Rotorcraft Dynamics

Rotor Wake Modeling
During the flight of airplane propellers, helicopters, and tilt rotors, the rotor wake undergoes important dynamic motions that profoundly influence vehicle dynamics. This project seeks to correctly model this behavior.

Aeroelasticity
Aeroelastic modelling of helicopter rotors with unsteady aerodynamics and nonlinear structural deformations. Computation of vibration and stability.

Response to Stall
Structural/aerodynamic interaction due to dynamic stall of wings and rotors. Trim methodologies in the presence of stall.

Trim and Stability
Solution of rotor dynamic equations with engine dynamics and multiple rotors involves solution of periodic-coefficient differential equations. This task deals with finding efficient solution strategies for this problem.



Refereed Publications

Peters, D. A. and Hohenemser, K. H., “Applications of the Floquet Transition Matrix to Problems of Lifting Rotor Stability,” Journal of the American Helicopter Society, Vol. 16, No. 2, April 1971, pp. 25-33.
Ormiston, R. A. and Peters, D. A., “Hingeless Helicopter Rotor Response with Nonuniform Inflow and Elastic Blade Bending,” Journal of Aircraft, Vol. 9. No. 10, October 1972, pp. 730-736.
Peters, D. A. and Ormiston, R. A., “Effects of Second-Order Blade Bending on the Angle of Attack of Hingeless Rotor Blades,” Journal of the American Helicopter Society, Vol. 18, No. 4, October 1973, pp. 45-48.
Peters, D. A., “Flap-Lag Stability of Helicopter Rotor Blades in Forward Flight,” Journal of the American Helicopter Society, Vol. 20, No. 4, October 1975, pp. 2-13.
Hodges, Dewey, H. and Peters, David A., “On the Lateral Buckling of Uniform Slender Cantilever Beams,” International Journal of Solids and Structures, Vol. 11, No. 12, December 1975, pp. 1269-1280.
Peters, D. A., “The Effect of Principal Bending Curvature on the Lateral Buckling of Uniform Slender Beams,” Journal of Applied Mechanics, Vol. 44, No. 2, June 1977, pp. 311-316.
Hsu, T. K. and Peters, D. A., “A Simple Dynamic Model for Simulating Draft-Gear Behavior in Rail-Car Impacts,” Journal of Engineering for Industry, Vol. 100, No. 4, November 1978, pp. 492-496.
Peters, D. A. and Wu, Julian J., “Asymptotic Solutions to a Stability Problem,” Journal of Sound and Vibration, Vol. 59, No. 4, October 1978, pp. 591-610.
Peters, D. A., “Optimum Design of a Hydraulic Cushion Unit,” SIAM Review, Vol. 20, No. 4, October 1978, pp. 118-122.
Schrage, D. P. and Peters, D. A., “Effect of Structural Coupling Parameters on the Flap-Lag Forced Response of a Rotor Blade in Forward Flight Using Floquet Theory,” Vertica, Vol. 3, No. 6, June 1979, pp. 177-185.
Gaonkar, G. H. and Peters, D. A., “Use of Multi-Blade Coordinates for Helicopter Flap-Lag Stability with Dynamic Inflow,”' Journal of Aircraft, Vol. 17, No. 2, February 1980, pp. 112-118.
Peters, D. A. and Gaonkar, Gopal H., “Theoretical Flap-Lag Damping with Various Dynamic Inflow Models,” Journal of the American Helicopter Society, Vol. 25, No. 2, April 1980, pp. 29-36.
Peters, D. A. and Hodges, D. H., “In-Plane Vibration and Buckling of a Rotating Beam Clamped off the Axis of Rotation,” Journal of Applied Mechanics, Vol. 47, No. 2, June 1980, pp. 398-402.
Pitt, Dale M. and Peters, D. A., “Theoretical Prediction of Dynamic-Inflow Derivatives,” Vertica, Vol. 5, No. 1, March 1981, pp. 21-34.
