Publications

Theses, Dissertations, and Scholarly Reports:

  1. Bi, N., Ph.D., May 1991. Thesis: Contributions to the Experimental Investigation of Rotor/Body Aerodynamic Interactions.
  2. Ghee, T.A., M.S., May 1990. Thesis: An Experimental Investigation of Unsteady Circulation Control Aerodynamics of a Circular Cylinder.
  3. Tyler, J.C., M.S., May 1991. Thesis: An Analysis of Pitch and Plunge Effects on Unsteady Airfoil Behavior.
  4. Zandieh, A., M.S., Dec. 1991. Thesis: Experiments in Unsteady Circulation Control.
  5. van der Wall, B., M.S., Dec. 1991. Thesis: Unsteady Aerodynamics of an Airfoil in a Time-Dependent Free-Stream Velocity.
  6. Crouse, G.L., M.S., May 1989. Scholarly Paper: Transonic Flutter Analysis using State-Space Unsteady Aerodynamic Modeling.
  7. Shaffer, D.W., M.S. May 1991. Scholarly Paper: Wind-Tunnel Corrections: With Application to Rotary Wing Aircraft.
  8. Bagai, A., M.S., May 1992. Scholarly Paper: Rotor Wake Studies in Hover and Forward Flight using Wide-Field Shadowgraphy.
  9. Crouse, G.L., Ph.D., Nov. 1992. Dissertation: An Analytical Study of Rotor/Airframe Interactions in Hover and Forward Flight.
  10. Platz, D., M.S.,May 1994. Scholarly Paper: CAMAC Control - A Data Acquisition and Analysis System.
  11. Daghir, M., M.S., May 1994. Scholarly Paper: Observations of Descending Rotor Wake Patterns.
  12. Moedersheim, E.P., M.S.,August 1994. Scholarly paper: Flow Visualization of Rotor Wakes Using Shadowgraph and Schlieren Techniques.
  13. Teager, S.A., M.S., Dec. 1994. Thesis: Light Airplane Response to Aircraft Wake Turbulence.
  14. Hariharan, N., M.S., May 1995. Thesis: Unsteady Aerodynamics of a Flapped Airfoil in Subsonic Flow using Indicial Concepts.
  15. Robinson, K.W., M.S., May 1995. Thesis: Aerodynamic Characteristics of Rotor Airfoils as Affected by Simulated Ballistic Damage.
  16. Bagai, A., Ph.D. Aug., 1995. Dissertation: Contributions to the Mathematical Modeling of Rotor Wakes using a Pseudo-Implicit Free-Wake Analysis.

Papers in Professional Journals and Conference Proceedings:

  1. Leishman, J.G., "Representation of Sweep Effects on Dynamic Stall," Proceedings of the Second International Conference on Rotorcraft Basic Research, University of Maryland, February 1988.
  2. Elliott, A.S., Leishman, J.G., Chopra, I., "Rotorcraft Aeromechanical Analysis using a Nonlinear Unsteady Aerodynamic Model," Proceedings of the 44th. Annual Forum of the American Helicopter Society, Washington DC., June 1988.
  3. Leishman, J.G., "A Two-Dimensional Model for Airfoil Unsteady Drag Below Stall," Journal of Aircraft, Vol. 25, No. 7, July 1988, pp. 665-666.
  4. Leishman, J.G., "Validation of Approximate Indicial Functions for Two-Dimensional Subsonic Flow," Journal of Aircraft, Vol. 25, No. 10, October 1988, pp. 914-922.
  5. Leishman, J.G., Crouse, G.L., Jr., "A State-Space Model of Unsteady Aerodynamics for Flutter Analysis in a Compressible Flow," AIAA paper 89-0022, Presented at the AIAA 27th Aerospace Sciences Meeting, Reno, Nevada, Jan. 1989.
