar, P*, Gregory, JW, Bons, JP "Unsteady Compressible Flow on a NACA 0021 Airfoil." in Proceedings of the 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. (1 2011).

    2010

    • Peng, D*, Gregory, JW, Crafton, JW, and Fonov, S "Development of a Two Layer Dual-luminophore Pressure Sensitive Paint and its Applications in Unsteady Flow Field Measurements." in Proceedings of the 27th AIAA Aerodynamic Measurement and Ground testing Conference. (1 2010).

    2009

    • Fang, S*, Disotell, K*, Gregory, JW, Semmelmayer, FC, and Guyton, RW "Unsteady Surface Pressure Measurements on a Hemispherical Dome With Porous Pressure-Sensitive Paint." in Proceedings of the 10th International Conference on Fluid Control, Measurements, and Visualization, FLUCOME 2009. (1 2009).

    2008

    • Huang, C, Gregory, JW, and Sullivan, JP "Pressure and Temperature Measurements of Supersonic Microjet Impingement." in Proceedings of the XXII International Conference of Theoretical and Applied Mechanics. (1 2008).

    2005

    • Raghu, S, Gregory, JW, and Sullivan, JP "Modulated High Frequency Fluidic Jets for Flow Control." in Proceedings of the International Conference on Jets, Wakes, and Separated Flows. (1 2005).

    2002

    • Sullivan, JP, Gregory, JW, Huang, CY, Sakaue, H "Flow Visualization of Applications of Luminescent Paints." in Proceedings of the 10th International Symposium on Flow Visualization. (8 2002).

    1997

    • Caradonna, F; Henley, E; Silva, M; Huang, S; Komerath, NM; Reddy, U; Mahalingam, R; Funk, R; Wong, O; Ames, R; Darden, L; Villareal, L; Gregory, J "An Experimental Study of a Rotor in Axial Flight." in AHS Technical Specialists' Meeting on Rotorcraft Acoustics and Aerodynamics. (10 1997).

    Unknown

    • Bhattacharya, S*; Gregory, JW "The Development of the Intermediate and Far Wake of a Circular Cylinder under the Action of Spatially and Temporally Modulated Plasma Forcing." in 51st AIAA Aerospace Sciences Meeting.
    • Gregory, JW; Juliano, TJ*; Disotell, KJ*; Peng, D*; Crafton, J; Komerath, NM "Assessing the Limits of Deconvolution-Based Algorithms for Deblurring PSP Images of Rotating Surfaces." in 51st AIAA Aerospace Sciences Meeting.

    Patents

    • Metka, ML, McKillen, J, and Gregory, JW. "Vehicle Aerodynamics Control System and Methods of Use and Manufacture Thereof."