Hsu, T. K. and Peters, D. A., “Coupled Rotor/Airframe Vibration Analysis by a Combined Harmonic-Balance, Impedance-Matching Method,” Journal of the Am. Helicopter Society, Vol. 27, No. 1, Jan. 1982, pp. 25-34.
Peters, David A. and Chen, Shui-Yaung, “Momentum Theory, Dynamic Inflow, and the Vortex-Ring State,” Journal of the American Helicopter Society, Vol. 27, No. 3, July 1982, pp. 18-24.
Gaonkar, G. H., Sastry, V. V. S. S., Reddy, T. S. R., Nagabhushanam, J., and Peters, D. A., “The Use of Actuator- Disc Dynamic Inflow for Helicopter Flap-Lag Stability,” Journal of the American Helicopter Society, Vol. 28, No. 3, July 1983, pp. 79-88.
Peters, David A., Kim, Byung S., and Chen, J. S., “Calculation of Trim Settings for a Helicopter Rotor by an Optimized Automatic Controller,” Journal of Guidance, Control, and Dynamics, Vol. 7, No. 1., January-February 1984, pp. 824-834.
Peters, David A., “Toward a Unified Lift Model for Use in Rotor Blade Stability Analyses,” Journal of the American Helicopter Society, Vol. 30, No. 3, July 1985, pp. 32-42.
Peters, David A., Rossow, Mark, P., Korn, Ko, Timothy, “Design of Helicopter Rotor Blades for Optimum Dynamic Characteristics,” Computers and Mathematics with Applications, Vol. 12A, No. 1, January 1986, pp. 85-109.
Gaonkar, Gopal H. and Peters, D. A., “Effectiveness of Current Dynamic-Inflow Models in the Correlation of Experimental Rotor Response Data in Hover and in Forward Flight,” Journal of the American Helicopter Society, Vol. 31, No. 2, April 1986, pp. 47-57.
Hodges, Dewey H., Peters, David A., Pierce, G. Alvin, and Jonnalagadda, V. R. P., “Comment on Nonlinear Deformation of Rotating Beams -- An Alternate Method of Formulation,” Journal of the American Helicopter Society, Vol. 31, No. 3, July 1986, pp. 70-71.
Karunamoorthy, Swami and Peters, David, A., “Use of Hierarchical Elastic Blade Equations and Automatic Trim for Helicopter Vibration Analysis,” Vertica, Vol. 11, Nos. 1-2, January 1987, pp. 233-248.
Stephens, Wendell B. and Peters, David A., “Rotor Body Coupling Revisited,” Journal of the American Helicopter Society, Vol. 31, No. 1, January 1987, pp. 68-72.
Peters, David A. and Chouchane, M., “Effect of Dynamic Stall on Helicopter Trim and Flap-Lag Response,” Journal of Fluids and Structures, Vol. 1. No. 3, July 1987, pp. 299-318.
Peters, David A., “Modelling of Unsteady Aerodynamics for Rotary-Wing Aeroelasticity,” Mathematical and Computer Modelling, Proceedings of Sixth International Conference, Pergamon, Vol. 11, 1988, pp. 293-297.
Peters, David A. and Izadpanah, Amir P., “hp-Version Finite Elements for the Space-Time Domain,” Computational Mechanics, Vol. 3, No. 1, 1988, pp. 73-88.
Chiu, Y. D. and Peters, David A., “Numerical Solutions of Induced Velocities by Semi-Infinite Tip Vortex Lines,” Journal of Aircraft, Vol. 25, No. 5, May 1988, pp. 684-694.
Peters, David A. and HaQuang, Ninh, “Dynamic Inflow for Practical Applications,” Journal of the American Helicopter Society, Vol. 33, No. 4, October 1988, pp. 64-68.
Gaonkar, Gopal H. and Peters, David A., “Review of Dynamic Inflow Modeling for Rotorcraft Flight Dynamics,” Vertica, Vol. 12, No. 3, 1988, pp. 213-242.
Hodges, Dewey H., Crespo da Silva, Marcelo R. M., and Peters, David A., “Nonlinear Effects in the Static and Dynamic Behavior of Beams and Rotor Blades,” Vertica, Vol. 12, No. 3, 1988, pp. 243-256.
Chiu, Yih-Wan and Peters, David A., “Extension of Classical Tip Loss Formulas,” Journal of the American Helicopter Society, Vol. 34, No. 2, April 1989, pp. 68-71.
