STAL

Intro

The Separated and Transient Aerodynamics Laboratory (STAL) is an experimental laboratory in the Department of Mechanical and Aerospace Engineering at the University of California, Los Angeles. Our research focuses on unsteady, separated, and three-dimensional flows on low speed aircraft and lifting surfaces of all shapes and sizes. We perform experiments in wind and water to better understand the flow physics and vortex dynamics of these flows. For more of a focus on numerics, modeling, acoustics, machine learning, or data science in fluid mechanics, check out our friends and fellow unsteady aero supergroup members in the SOFIA and Taira laboratories.

People

Prof. Anya Jones
Originally from New Orleans, LA, Prof. Jones joined the UCLA Department of Mechanical and Aerospace Engineering in 2024 after 14 years on the Aerospace Engineering faculty at the University of Maryland (UMD). She earned her Ph.D. in experimental aerodynamics from the University of Cambridge, her S.M. from MIT in Aeronautics and Astronautics, and a dual B.S. from Rensselaer Polytechnic Institute in Aeronautical and Mechanical Engineering. In addition to running her lab, she teaches graduate and undergraduate courses in unsteady aerodynamics, incompressible aerodynamics, and fluid mechanics. Prof. Jones has been awarded the AFOSR Young Investigator Award, NSF CAREER Award, and the Presidential Early Career Award for Scientists and Engineers (PECASE). She has been a Fulbright Scholar at the Technion in Haifa, Israel, an Alexander von Humboldt Fellow at TU Braunschweig in Germany, a Visiting Professor at Tohoku University in Japan, and a Visiting Scientist at Istanbul Technical University in Turkey. She is an associate fellow of AIAA, an active member of APS DFD, and a long-time chair and participant in several NATO Science and Technology Organization task groups on gust response and unsteady aerodynamics.

Graduate Students

Zachary Cowger
Zach grew up in Ridgefield, Washington, before heading south to chase the sun and pursue higher education in Southern California. Inspired by a family legacy of engineering, he earned his B.S. in Mechanical Engineering from UCLA in 2024. He is currently pursuing his M.S. in Mechanical Engineering, with research centered on experimental investigations of the seam-shifted wake phenomenon over baseballs in UCLA’s wind tunnel facility. Outside the lab, Zach is a dedicated member of the UCLA Men’s Rowing team. He often starts his mornings on the water in Marina del Rey and ends his evenings perfecting his grilling skills in his backyard.

Henry Jones
Henry was born and raised outside of Austin, Texas. He had an early passion for all types of aircraft and the theory of flight. Eager to learn more, Henry studied Aerospace Engineering at UCLA with a focus in aeronautics. He will received his Bachelor's degree in the Spring of 2025 and is currently pursuing his Master's degree. To further his understanding of aerodynamics and contribute to the field of research, Henry joined the lab during his senior year of undergrad. In his free time, Henry enjoys hiking, road tripping, and rewatching the Lord of the Rings too often.

Mackenzie Ficke
Mackenzie was born in Long Beach, CA. She earned her B.S. in aerospace engineering at UCLA, and is currently working towards her M.S. in the same field with an emphasis on fluid dynamics. Outside of the lab, she works as a fastpitch softball pitching instructor. In her free time she enjoys surfing, crochet, and hiking!.

Undergraduate Students

Chris Orr
Chris grew up in Oxford, UK before coming to Los Angeles for undergrad at UCLA. Chris joined the lab to broaden his understanding of aerodynamics to include hands-on testing and to help contribute to the lab's research. He will receive his Bachelor's in Mechanical Engineering in Spring 2026 and plans to pursue post-graduate studies with a focus on aerodynamics, both computational and experimental. Outside of academic work, Chris is a lifelong Formula One fan, which first sparked his interest in aerodynamics and fluid mechanics. He can also often be found running the Santa Monica beach path training for his next marathon.

Nicholas Veracruz
Nick was born in Poughkeepsie, New York and moved to Saint Augustine, Florida when he was five years old. He is currently pursuing his Bachelor's degree in Aerospace Engineering, and plans to graduate with his B.S. and M.S. in June 2026. Nick has previously interned for SpaceX's Starship Payload team, and is currently an instructor for the introductory rockets class at UCLA. He intends to pursue a career in thermofluids and aerodynamics analysis. In his free time, Nick enjoys playing golf, volleyball, tennis, and binging movies he's seen already.