  6. Leishman, J.G., Crouse, G.L., Jr., "A State-Space Model for Unsteady Airfoil Behavior and Dynamic Stall," AIAA paper 89-1319, Proceedings of the AIAA/AHS/ASME Structural Dynamics and Materials Conference, Mobile, Alabama, April 1989.
  7. Leishman, J.G., Nai-pei Bi, "Aerodynamic Interactions Between a Rotor and a Fuselage in Forward Flight," Proceedings of the 45th Annual Forum of the American Helicopter Society, Boston, MA, May 1989.
  8. Leishman, J.G., "Modeling of Sweep Effects on Dynamic Stall," Journal of the American Helicopter Society, Vol. 34, No. 3, July 1989, pp. 18-29.
  9. Leishman, J.G., Beddoes, T.S., "A Semi-Empirical Model for Dynamic Stall," Journal of the American Helicopter Society, Vol. 34, No. 3, July 1989, pp. 3-17.
  10. Leishman, J.G., Nai-pei Bi, "Experimental Study of Aerodynamic Interactions between a Rotor and a Fuselage," Proceedings of the 7th AIAA Applied Aerodynamics Conference, Seattle, Washington, August 1989.
  11. Leishman, J.G., Nguyen, K.Q., "State-Space Representation of Unsteady Airfoil Behavior," AIAA Journal, Vol. 28, No. 5, May 1990, pp. 836-844.
  12. Leishman, J.G., "Modeling of Subsonic Unsteady Aerodynamics for Rotary Wing Applications," Journal of the American Helicopter Society., Vol. 35, No. 1, Jan. 1990, pp. 29-38.
  13. Leishman, J.G., "Dynamic Stall Experiments on the NACA 23012 Airfoil," Experiments in Fluids, Vol. 9, 1990, pp. 49-58.
  14. Crouse, G.L., Leishman, J.G., Bi Nai-pei, "Theoretical and Experimental Study of Unsteady Rotor/Body Aerodynamic Interactions," Proceedings of the 46th Annual Forum of the American Helicopter Society, Washington DC, May 21-23, 1990.
  15. Leishman, J.G., Nai-pei Bi, "Measurements of a Rotor Flowfield and the Effects on a Fuselage in Forward Flight," Proceedings of the 16th European Rotorcraft Forum, Glasgow, Scotland, 18-20 September 1990.
  16. Ghee, T.A., Leishman, J.G., "Unsteady Circulation Control Aerodynamics of a Circular Cylinder with Periodic Jet Blowing," AIAA Paper 91-0433. Presented at the AIAA Aerospace Sciences Meeting, Reno, Nevada, January 1991.
  17. Bagai, A., Leishman, J.G., Samak, D.K., "A Study of Rotor Wake Development and Wake/Body Interactions in Hover using Wide-Field Shadowgraphy," Proceedings of the Technical Specialists meeting on Rotorcraft Basic Research, Georgia Institute of Technology, 1991.
  18. Bi, Nai-pei, Leishman, J.G., "Analysis of Unsteady Pressures Induced on a Body in the Vicinity of a Rotor," Proceedings of the Technical Specialists meeting on Rotorcraft Basic Research, Georgia Institute of Technology, 1991.
  19. Leishman, J.G., Tyler, J.C., "An Analysis of Pitch and Plunge Effects on Unsteady Airfoil Behavior," Proceedings of the 47th Annual Form of the American Helicopter Society, Phoenix, AZ, May 1991.
  20. Bi Nai-pei, Leishman, J.G., "Rotor Wake/Body Interactions in Forward Flight," Paper AIAA 91-3228, Proceedings of the 9th Applied Aerodynamics Conference, Baltimore, Sept. 1991.
  21. Leishman, J.G., Bagai A., "A Study of Rotor Wake Developments and Wake/Body Interactions in Low Speed Forward Flight," Paper AIAA 91-3232, Proceedings of the 9th Applied Aerodynamics Conference, Baltimore, Sept. 1991.
