Ashok Gopalarathnam Narsipur, S., Ramesh, K., Gopalarathnam, A., & Edwards, J. R. (2023, May 31). Discrete vortex modeling of perching and hovering maneuvers. THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS. https://doi.org/10.1007/s00162-023-00653-2 Narsipur, S., & Gopalarathnam, A. (2023). Leading-Edge Suction Behavior of Unsteady Airfoils in Forward and Reverse Flows. JOURNAL OF THE AMERICAN HELICOPTER SOCIETY, 68(2). https://doi.org/10.4050/JAHS.68.022009 Hughes, M. T., Gopalarathnam, A., & Bryant, M. (2023, February 7). Modulation and Annihilation of Aeroelastic Limit-Cycle Oscillations Using a Variable-Frequency Disturbance Generator. AIAA JOURNAL. https://doi.org/10.2514/1.J062295 Jenkins, M., Babu, A. V. S., Bryant, M., & Gopalarathnam, A. (2023, October 31). Numerical Study of Circular-Cylinder Disturbance Generators with Rigid Splitter Plates. AIAA JOURNAL. https://doi.org/10.2514/1.J062729 Ramanathan, H., & Gopalarathnam, A. (2023, May 13). Prediction of leading-edge-vortex initiation using criticality of the boundary layer. THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS, Vol. 5. https://doi.org/10.1007/s00162-023-00648-z Suresh Babu, A. V., Narsipur, S., Bryant, M., & Gopalarathnam, A. (2022). Leading-edge-vortex tailoring on unsteady airfoils using an inverse aerodynamic approach. PHYSICS OF FLUIDS, 34(5). https://doi.org/10.1063/5.0090328 Narsipur, S., Gopalarathnam, A., & Edwards, J. R. (2022, September 7). Low-Order Modeling of Dynamic Stall on Airfoils in Incompressible Flow. AIAA JOURNAL. https://doi.org/10.2514/1.J061595 Loewenthal, E., & Gopalarathnam, A. (2022). Low-Order Modeling of Wingtip Vortices in a Vortex Lattice Method. AIAA JOURNAL, 60(3), 1708–1720. https://doi.org/10.2514/1.J060654 Aleman, M. A., Gopalarathnam, A., & Granlund, K. (2022, May 13). Novel Surface Flow-Reversal Sensor Applied to Detection of Airfoil Stall. JOURNAL OF AIRCRAFT, Vol. 5. https://doi.org/10.2514/1.C036732 Hirato, Y., Shen, M., Gopalarathnam, A., & Edwards, J. R. (2021). Flow criticality governs leading-edge-vortex initiation on finite wings in unsteady flow. JOURNAL OF FLUID MECHANICS, 910. https://doi.org/10.1017/jfm.2020.896 Saini, A., Narsipur, S., & Gopalarathnam, A. (2021). Leading-edge flow sensing for detection of vortex shedding from airfoils in unsteady flows. PHYSICS OF FLUIDS, 33(8). https://doi.org/10.1063/5.0060600 Hosangadi, P., & Gopalarathnam, A. (2021). Low-Order Method for Prediction of Separation and Stall on Unswept Wings. JOURNAL OF AIRCRAFT, 58(3), 420–435. https://doi.org/10.2514/1.C036027 SureshBabu, A. V., Medina, A., Rockwood, M., Bryant, M., & Gopalarathnam, A. (2021). Theoretical and experimental investigation of an unsteady airfoil in the presence of external flow disturbances. JOURNAL OF FLUID MECHANICS, 921. https://doi.org/10.1017/jfm.2021.484 Kirschmeier, B., Pash, G., Gianikos, Z., Medina, A., Gopalarathnam, A., & Bryant, M. (2020). Aeroelastic inverse: Estimation of aerodynamic loads during large amplitude limit cycle oscillations. JOURNAL OF FLUIDS AND STRUCTURES, 98. https://doi.org/10.1016/j.jfluidstructs.2020.103131 Kirschmeier, B. A., Gianikos, Z., Gopalarathnam, A., & Bryant, M. (2020). Amplitude Annihilation in Wake-Influenced Aeroelastic Limit-Cycle Oscillations. AIAA JOURNAL, 58(9), 4117–4127. https://doi.org/10.2514/1.J058942 Powers, T. C., Silverberg, L. M., & Gopalarathnam, A. (2020). Artificial Lumbered Flight for Autonomous Soaring. JOURNAL OF GUIDANCE CONTROL AND DYNAMICS, 43(3), 553–566. https://doi.org/10.2514/1.G004397 Gianikos, Z. N., Kirschmeier, B. A., Gopalarathnam, A., & Bryant, M. (2020). Limit cycle characterization of an aeroelastic wing in a bluff body wake. JOURNAL OF FLUIDS AND STRUCTURES, 95(0). https://doi.org/10.1016/j.jfluidstructs.2020.102986 Narsipur, S., Hosangadi, P., Gopalarathnam, A., & Edwards, J. R. (2020). Variation of