Alumni (UMD)

PhD

Antonios Gementzopoulos completed his Ph.D. at the end of 2024 and began a postdoc in the High-Speed Aerodynamics and Propulsion Laboratory at the University of Maryland.

Oliver Wild completed his Ph.D. at the end of 2024 and began working as an Aerodynamics Engineer at Lucid Motors in Newark, CA.

Girguis Sedky completed his Ph.D. in December of 2022 and began work as Postdoctoral Research Associate at Princeton University in January 2023.

Hülya Biler completed her Ph.D. in December of 2021 and moved to the University of Southampton in the UK to begin work as a Research Fellow in the Aeronautics and Astronautics.

Jonathan Lefebvre completed his Ph.D. in May of 2021 and began working as a Research Analyst in Future Vertical Lift at The Institute for Defense Analyses (IDA) in Alexandria, VA.

Luke Smith completed his Ph.D. in May of 2020 and accepted a position as an engineer in the Hydroacoustics and Propulsor Design branch of the Carderock Division of the Naval Surface Warfare Center in Maryland.

Field Manar completed his Ph.D. in January of 2018 and accepted a position as an engineer in the Hydroacoustics and Propulsor Design branch of the Carderock Division of the Naval Surface Warfare Center in Maryland.

Peter Mancini completed his Ph.D. in the fall of 2017 and began working as a Research Analyst in Cyber Systems at The Institute for Defense Analyses (IDA) in Alexandria, VA.

Gino Perrotta completed his Ph.D. in the fall of 2017 and moved to a postdoc position at The George Washington University in Washington, DC.

Andrew Lind completed his Ph.D. in 2015 and remained in the group as postdoc until 2017, when he began working as an Assistant Research Engineer at the Glenn L. Martin Wind Tunnel.

MS

Assaf Krupnik completed his M.S. in the spring of 2023 and began work as Flight Test Engineer at Boeing Commercial Airplanes in Seattle.

Alex Goldberg completed his M.S. in the spring of 2023 and began work as an aerodynamicist for Kaman Air Vehicles.

Zachary Smith completed his M.S. in May of 2018 and accepted a position as an engineer in helicopter dynamics at the Naval Air Systems Command (NAVAIR) in Patuxent River, Maryland.

Phil Kirk completed his M.S. in May of 2018 and accepted a position as a flight test engineer at the Naval Air Systems Command (NAVAIR) in Patuxent River, Maryland.

Nate Beals graduated in the spring of 2014 with his M.S. in Aerospace Engineering, “The Effect of Passive Deformation on the Lift Produced by a Rotating Hinged Wing” and accepted a job at the U.S. Army Research Laboratory in Aberdeen, MD.

Kristy Schlueter completed her M.S. in Aerospace Engineering from UMD in 2013, entitled “Analysis of Factors Affecting the Aerodynamics of Low Reynolds Number Rotating Wings.” She was awarded the NDSEG Fellowship in 2013 and moved on to pursue a Ph.D. at Caltech.

BS

Tak (Andy) Yeung completed his B.S. in the spring of 2024 and began his graduate studies at the University of Maryland.

Adina Fleisher completed her B.S. in the spring of 2023 and began her graduate studies at Princeton University.

Adina Fleisher completed his B.S. in the spring of 2023 and began his graduate studies at Lehigh University.

Nicholas Zhu graduated in the spring of 2019 with his B.S. in Aerospace Engineering and moved to Daytona Beach, FL to begin graduate school at Embry-Riddle.

Mohamed Nassif graduated in the spring of 2018 with his B.S. in Aerospace Engineering and moved to Atlanta, GA to begin graduate school at Georgia Tech.

Max Cassell graduated in the spring of 2016 with his B.S. in Aerospace Engineering and accepted a job at Toyon Research Corporation in Sterling, VA.

Ignacio Andreu graduated in the spring of 2016 with his B.S. in Aerospace Engineering and moved to Illinois continue his studies at the University of Illinois.

Hannah Spooner graduated in the spring of 2015 with her B.S. in Aerospace Engineering and moved to Wichita, KS to work on airframe design for Cessna.