  22. Leishman, J.G., Nai-pei Bi, "Aerodynamic Interactions Between a Rotor and a Fuselage in Forward Flight," Journal of the American Helicopter Society, Vol. 34, No. 3, July 1990, pp. 22-31.
  23. Ghee, T.A., Leishman, J.G., "Effects of Unsteady Blowing on the Lift of a Circulation Controlled Cylinder," Journal of the American Helicopter Society, Vol. 34, No. 3, July 1990, pp. 90-93.
  24. Nai-pei, Bi, Leishman, J.G., "Experimental Study of Rotor/Body Aerodynamic Interactions," Journal of Aircraft, Vol. 27, No. 9, Sept. 1990, pp. 779-788.
  25. Leishman, J.G., Nai-pei Bi, "Measurements of a Rotor Flowfield and the Effects on a Fuselage in Forward Flight," Vertica, Vol. 14, No. 3, Sept./Oct. 1990, pp. 401-415.
  26. Crouse, G.L., Leishman, J.G., Bi Nai-pei, "Theoretical and Experimental Study of Unsteady Rotor/Body Aerodynamic Interactions," Journal of the American Helicopter Society, Vol. 37, No. 1, Jan. 1992, pp. 55-65.
  27. Leishman, J.G., "Comment on Induced Drag Based on Leading-Edge Suction for a Helicopter in Forward Flight," AIAA Journal, Vol. 29, No. 9, Sept. 1991, pp. 1532-1533.
  28. Nai-Pei Bi, Leishman, J.G., "Analysis of Unsteady Pressures Induced on a Body in the Vicinity of a Rotor," Journal of Aircraft, Vol. 28, No. 11, Nov. 1991, pp. 756-767.
  29. Ghee, T.A., Leishman, J.G., "Unsteady Circulation Control Aerodynamics of a Circular Cylinder with Periodic Jet Blowing," AIAA Journal, Vol. 30, No. 2, Feb. 1992, pp. 289-299.
  30. Crouse, G.L., Jr., Leishman, J.G., "Transonic Aeroelasticity Analysis using a Finite-State Unsteady Aerodynamic Model," Journal of Aircraft, Vol. 29, No 2, Feb. 1992, pp. 153-160.
  31. Tyler, J.C., Leishman, J.G., "An Analysis of Pitch and Plunge Effects on Unsteady Airfoil Behavior," Journal of the American Helicopter Society, Vol. 37, No. 3, July 1992, pp. 69-82.
  32. Bagai, A., Leishman, J.G., "A Study of Rotor Wake Developments and Wake/Body Interactions in Hover using Wide-Field Shadowgraphy," Journal of the American Helicopter Society, Vol. 37, No. 4, Oct. 1992, pp. 48-57.
  33. Crouse, G.L., Leishman, J.G., "Interaction Aerodynamic Effects on Rotor Performance in Hover and Forward Flight," Proceedings of the 48th Annual Forum of the American Helicopter Society, Washington D.C., June 3-5, 1992.
  34. Bagai, A., Leishman, J.G., "Improved Shadowgraph Method for Rotor Wake Visualization," Journal of the American Helicopter Society, Vol. 37, No. 3, July 1992, pp. 86-92.
  35. Leishman, J.G., "Unsteady Lift of an Airfoil with a Trailing-Edge Flap based on Indicial Concepts," Proceedings of the 18th European Rotorcraft Forum, Avignon, France, Sept. 15-18, 1992.
  36. van der Wall, B., Leishman, J.G., "The Influence of Variable Flow Velocity on Unsteady Airfoil Behavior," Proceedings of the 18th European Rotorcraft Forum, Avignon, France, Sept. 15-18, 1992.
  37. Leishman, J.G., Bi Nai-pei, "Study of Rotor/Lifting Surface Interactions," Presented at the 21st AIAA Aerospace Sciences meeting and Exhibit, Reno, NV, Jan. 11-14, 1993.