leading-edge suction during stall for unsteady aerofoil motions. JOURNAL OF FLUID MECHANICS, 900. https://doi.org/10.1017/jfm.2020.467 Waghela, R., Yoder, C. D., Gopalarathnam, A., & Mazzoleni, A. P. (2019). Aerodynamic Sails for Passive Guidance of High-Altitude Balloons: Static-Stability and Equilibrium Performance. JOURNAL OF AIRCRAFT, 56(5), 1849–1857. https://doi.org/10.2514/1.C035353 Narsipur, S., Gopalarathnam, A., & Edwards, J. R. (2019). Low-Order Model for Prediction of Trailing-Edge Separation in Unsteady Flow. AIAA JOURNAL, 57(1), 191–207. https://doi.org/10.2514/1.J057132 SureshBabu, A. V., Ramesh, K., & Gopalarathnam, A. (2019, April). Model Reduction in Discrete-Vortex Methods for Unsteady Airfoil Flows. AIAA JOURNAL, Vol. 57, pp. 1409–1422. https://doi.org/10.2514/1.J057458 Hirato, Y., Shen, M., Gopalarathnam, A., & Edwards, J. R. (2019). Vortex-Sheet Representation of Leading-Edge Vortex Shedding from Finite Wings. JOURNAL OF AIRCRAFT, 56(4), 1626–1640. https://doi.org/10.2514/1.C035124 Saini, A., & Gopalarathnam, A. (2018). Leading-Edge Flow Sensing for Aerodynamic Parameter Estimation. AIAA JOURNAL, 56(12), 4706–4718. https://doi.org/10.2514/1.J057327 Ramesh, K., Granlund, K., Ol, M. V., Gopalarathnam, A., & Edwards, J. R. (2018). Leading-edge flow criticality as a governing factor in leading-edge vortex initiation in unsteady airfoil flows. THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS, 32(2), 109–136. https://doi.org/10.1007/s00162-017-0442-0 Frink, N. T., Murthy, P. C., Atkins, H. L., Viken, S. A., Petrilli, J. L., Gopalarathnam, A., & Paul, R. C. (2017, April). Computational Aerodynamic Modeling Tools for Aircraft Loss of Control. JOURNAL OF GUIDANCE CONTROL AND DYNAMICS, Vol. 40, pp. 789–803. https://doi.org/10.2514/1.g001736 Kim, T., Saini, A., Kim, J., Gopalarathnam, A., Zhu, Y., Palmieri, F. L., … Jiang, X. (2017). Piezoelectric Floating Element Shear Stress Sensor for the Wind Tunnel Flow Measurement. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 64(9), 7304–7312. https://doi.org/10.1109/tie.2016.2630670 Kim, T., Saini, A., Kim, J., Gopalarathnam, A., Zhu, Y., Palmieri, F. L., … Jiang, X. (2016). A piezoelectric shear stress sensor. SENSORS AND SMART STRUCTURES TECHNOLOGIES FOR CIVIL, MECHANICAL, AND AEROSPACE SYSTEMS 2016, Vol. 9803. https://doi.org/10.1117/12.2219185 Heinzen, S. B., Hall, C. E., Jr., & Gopalarathnam, A. (2015). Development and Testing of a Passive Variable-Pitch Propeller. Journal of Aircraft, 52(3), 748–763. https://doi.org/10.2514/1.c032595 Ramesh, K., Murua, J., & Gopalarathnam, A. (2015). Limit-cycle oscillations in unsteady flows dominated by intermittent leading-edge vortex shedding. Journal of Fluids and Structures, 55, 84–105. https://doi.org/10.1016/j.jfluidstructs.2015.02.005 Ramesh, K., Gopalarathnam, A., Granlund, K., Ol, M. V., & Edwards, J. R. (2014). Discrete-vortex method with novel shedding criterion for unsteady aerofoil flows with intermittent leading-edge vortex shedding. Journal of Fluid Mechanics, 751, 500–538. https://doi.org/10.1017/jfm.2014.297 Cusher, A. A., & Gopalarathnam, A. (2014). Drag reduction on aircraft configurations with adaptive lifting surfaces. Aerospace Science and Technology, 34, 35–44. https://doi.org/10.1016/j.ast.2014.01.012 Paul, R. C., & Gopalarathnam, A. (2014). Iteration schemes for rapid post-stall aerodynamic prediction of wings using a decambering approach. International Journal for Numerical Methods in Fluids, 76(4), 199–222. https://doi.org/10.1002/fld.3931 Ramesh, K., Gopalarathnam, A., Edwards, J. R., Ol, M. V., & Granlund, K. (2013). An unsteady airfoil theory applied to pitching motions validated against experiment and computation. Theoretical and Computational Fluid Dynamics, 27(6), 843–864. https://doi.org/10.1007/s00162-012-0292-8 Cusher, A. A., & Gopalarathnam, A. (2012). Drag Reduction Methodology