Ryan Joyce graduated in the spring of 2015 with his B.S. in Aerospace Engineering and remained on campus to begin graduate school in the fall.

Mateusz Gabryszuk graduated in the spring of 2015 with his B.S. in Aerospace Engineering and remained in the department to begin graduate school in the fall.

Krista Cratty graduated in the spring of 2015 with her B.S. in Aerospace Engineering and moved to College Station, TX to begin graduate school at Texas A&M in the Department of Aerospace Engineering.

Michael Madden graduated in the spring of 2014 with his B.S. in Aerospace Engineering from UMD. His departmental honors thesis was entitled “Interactions between a Model Turbine and the Seafloor.” He has since moved on to work at NAVAIR in Pax River, MD, performing flight tests on the F35 Joint Strike Fighter.

Sarvesh Sethi graduated with his B.S. in Aerospace Engineering from UMD in the spring of 2014 and moved to Ann Arbor, MI to work for Vayu, a small company that designs and builds UAVs for healthcare supply chain management and post-disaster aid delivery.

Mark Glucksman-Glaser earned his B.S. in Aerospace Engineering from UMD in 2010 and M.S. in 2013, entitled “Effects of Model Scaling on Sediment Transport in Brownout.” He moved on to work for ISSI, supporting NAVAIR at Pax River, MD.

Sid Kolluru completed his B.S. in Aerospace Engineering in 2010 from UMD and his M.S., entitled “Unsteady Low Reynolds Number Aerodynamics of a Rotating Wing,” in 2012. He moved on to work in experimental aerodynamics for Bell Helicopter in Ft. Worth, TX.

Baozhu Zhang was an undergraduate research assistant and a Women in Engineering Research Fellow in 2011-2012. She completed her M.S. in systems engineering at UMD in the spring of 2014, and then moved on to work at AAI as a systems engineer in Cockeysbille, MD.

Oscar Alvarado, an undergraduate research assistant in 2011, completed his M.S. in the AeroSmart lab in 2013.

Research

Complex gust encounters

The flow disturbances and wind gusts that aircraft experience in flight are complex mixtures of many different types of flows. Traditionally, however, wind gusts are modeled as either continuous or discrete. Continuous gusts include things like atmospheric turbulence, while discrete gusts are larger scale coherent flow structures like vortices or updrafts. STAL has previously focused on extreme discrete transverse gust encounters, but we are currently looking to expand that work into the area of complex gusts where we will consider the effects of multiple types and scales of discrete and continuous gusts interacting with a wing simultaneously. Current efforts are focused on learning how to generate these types of gusts in a water channel, how to quantify and characterize these flows, and how a wing's response to these types of gusts differs from that of a two-dimensional discrete gust.

Baseball aerodynamics

Pitched baseballs experience aerodynamic forcing from a number of sources including flow separation on the downstream side of the ball and the Magnus effect due to the spin imparted by the pitcher. Previous work has suggested that the sewn seams on a baseball can act to trip the boundary layer, incite flow separation, or possibly trigger laminar separation bubbles, giving rise to a "seam-shifted wake." Each of these mechanisms has a different effect on the aerodynamic forcing and wake of the ball, suggesting that the orientation of the seams could, in some cases, significantly affect ball trajectory. We are currently working with a major league baseball team to visualize and quantify the effect of seam positioning and rotational axis on the flow separation and lift generation of a spinning baseball in a wind tunnel.

Extreme transverse gust encounters

Wings hit by very strong flow disturbances tend to experience large transients in lift, drag, and pitching moment. If the flow disturbance or wind gust is of the same order of magnitude as the flight speed of the vehicle, unsteady flow separation is likely to occur, resulting in the formation of a leading-edge vortex. We study the process of flow separation, vortex formation, shedding, and convection to better understand how unsteady forces are generated, how we can predict when flow separation occurs, and how we can reduce force transients for better aircraft performance in unsteady conditions.

Swept wing gust encounters

A swept wing gust encounter is an inherently three-dimensional flow because of the wing geometry and because a 2D gust will impact the wing at different points along the span at different times. We use three-dimensional Lagrangian particle tracking velocimetry to measure all three components of the velocity field over a section of the wing. Having acquired these data, it is possible to explore vorticity generation and transport and so study the development and coherence of the three-dimensional leading-edge vortex. Ongoing work aims to explore the effects of wing sweep angle on the underlying physics of flow separation and reattachment and evaluate how existing flow models might be applied to three-dimensional flows or what modifications are necessary to capture the dominant 3D effects.

