Ashok Gopalarathnam

Professor

  • 919-515-5669
  • Engineering Building III (EB3) 3256
  • Visit My Website

Dr. Gopalarathnam directs the NCSU Applied Aerodynamics Group. Dr. Gopalarathnam (referred to by his students as Dr. G) is committed to the development of innovative and useful ideas, concepts, and methodologies for the design of aircraft, other types of vehicles, and for alternative-energy systems. He is interested in applied aerodynamics, flight mechanics, aircraft design, adaptive aircraft, and design methodologies.

At the graduate level, Dr. G teaches Airfoil Theory (MAE 551) and Wing Theory (MAE 561). In these courses, the students look beyond theoretical methods in aerodynamics and address practical requirements in the design of airfoils and wings. At the undergraduate level, Dr. G teaches Aerodynamics of V/STOL vehicles (MAE 452) and Flight Vehicle Stability and Control (MAE 462). In MAE 462, his students do team projects in which they design/build/fly micro-gliders.

The graduate students who work with Dr. G are motivated and have an interest in flight and aerodynamics. During their studies, they are exposed to a mixture of theoretical, experimental, and computational methods applied to the design of a wide range of aero-hydrodynamic systems. His students work on sail boats, race cars, aircraft, and wind turbines, to name a few.

Outside of work, Dr. G spends time with his family and enjoys recreational flying when time permits.

Education

Ph.D. 1999

Aeronautical and Astronautical Engineering

University of Illinois at Urbana-Champaign

M.S. 1993

Aerospace Engineering

Indian Institute of Technology, Madras

B. Tech. 1989

Aerospace Engineering

Indian Institute of Technology, Madras

Research Description

Dr. Gopalarathnam is presently 1) developing adaptive aerodynamics for morphing aircraft, 2) developing aerodynamic prediction techniques for flight dynamics simulations, and 3) studying unsteady and post-stall aerodynamics of aircraft, helicopters, micro-aerial vehicles, and flight in nature. In MAE, Dr. G works with Dr. Edwards, Dr. Wu, and Dr. Peters.

Publications

Piezoelectric floating element shear stress sensor for the wind tunnel flow measurement
Kim, T., Saini, A., Kim, J., Gopalarathnam, A., Zhu, Y., Palmieri, F. L., Wohl, C. J., & Jiang, X. N. (2017), IEEE Transactions on Industrial Electronics, 64(9), 7304-7312.
Computational aerodynamic modeling tools for aircraft loss of control
Frink, N. T., Murthy, P. C., Atkins, H. L., Viken, S. A., Petrilli, J. L., Gopalarathnam, A., & Paul, R. C. (2017), Journal of Guidance Control and Dynamics, 40(4), 789-803.
A piezoelectric shear stress sensor
Kim, T., Saini, A., Kim, J., Gopalarathnam, A., Zhu, Y., Palmieri, F. L., Wohl, C. J., & Jiang, X. N. (2016), In Sensors and smart structures technologies for civil, mechanical, and aerospace systems 2016. (Proceedings of SPIE-the International Society for Optical Engineering, 9803).
Limit-cycle oscillations in unsteady flows dominated by intermittent leading-edge vortex shedding
Ramesh, K., Murua, J., & Gopalarathnam, A. (2015), Journal of Fluids and Structures, 55, 84-105.
Development and testing of a passive variable-pitch propeller
Heinzen, S. B., Hall, C. E., & Gopalarathnam, A. (2015), Journal of Aircraft, 52(3), 748-763.
Discrete-vortex method with novel shedding criterion for unsteady aerofoil flows with intermittent leading-edge vortex shedding
Ramesh, K., Gopalarathnam, A., Granlund, K., Ol, M. & Edwards, J. (2014), Journal of Fluid Mechanics, 751.
Iteration schemes for rapid post-stall aerodynamic prediction of wings using a decambering approach
Paul, R. C., & Gopalarathnam, A. (2014), International Journal for Numerical Methods in Fluids, 76(4), 199-222.
Discrete-vortex method with novel shedding criterion for unsteady aerofoil flows with intermittent leading-edge vortex shedding
Ramesh, K., Gopalarathnam, A., Granlund, K., Ol, M. V., & Edwards, J. R. (2014), Journal of Fluid Mechanics, 751, 500-538.
Drag reduction on aircraft configurations with adaptive lifting surfaces
Cusher, A. A., & Gopalrathnam, A. (2014), Aerospace Science and Technology, 34, 35-44.
An unsteady airfoil theory applied to pitching motions validated against experiment and computation
Ramesh, K., Gopalarathnam, A., Edwards, J. R., Ol, M. V., & Granlund, K. (2013), Theoretical and Computational Fluid Dynamics, 27(6), 843-864.

View all publications via NC State Libraries

Grants

Aerodynamic and Aeroelastic Behavior of Wings in the Presence of Upstream Vortical and Viscous Disturbances
US Air Force - Office of Scientific Research (AFOSR)(7/01/17 - 6/30/18)
Aerodynamic Modeling of Aerial Refueling Tanker and Receiver Interactions
US Navy(6/02/16 - 8/28/17)
CFD and Experimental Studies to Aid Development of Low-Order Aerodynamic Prediction Methods for Post-Stall Flight
National Aeronautics & Space Administration (NASA)(1/01/16 - 9/15/17)
Angelfish: Initial Planning and Project Management
Defense Advanced Research Projects Agency (DARPA)(6/19/14 - 1/31/16)
Evaluation of Flexible Micropost Arrays for Shear Stress Measurement
National Aeronautics & Space Administration (NASA)(7/10/14 - 7/09/16)
Aerodynamic Sensing using Miniature Transducers
General Electric Co.(3/01/13 - 12/31/13)
Harnessing Fluid-Structure Interaction in Wind Power and Sustainable Air Transport
University Global Partnership Network (UGPN)(3/01/13 - 2/28/14)
Theoretical and Computational Modeling of Two-Dimensional and Three-Dimensional Dynamic Stall for Rotorcraft Applications
US Army - Army Research Office(3/15/13 - 12/31/16)
Theory, Computation and Experiment on Criticality and Stability of Vortices Separating From Edges
US Air Force - Office of Scientific Research (AFOSR)(4/15/13 - 4/15/16)
CFD Studies to Aid Development of Low-Order Aerodynamic Prediction Methods for Post-Stall Flight
National Aeronautics & Space Administration (NASA)(1/01/12 - 12/31/15)