for Adaptive Tailless Aircraft. Journal of Aircraft, 49(1), 161–172. https://doi.org/10.2514/1.c031454 Sriram, P. S., Gopalarathnam, A., & Misenheimer, A. (2012). High-Downforce Airfoil Design for Motorsports. SAE International Journal of Materials and Manufacturing, 5(2), 478–489. https://doi.org/10.4271/2012-01-1168 Johnston, J., & Gopalarathnam, A. (2012). Investigation of a bio-inspired lift-enhancing effector on a 2D airfoil. Bioinspiration & Biomimetics, 7(3), 036003. https://doi.org/10.1088/1748-3182/7/3/036003 McGowan, G. Z., Granlund, K., Ol, M. V., Gopalarathnam, A., & Edwards, J. R. (2011, July). Investigations of Lift-Based Pitch-Plunge Equivalence for Airfoils at Low Reynolds Numbers. AIAA JOURNAL, Vol. 49, pp. 1511–1524. https://doi.org/10.2514/1.j050924 Cox, C., Gopalarathnam, A., & Hall, C. E., Jr. (2010). Flight Test of Stable Automated Cruise Flap for an Adaptive Wing Aircraft. Journal of Aircraft, 47(4), 1178–1188. https://doi.org/10.2514/1.46789 Ol, M. V., Reeder, M., Fredberg, D., McGowan, G. Z., Gopalarathnam, A., & Edwards, J. R. (2009). Computation vs. Experiment for High-Frequency Low-Reynolds Number Airfoil Plunge. International Journal of Micro Air Vehicles, 1(2), 99–119. https://doi.org/10.1260/175682909789498279 Cox, C., Gopalarathnam, A., & Hall, C. E., Jr. (2009). Development of Stable Automated Cruise Flap for an Aircraft with Adaptive Wing. Journal of Aircraft, 46(1), 301–311. https://doi.org/10.2514/1.38684 Gopalarathnam, A., & Norris, R. K. (2009). Ideal Lift Distributions and Flap Angles for Adaptive Wings. Journal of Aircraft, 46(2), 562–571. https://doi.org/10.2514/1.38713 Mukherjee, R., & Gopalarathnam, A. (2006). Poststall Prediction of Multiple-Lifting-Surface Configurations Using a Decambering Approach. Journal of Aircraft, 43(3), 660–668. https://doi.org/10.2514/1.15149 King, R. M., & Gopalarathnam, A. (2005). Ideal aerodynamics of ground effect and formation flight. JOURNAL OF AIRCRAFT, Vol. 42, pp. 1188–1199. https://doi.org/10.2514/1.10942 Jepson, J. K., & Gopalarathnam, A. (2005). Incorporation of aircraft performance considerations in inverse airfoil design. JOURNAL OF AIRCRAFT, Vol. 42, pp. 199–207. https://doi.org/10.2514/1.5373 Jepson, J. K., & Gopalarathnam, A. (2005). Inverse design of adaptive airfoils with aircraft performance considerations. Journal of Aircraft, 42(6), 1622–1630. Gopalarathnam, A., Broughton, B. A., McGranahan, B. D., & Selig, M. S. (2003). Design of low Reynolds number airfoils with trips. JOURNAL OF AIRCRAFT, 40(4), 768–775. https://doi.org/10.2514/2.3157 Frazier, J. W., & Gopalarathnam, A. (2003). Optimum downwash behind wings in formation flight. JOURNAL OF AIRCRAFT, 40(4), 799–803. https://doi.org/10.2514/2.3162 McAvoy, C. W., & Gopalarathnam, A. (2002). Automated cruise flap for airfoil drag reduction over a large lift range. JOURNAL OF AIRCRAFT, 39(6), 981–988. https://doi.org/10.2514/2.3051 Gopalarathnam, A., & McAvoy, C. W. (2002). Effect of airfoil characteristics on aircraft performance. JOURNAL OF AIRCRAFT, 39(3), 427–433. https://doi.org/10.2514/2.2968 Gopalarathnam, A., & Selig, M. S. (2002). Hybrid inverse airfoil design method for complex three-dimensional lifting surfaces. JOURNAL OF AIRCRAFT, Vol. 39, pp. 409–417. https://doi.org/10.2514/2.2966 Mckay, N. J., & Gopalarathnam†, A. (2002). The Effects of Wing Aerodynamics on Race Vehicle Performance. SAE Technical Paper Series. Presented at the Motorsports Engineering Conference & Exhibition. https://doi.org/10.4271/2002-01-3294 Gopalarathnam, A., & Selig, M. S. (2001). Low-speed natural-laminar-flow airfoils: Case study in inverse airfoil design. JOURNAL OF AIRCRAFT, 38(1), 57–63. https://doi.org/10.2514/2.2734 Gopalarathnam, A., & Selig, M. S. (1998). Multipoint Inverse Method for Multielement Airfoil Design. Journal of Aircraft, 35(3), 398–404. https://doi.org/10.2514/2.2337