Flow sensing and modeling

One of the biggest challenges in mitigating the effects of gust encounters lies in knowing when an impending gust will hit. To better sense and predict gust encounters we perform experiments on wings with embedded pressure sensors. Having acquired a complete set of time-resolved pressure measurements along the surface of the wing, it is possible to both compute the aerodynamic forces on the wing and to explore the relative importance of each sensor. Unsteady pressure data can then be used in combination with theoretical and data-driven models to help predict an impending gust encounter and to leverage our understanding of the underlying flow physics to improve these models.

Gust mitigation

One of the primary motivations for studying gust encounters is to find ways to reject gusts or mitigate their effects on aircraft. We explore different ways to apply flow control or enact vehicle maneuvers to reduce lift transients in extreme gust encounters. To do this, we must first understand the underlying mechanisms of force generation and what types of actuators or maneuvers might have the control authority and time response required. We then develop the necessary control laws and test these approaches in experiments and simulations.

Vortex breakdown

Vortex breakdown is a well-known phenomena that occurs when a vortex loses its coherent structure and "bursts" into something more chaotic. While this process has been studied for many years, new measurement techniques are making it possible quantify this process over the rapid time scales over which it occurs. Because the process is highly sensitive to flow conditions, measurement techniques must be nonintrusive but also capable of capturing fully three dimensional measurements very quickly. Recent experiments were inspired by the "blue whirl", a flame thought to be a form of vortex burst. In these experiments we studied the effect of heat addition on a non-combusting flow by measuring the three-dimensional velocity field within the core of a standing vortex.

Rotor aerodynamics

Much of our previous work on rotor aerodynamics has focused on the reverse flow region of a high advance ratio rotor, where the relative flow moves "backwards," from the conventionally sharp geometric trailing edge of the wing to the conventionally blunt geometric leading edge. When this occurs, flow tends to separate quickly, sometimes forming a strong reverse flow dynamic stall vortex that can give rise to large lift and pitching moment transients. To alleviate these transients, airfoils designed to accommodate reverse flow often have a blunt trailing edge in addition to the conventional blunt leading edge. Previous experiments have included time-resolved particle image velocimetry measurements on a Mach-scaled rotor as well as numerous smaller scale experiments in wind tunnels and towing tanks on pitching and swept blades in both forward and reverse flow.