  38. Crouse, G.L., Leishman, J.G., "A New Method for Improved Free-Wake Convergence in Hover and Low Speed Forward Flight," Presented at the 21st AIAA Aerospace Sciences meeting and Exhibit, Reno, NV, Jan. 11-14, 1993.
  39. Bagai, A., Moedersheim, E., Leishman, J.G., "Developments in the visualization of Rotor Wakes using the Wide-Field Shadowgraph Method," Proceedings of Experimental and Numerical Flow Visualization, ASME Annual Winter Meeting, New Orleans, Nov. 28-Dec. 3, 1993, FED-Vol. 172, pp. 149-163.
  40. Bi Nai-pei, Leishman, J.G., Crouse G.L., "Investigation of Rotor Tip Vortex Interactions with a Body", Journal of Aircraft, Vol. 30, No. 6, Nov.-Dec., 1993, pp. 879-888.
  41. Zandieh, A., Leishman, J.G., "Boundary Layer Effects on a Circular Cylinder with Unsteady Blowing," AIAA Journal, Vol. 31, No. 10, Oct. 1993, pp. 1769-1776.
  42. Leishman, J.G. "Indicial Lift Approximations for Two-Dimensional Subsonic Flow as Obtained From Oscillatory Measurements." Journal of Aircraft, Vol. 30, No. 3, May-June 1993, pp. 340-351.
  43. Bagai, A., Leishman, J.G., "Flow Visualization of Vortex Structures using Density Gradient Techniques," Experiments in Fluids, Vol. 15, 1993, pp. 431-442.
  44. Bagai, A., Moedersheim, E., Leishman, J.G., "Developments in the Visualization of Rotor Wakes using the Wide-Field Shadowgraph Method," Journal of Flow Visualization and Image Processing, Vol. 1, No. 3, July-Sept. 1993, pp. 211-233.
  45. Leishman, J.G., "Aerodynamic Characteristics of a Helicopter Rotor Airfoil as Affected by Simulated Ballistic Damage," Army Research Laboratory Report ARL-CR-66, Sept. 1993.
  46. Leishman, J.G., "An Assessment of Sweep Effects on Unsteady Aerodynamics and Dynamic Stall -- Including a Comparison with NACA 0012 and SC-1095 Airfoil Data," Contractor Report for United Technologies Research Corporation, Sikorsky Aircraft Division, Sept. 1993.
  47. Leishman, J.G., "Modeling of Three-Dimensional Unsteady Aerodynamics -- Including a Comparison with UTRC Finite Wing Data," Contractor Report for United Technologies Research Corporation, Sikorsky Aircraft Division, Feb. 1994.
  48. Leishman, J.G., "Aerodynamic Characteristics of a Helicopter Rotor Airfoil as Affected by Simulated Ballistic Damage," Proceedings of Test Technology Symposium VII, March 29-31, 1994.
  49. Leishman, J.G., "Unsteady Lift of an Airfoil with a Trailing-Edge Flap based on Indicial Concepts," Journal of Aircraft, Vol. 31, No, 2, March-April, 1994.
  50. Bagai, A., Leishman, J.G., "Rotor Free-Wake Modeling using a Relaxation Technique - Including Comparisons with Experimental Data," Presented at the 50th Annual Forum of the American Helicopter Society, May 1994.
  51. Bagai, A., Leishman, J.G., "A New Rotor Free-Wake Model using a Predictor-Corrector Methodology," AIAA Paper 94-1918, AIAA Applied Aerodynamics Meeting,, Colorado Springs, June 1994.
  52. Leishman, J.G., Bi Nai-pei, "Experimental Investigation of Rotor/Lifting Surface Interactions," Journal of Aircraft, Vol. 31, No. 4, July-Aug. 1994, pp. 846-854.