Publications

Last updated July 2025

Selected Articles

1. Smith, L., Fukami, K., Sedky, G., Jones, A., and Taira, K. (2024). A Cyclic Perspective on Transient Gust Encounters Through the Lens of Persistent Homology. Journal of Fluid Mechanics, 980 (A18). Online January 2024. doi:10.1017/jfm.2024.16
2. Gementzopoulos, A., Sedky, G., and Jones, A. R. (2024). Role of Vorticity Distribution in the Rise and Fall of Lift During a Transverse Gust Encounter. Physical Review Fluids, 9(1). doi: 10.1103/PhysRevFluids.9.014701
3. Xu, X., Gementzopoulos, A., Sedky, G., Jones, A. R., and Lagor, F. D. (2023). Optimal Wing Maneuvers Design in a Transverse Gust Encounter Using Iterative Input-Output Optimization. Theoretical and Computational Fluid Dynamics, 37. doi: doi.org/10.1007/s00162-023-00659-w
4. Towne, A., Dawson, S. T. M., and Brès, G. A., Lozano-Durán, A., Saxton-Fox, T., Parthasarathy, A., Jones, A.R., Biler, H., Yeh, C.-A., Patel, H.D., and Taira, K. (2023). A Database for Reduced-Complexity Modeling of Fluid Flows. AIAA Journal. Online May 2023. doi: 10.2514/1.J062203
5. Sedky, G., Gementzopoulos, A., Lagor, F. D., and Jones, A. R. (2023). Experimental Mitigation of Large-Amplitude Transverse Gusts via Closed-Loop Pitch Control. Physical Review Fluids, 8(6). Online June 8, 2023. doi: 10.1103/PhysRevFluids.8.064701
6. Wild, O. D. and Jones, A. R. (2023). Vortex Identification and Quantification on Blunt Trailing-Edged Rotor Blades in Reverse Flow. AIAA Journal. Online April 2, 2023. doi: /10.2514/1.J062576
7. Gardner, T., Jones, A., Mulleners, K., Naughton, J., and Smith, M. (2023). Review of Rotating Wing Dynamic Stall: Experiments and Flow Control. Progress in Aerospace Sciences, 137. Online February 2023. doi: 10.1016/j.paerosci.2023.100887
8. Xu, X., Gementzopoulos, A., Sedky, G., Jones, A. R., and Lagor, F. D. (2023). Iterative Maneuver Optimization in a Transverse Gust Encounter. AIAA Journal, 61(5). Online February 2023. doi:10.2514/1.J062404
9. Mohamed, A., Marino, M., Watkins, S., Jaworski, J., and Jones, A. R. (2023). Gusts Encountered by Flying Vehicles in Proximity to Buildings. Drones, 7(1), 22. Online December 2022. doi: 10.3390/drones7010022
10. Sedky, G., Gementzopoulos, A., Andreu Angulo, I., Lagor, F. D., and Jones, A. R. (2022). Physics of Gust Response Mitigation in Open-Loop Pitching Maneuvers. Journal of Fluid Mechanics, 944(A38). Online July 2022. doi: 10.1017/jfm.2022.509
11. Sedky, G., Biler, H., and Jones, A. R. (2022). Experimental Comparison of a Sinusoidal and Trapezoidal Transverse Gust. AIAA Journal<, 60(5). Online January 11, 2022. doi: 10.2514/1.J061365
12. Badrya, C., Jones, A. R., and Baeder, J. D. (2022). Unsteady Aerodynamic Response of a Flat-Plate Encountering Large-Amplitude Sharp-Edged Gust. AIAA Journal, 60(3). Online September 28, 2021. doi: 10.2514/1.J060683.
13. Jones, A. R., Cetiner, O., and Smith, M. (2022, January). Physics and Modeling of Large Flow Disturbances: Discrete Gust Encounters for Modern Air Vehicles. Annual Review of Fluid Mechanics, 54. pp. 469–493. Online November 1, 2021. doi: 10.1146/annurev-fluid-031621-085520
14. Jones, A. R. and Cetiner, O. (2021). Unsteady Aerodynamics of Gust Encounters: Introduction to the Virtual Collection. AIAA Journal, 59 (3), pp. 764–764. doi: 10.2514/1.J060379
15. Jones, A. R. and Cetiner, O. (2021). Overview of Unsteady Aerodynamic Response of Rigid Wings in Gust Encounters. AIAA Journal, 59(2). AIAA Journal, 57(8), pp. 731–736. Online November 19, 2020. doi: 10.2514/1.J059602
16. Lidard, J. M., Goswami, D., Snyder, D., Sedky, G., Jones, A. R., and Paley, D. A. (2021). Feedback Control and Parameter Estimation for Lift Maximization of a Pitching Airfoil. Journal of Guidance, Control, and Dynamics, 44(3). pp. 587–594. Online January 11, 2021. doi: 10.2514/1.G005441
17. Biler, H., Sedky, G., Jones, A. R., Saritas, M., and Cetiner, O. (2021). Experimental Comparison of Transverse and Vortex Gust Encounters at Low Reynolds Numbers. AIAA Journal, 59(3), pp. 786–799. Online December 29, 2020. doi: 10.2514/1.J059658
18. Moriche, M., Sedky, G., Jones, A. R., Flores, O., and García-Villalba, M. (2021). Characterization of Aerodynamic Forces on Wings in Plunge Maneuvers. AIAA Journal, 59(2), pp. 751-762. Online December 1, 2020. doi: 10.2514/1.J059689
19. Badrya, C., Biler, H., Jones, A. R., and Baeder, J. (2021). The Effect of Gust Width on Flat-Plate Response in Large Transverse Gust at Low Reynolds Number. AIAA Journal, 59(1), pp 49–64. Online December 1, 2020. doi: 10.2514/1.J059678
20. Jones, A. R. (2020, November). Gust Encounters of Rigid Wings: Taming the Parameter Space (Invited). Physical Review Fluids, 5 (11). Online November 24, 2020. doi: 10.1103/PhysRevFluids.5.110513
21. Andreu Angulo, I., Babinsky, H., Biler, H., Sedky, G. and Jones, A. R. The Effect of Transverse Gust Velocity Profiles. (2020). AIAA Journal. Online October 31, 2020. doi: 10.2514/1.J059665
22. Smith, L. and Jones, A. R. (2020). Vortex Formation on a Pitching Aerofoil at High Surging Amplitudes. Journal of Fluid Mechanics, 905(A22). Online October 27, 2020. doi: 10.1017/jfm.2020.741
23. Mohamed, A., Watkins, S., Ol, M., and Jones, A. R. (2020). Flight-Relevant Gusts: Computation-Derived Guidelines for MAV Ground Test Unsteady Aerodynamics. Journal of Aircraft. Online October 8, 2020. doi: 10.2514/1.C035920
24. Sedky, G., Lagor, F. D., and Jones, A. R. (2020). Unsteady Aerodynamics of Lift Regulation during a Transverse Gust Encounter. Physical Review Fluids, 5 (7). Online July 1, 2020. doi: 10.1103/PhysRevFluids.5.074701
25. Sedky, G., Jones, A. R., and Lagor, F. D. (2020). Lift Regulation During Transverse Gust Encounters Using a Modified Goman Khrabrov Model. AIAA Journal, 58(9), pp. 3788–3798. Online April 30, 2020. doi: 10.2514/1.J059127
26. Smith, L., Jung, Y.-S., Baeder, J., and Jones, A. R. (2019). The Role of Rotary Motion on Vortices in Reverse Flow. Journal of Fluid Mechanics, 880, pp. 723–742. Online October 15, 2019. doi: 10.1017/jfm.2019.728
27. Biler, H., Badrya, C., and Jones, A. R. (2019). Experimental and Computational Investigation of Transverse Gust Encounters. AIAA Journal, 57 (11), pp. 4608–4622. Online July 25, 2019. doi: 10.2514/1.J057646
28. Badrya, C., Baeder, J., and Jones, A. R. (2019). Application of the Field Velocity Method to a Large-Amplitude Flat Plate Gust Encounter. AIAA Journal, 57 (8), pp. 3261–3273. Online June 24, 2019. doi: 10.2514/1.J057978
29. Gomez, D. F., Lagor, F. D., Kirk, P. B., Lind, A., Jones, A. R., and Paley, D. A. (2019). Data-Driven Estimation of the Unsteady Flowfield Near an Actuated Airfoil. Journal of Guidance, Control, and Dynamics, 42 (10), pp. 2279–2287. Online June 24, 2019. doi: 10.2514/1.G004339
30. Lefebvre, J. N. and Jones, A. R. (2019). Experimental Investigation of Airfoil Performance in the Wake of a Circular Cylinder. AIAA Journal, 57 (7), pp. 2808–2818. Online June 2, 2019. doi: 10.2514/1.J057468
31. Smith, L., Lind, A., and Jones, A. R. (2019). Measurements on a Yawed Model Rotor Blade Pitching in Reverse Flow. Physical Review Fluids, 4(3). doi: 10.1103/PhysRevFluids.4.034703
32. Manar, F. and Jones, A. R. (2019). An Evaluation of Potential Flow Models for Unsteady Separated Flow with Respect to Experimental Data. Physical Review Fluids, 4(3). doi: 10.1103/PhysRevFluids.4.034702
33. Mancini, P., Medina, A., and Jones, A. R. (2019). Experimental and Analyt- ical Investigation into Lift Prediction on Large Trailing Edge Flaps. Physics of Fluids, 31(1). doi: 10.1063/1.5063265
34. Eldredge, J. and Jones, A. R. (2019). Leading Edge Vortices: Mechanics and Modeling. Annual Review of Fluid Mechanics, 51, pp. 75-104. Accessible at
    http://www.annualreviews.org/eprint/KU8nGZH9bA6FAenxUUJ5/full/10.1146/annurev-fluid-010518-040334
35. Lind, A., Trollinger, L., Manar, F., Chopra, I. and Jones, A. R. (2018). Flowfield Measurements of Reverse Flow on a High Advance Ratio Rotor. Experiments in Fluids, 59(185). doi:10.1007/s00348-018-2638-5
36. Kirk, P. B. and Jones, A. R. (2018). Vortex Formation on Surging Aerofoils with Application to Reverse Flow Modelling. Journal of Fluid Mechanics, 859, pp. 59-88. doi:10.1017/jfm.2018.800
37. Perrotta, G. and Jones, A. R. (2018). Quasi-Steady Approximation of Forces on a Flat Plate Due to Large-Amplitude Plunging Maneuvers. AIAA Journal. doi:10.2514/1.J057194
38. Stevens, P. R. R. J., Babinsky, H., Manar, F., Mancini, P., Jones, A. R., Nakata, T., Phillips, N., Bomphrey, R. J., Gozukara, A. C., Granlund, K. O., and Ol, M. V. (2017). Experiments and Computations on the Lift of Accelerating Flat Pates at Incidence. AIAA Journal. doi: 10.2514/1.J055323
39. Manar, F. and Jones, A. R. (2017). Transient Response of a Single Degree-of-Freedom Wing at High Angle of Attack and Low Reynolds Number. AIAA Journal. doi: 10.2514/1.J055708