  53. Leishman, J.G., Nai-pei Bi, "Experimental Data on the Aerodynamic Interactions Between a Helicopter Rotor and an Airframe," AGARD-AR-303 - A Selection of Experimental Test Cases for the Validation of CFD Codes, Vol. 1, August 1994.
  54. Bagai, A., Leishman, J.G., "Free-Wake Analysis of Twin-Rotor Systems," Presented as paper No. 28, 20th European Rotorcraft Forum, Amsterdam, The Netherlands, 4-7 October, 1994.
  55. Moedersheim, E., Daghir, M., Leishman, J.G., "Flow Visualization of Rotor Wakes Using Shadowgraph and Schlieren Techniques," Presented as paper No. 31, 20th European Rotorcraft Forum, Amsterdam, The Netherlands, 4-7 October, 1994.
  56. van der Wall, B., Leishman, J.G., "On the Influence of Variable Flow Velocity on Unsteady Aerodynamics," AHS Journal, Vol. 39, No. 4, Oct. 1994, pp. 25-36.
  57. Bagai, A., Leishman, J.G., "Rotor Free-Wake Modeling using a Relaxation Technique - Including Comparisons with Experimental Data," AHS Journal, Vol. 40, No. 2, April 1995.
  58. Hariharan, N., Leishman, J.G., "Unsteady Aerodynamics of a Flapped Airfoil in Subsonic Flow by Indicial Concepts," Paper 95-1128, Proceedings of the 6th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, New Orleans, LA., April 10-12, 1995.
  59. Bagai, A., Leishman, J.G., "Free-Wake Analysis of Tandem, Tilt-Rotor and Coaxial Rotor Configurations," Presented at the 51st Annual Forum of the American Helicopter Society, Fort Worth, TX, May 9-11, 1995.
  60. Leishman, J.G., "Experimental Investigation into the Aerodynamics Characteristics of Helicopter Rotor Airfoils with Ballistic Damage," Contractor Report, US Army Research lab., Aberdeen Proving Ground, July 1995.
  61. Leishman, J.G., Baker, A., Coyne, A., "Measurements of Rotor Tip Vortices Using Three-Component Laser Doppler Velocimetry," Proceedings of the 2nd International Aeromechanics Specialists' Conference, Bridgeport, CT, Oct. 11-13, 1995.
  62. Moedersheim, E., Leishman, J.G., "Investigation of Aerodynamic Interactions Between a Rotor and a T-Tail Empennage," Proceedings of the 2nd International Aeromechanics Specialists' Conference, Bridgeport, CT, Oct. 11-13, 1995.
  63. Bagai, A., Leishman, J. G., "Free-Wake Analysis of Tandem, Tilt-Rotor and Coaxial Rotor Configurations," Journal of the American Helicopter Society, Vol. 41, No. 3, July 1996, pp. 196-207.
  64. Hariharan, N., Leishman, J. G., "Unsteady Aerodynamics of a Flapped Airfoil in Subsonic Flow by Indicial Concepts," Journal of Aircraft, Vol. 33, No. 5, Sept./Oct. 1996, pp. 855-868.
  65. Leishman, J. G., "On Seed particle Dynamics in Tip Vortex Flows," Journal of Aircraft, Vol. 33, No. 4, July/Aug. 1996, pp. 823-825.
  66. Leishman, J. G., "Subsonic Unsteady Aerodynamics Caused by Gusts Using the Indicial Method," Journal of Aircraft, Vol. 33, No. 5, Sept./Oct. 1996, pp. 869-879.
  67. Han, Y., Leishman, J. G., Coyne, A. J., "On the Turbulent Structure of a Tip Vortex Generated by a Rotor," AIAA Journal, Vol. 35, No. 3, Match 1997, pp. 477-485.
  68. Leishman, J. G., Baker, A., Coyne, A., Measurements of Rotor Tip Vortices Using Three-Component Laser Doppler Velocimetry, Journal of the American Helicopter Society, Vol. 41, No. 4, Oct. 1996, pp. 342-353.