40. Perrotta, G. and Jones, A. R. (2017) Unsteady Forcing on a Flat Plate Wing in Large Transverse Gusts. Experiments in Fluids, 58, (101). doi: 10.1007/s00348-017-2385-z
41. Medina, A., Ol, M., Mancini, P., and Jones, A. R. (2017). Revisiting Conventional Flaps at High Deflection-Rate. AIAA Journal. doi: 10.2514/1.J055754
42. Mulleners, K., Mancini, P., and Jones, A. R. (2017). Flow Development on a Flat Plate Wing in a Stream-Wise Gust Encounter. AIAA Journal. doi: 10.2514/1.J051609
43. Medina, A. and Jones, A. R. (2016). Leading-Edge Vortex Burst on a Low Aspect Ratio Rotating Flat Plate. Physical Review Fluids, 1, (4). doi: 10.1103/PhysRevFluids.1.044501
44. Lind, A., Smith, L., Milluzzo, J., and Jones, A. R., (2016). Reynolds Number Effects on Rotor Blade Sections in Reverse Flow. Journal of Aircraft, 53,(5), pp. 1248–1260. doi: 10.2514/1.C033556
45. Lind, A. and Jones, A. R. (2016). Unsteady Aerodynamics of Reverse Flow Dynamic Stall on Oscillating Blade Sections. Physics of Fluids, 28(7). doi: 10.1063/1.4958334
46. Hodara, J., Lind, A., Jones, A. R., and Smith, M. (2016). Collaborative Investigation of the Aerodynamic Behavior of Airfoils in Reverse Flow. Journal of the American Helicopter Society, 61(3), pp. 1–15. doi: 10.4050/JAHS.61.032001
47. Lind, A., Smith, L., Milluzzo, J., and Jones, A. R., (2016). Reynolds Number Effects on Sharp and Blunt Trailing-Edged Rotor Blade Sections in Reverse Flow. Journal of Aircraft, 53(5), pp. 1248–1260. doi: 10.2514/1.C033556
48. Granlund, K., Ol., M., and Jones, A. R. (2016). Streamwise Oscillation of Airfoils into Reverse Flow. AIAA Journal, 54(5), pp. 1628–1636. doi: 10.2514/1.J054674
49. Mancini, P., Manar, F., Granlund, K., Ol, M., and Jones, A. R. (2015). Unsteady Aerodynamic Characteristics of a Translating Rigid Wing at Low Reynolds Number. Physics of Fluids, 27(2). doi: 10.1063/1.4936396
50. Manar, F., Mancini, P., Mayo, D. B., and Jones, A. R. (2015). A Comparison of Rotating and Translating Wings: Force Production and Vortex Characteristics. AIAA Journal, 2015, accessed December 1, 2015. doi: http://arc.aiaa.org/doi/abs/10.2514/1.J054422
51. Perrotta, G., Glucksman-Glaser, M., and Jones, A. R. (2015). Similarity Parameters for the Characterization of Sediment Mobilization by Unsteady Rotor Wakes. Journal of Aircraft, 52(6), pp. 2090-2095.
52. Lind, A. H. and Jones, A. R. (2015). Vortex Shedding from Airfoils in Reverse Flow. AIAA Journal, 53(9), pp. 2621-2633.
53. Mancini, P., Jones, A. R., Granlund, K., and Ol, M. (2015). Unsteady Aerodynamic Response of a Rapidly Started Flexible Wing. International Journal of Micro Air Vehicles, 7(2), pp. 147-157.
54. Beals, N. and Jones, A. R. (2015). Lift Production on a Passively Flexible Rotating Wing. AIAA Journal, 53(10), pp. 2995-3005.
55. Lind, A. H., Lefebvre, J., and Jones, A. R. (2014). Time-Averaged Aerodynamics of Sharp and Blunt Trailing Edge Static Airfoils in Reverse Flow. AIAA Journal, 52(12), pp. 2751-2761.
56. Lind, A. H., Jarugumilli, T., Benedict, M., Lakshminarayan, V. K., Jones, A. R., and Chopra, I. (2014). Flow Field Studies on a Micro Air Vehicle-Scale Cycloidal Rotor in Forward Flight. Experiments in Fluids, 55(12).
57. Manar, F., Medina, A., and Jones, A. R. (2014). Effect of Wall Proximity on Rotating Wings. Experiments in Fluids, 55(9), pp. 1-18.
58. Schlueter, K., Jones, A. R., Granlund, K., and Ol, M. (2014). Effect of Root Cutout on the Lift Produced by a Rotating Wing. AIAA Journal, 52(6), pp. 1322-1325.
59. Kolluru Venkata, S. and Jones, A. R. (2013). Leading Edge Vortex Structure over Multiple Revolutions of a Rotating Wing. AIAA Journal, 50(4), pp. 1312-1316.
60. Jones, A. R. and Babinsky, H. (2011). Reynolds Number Effects on Leading Edge Vortex Development on a Waving Wing. Experiments in Fluids, 51(1), pp. 197–210.
61. Jones, A. R., Pitt Ford, C. W., and Babinsky, H. (2011). Three-Dimensional Effects on Sliding and Waving Wings. Journal of Aircraft, 48(2), pp. 633–644.
62. Jones, A. R. and Babinsky, H. (2010). Unsteady Lift Generation on Rotating Wings at Low Reynolds Numbers. Journal of Aircraft, 47(3), pp. 1013–1021.
63. Hileman, J. I., Spakovszky, Z. S., Drela, M., Sargeant, M. A., and Jones, A. (2010). Airframe Design for Silent Fuel-Efficient Aircraft. Journal of Aircraft, 47(3), pp. 956–969.
64. Jones, A. R., Bakhtian, N. M., and Babinsky, H. (2008). Low Reynolds NumberAerodynamics of Leading-Edge Flaps. Journal of Aircraft, 45(1), pp. 342–345.