  69. Modersheim, E., Leishman, J. G., "Investigation of Aerodynamic Interactions Between a Rotor and a T-Tail Empennage," To appear in the Journal of the American Helicopter Society, 1998.
  70. Han, Y., Leishman, J. G., Coyne, A. J., "On the Turbulent Structure of a Tip Vortex Generated by a Rotor," Presented at the 52nd Annual Forum of the American Helicopter Society, Washington DC, June 4-6, 1996.
  71. Leishman, J. G., "Aeroacoustics of 2-D and 3-D Blade Vortex Interaction Using the Indicial Method," Presented at the 52nd Annual Forum of the American Helicopter Society, Washington DC, June 4-6, 1996.
  72. Leishman, J. G., "Challenges in Understanding the Vortex Dynamics of Helicopter Rotor Wakes," AIAA Paper 96-1957, Presented at the 27th AIAA Fluid Dynamics Conference, New Orleans, LA, June 18-20, 1996. (Invited Paper).
  73. Leishman, J. G., "Aeroacoustics of Blade Vortex Interaction Using the Indicial Method and the Acoustic Analogy," Presented at the 22nd European Rotorcraft Forum, 17-19 Sept. 1996, Brighton, U.K.
  74. Leishman, J. G., "Investigation of the Aerodynamic Interactions Between a Rotor and a T-Tail Empennage in Forward Flight," Presented at the 22nd European Rotorcraft Forum, 17-19 Sept. 1996, Brighton, U.K.
  75. Coyne, A. J., Bhagwat, M. J., Leishman, J. G., "Investigation into the Rollup and Diffusion of Rotor Tip Vortices using Laser Doppler Velocimetry," 53rd Annual Forum of the American Helicopter Society, Virginia Beach, VA, April 28-May 1, 1997.
  76. Robinson, K. W., "Effects of Ballistic Damage on the Aerodynamics of Rotor Airfoils," 53rd Annual Forum of the American Helicopter Society, Virginia Beach, VA, April 28-May 1, 1997.
  77. Bagai, A., Leishman, J. G., "Adaptive Grid Sequencing and Interpolation Schemes for Rotor Free-Wake Analyses," 53rd Annual Forum of the American Helicopter Society, Virginia Beach, VA, April 28-May 1, 1997.
  78. Leishman, J. G., "Experimental Investigation into the Aerodynamics Characteristics of Helicopter Rotor Airfoils with Ballistic Damage," Army Research Lab (ARL) Contractor Report, ARL-CR-295, 1996.
  79. Bagai, A., Leishman, J. G., "Wake Geometry Predictions for the UH-60 Model Rotor with LST Blade Tips - Part 1," Contractor Report, No. N5545821, Sikorsky Aircraft, UTRC, Jan. 1996.
  80. Bagai, A., Leishman, J. G., "Wake Geometry Predictions for the UH-60 Model Rotor with LST Blade Tips - Part 2," Contractor Report, No. N5595821, Sikorsky Aircraft, UTRC, June 1996.
  81. Leishman, J.G., "Unsteady Aerodynamics of Airfoils Encountering Traveling Gusts and Vortices," Technical Specialists Meeting on Rotorcraft Acoustics and Aerodynamics, Williamsburg, VA, Oct. 28-30, 1997.
  82. Bagai, A., Leishman, J.G., "A Free-Wake Model for Maneuvering Flight," Technical Specialists Meeting on Rotorcraft Acoustics and Aerodynamics, Williamsburg, VA, Oct. 28-30, 1997.
  83. Leishman, J.G., "Computational Analysis of Acoustic Focusing Effects During Parallel and Oblique Blade Vortex Interaction," Technical Specialists Meeting on Rotorcraft Acoustics and Aerodynamics, Williamsburg, VA, Oct. 28-30, 1997.

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