Join us

Graduate students

Dr. Jones hopes to accept 1-2 new PhD students to start in the 2026-2027 school year. Please see the department's information for prospective students here.

Many students email prospective advisors ahead of applying to inquire about graduate positions. This is not necessary, but if you choose to do so please make sure to include your CV and short descriptions of your background and areas of interest for your graduate research.

Post doctoral scholars

STAL is not currently able to fund post-doctoral scholars. If you have plans to apply for external funding and would like to discuss potential projects, please contact Dr. Jones directly.

Volunteer undergraduate research assistants

STAL is currently at capacity for the 2025-2026 school year and not accepting applications at this time. This may change in the winter or spring quarters, so check back closer to time if you're interested in starting work mid-year.

Our current research program is focused on wind tunnel experiments, flow modeling and simulations, and small-scale experiments in water. Volunteers participate in setting up and running lab equipment and experiments, data analysis and visualization, and/or applying known theoretical models for comparison with experimental results. This is a great opportunity to learn about all phases of experimental research and contribute to ongoing projects. The ideal volunteer will be organized, motivated, and ideally interested in exploring graduate-level fluid dynamics research in the future. Please note that we do not generally accept volunteers who can only commit to the summer. During the year, a minimum of 10 hours per week is required, and you must be able to make at least a three-quarter commitment. Volunteers are generally expected to attend lab group meetings in addition to their work in the lab.

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Elements

i = 0;

while (!deck.isInOrder()) {
    print 'Iteration ' + i;
    deck.shuffle();
    i++;
}

print 'It took ' + i + ' iterations to sort the deck.';