Peters, David A., Boyd, David Doug, and He, Cheng Jian, “A Finite-State Induced-Flow Model for Rotors in Hover and Forward Flight,” Journal of the Amer. Helicopter. Soc., Vol. 34, No. 4, Oct. 1989, pp. 5-17.
Fuh, Jon-Shen, Panda, Brahmananda, and Peters, David A., “Assembly of Finite-Element Helicopter Subsystems with Large Relative Rotations,” Journal of the American Helicopter Society, Vol. 35, No. 2, April 1990, pp.60-68.
Peters, David A., Chouchane, M., and Fulton, M., “Helicopter Trim with Flap-Lag-Torsion and Stall by an Optimized Controller,” Journal of Guidance, Control, and Dynamics, Special Anniversary Issue, Vol. 13, No. 5, September-October 1990, pp. 824-834.
Peters, David A. and Su, Ay, “Effect of Hidden Dynamic States on Floquet Eigenvalues,” Journal of the American Helicopter Society, Vol. 35, No. 4, October 1990, pp. 72-75.
Peters, David A. and He, ChengJian, “Correlation of Measured Induced Velocities with a Finite-State Wake Model,” Journal of the American Helicopter Society, Vol. 36, No. 3, July 1991, pp. 59-70.
Su, Ay, Yoo, Kyung M., and Peters, David A., “Extension and Validation of an Unsteady Wake Model for Rotors,” Journal of Aircraft, Vol. 29, No. 3, May-June 1992, pp. 374-383.
Peters, David, A. and He, ChengJian, “Optimization of Rotor Blades for Combined Structural, Dynamic, and Aerodynamic Properties,” Structural Optimization, Vol. 5, No. 1-2, December, 1992, pp. 37-44.
Peters, David A. and Su, Ay, “The Effect of an Unsteady, Three-Dimensional Wake on Elastic Blade-Flapping Eigenvalues in Hover,” Journal of the American Helicopter Society, Vol. 38, No. 1, January 1993.
Hou, Lin-Jun and Peters, David A., “Periodic Trim Solutions with hp-Version Finite Elements in Time,” Mathematical and Computer Modelling, Vol. 17, No. 3, 1993, pp. 29-46.
Karunamoorthy, Swami, Peters, David, and Barwey, Dinesh, “Orthogonal Polynomials for Energy Methods in Rotary Wing Structural Dynamics,” Journal of the American Helicopter Society, Vol. 38, No. 3, July 1993, pp. 93-98.
He, Chengjian and Peters, David, “Optimum Rotor Interdisciplinary Design with a Finite State Aeroelastic System,” Mathematical and Computer Modelling, Vol. 18, Nos. 3/4, August 1993, pp. 37-51.
Stumpf, Walter and Peters, David, “An Integrated Finite-State Model for Rotor Deformation, Nonlinear Airloads, Inflow and Trim,” Mathematical and Computer Modelling, Vol. 18, Nos. 3/4, August 1993, pp. 115-130.
SManjunath, A. R., Nagabhushanum, J., Gaonkar, G., Peters, D., and Su, Ay, “Flap-Lag Damping in Hover and Forward Flight with a Three-Dimensional Wake,” Journal of the American Helicopter Society, Vol. 38, No. 4, October 1993, pp. 37-49.
He, Cheng Jian and Peters, David A., “Finite State Aeroelastic Model for Use in Rotor Design Optimization,” Journal of Aircraft, Vol. 30, No. 5, September-October 1993, pp. 777-784.
de Andrade, Donizeti and Peters, David, “Coupling of a State-Space Inflow to Nonlinear Blade Equations and Extraction of Generalized Aerodynamic Force Mode Shapes,” Applied Mechanics Reviews, Vol. 46, No. 11, Part II, November 1993, pp. 5295-5304.
de Andrade, Donizeti and Peters, David, “Correlation of Experimental Flap-Lag-Torsion Damping - A Case Study,” Mathematical and Computer Modelling, Vol. 19, Nos. 3/4, March 1994, pp. 135-158.
Peters, David A., Barwey, Dinesh, and Su, Ay, “An Integrated Airloads-Inflow Model for Use in Rotor Aeroelasticity and Control Analysis,” Mathematical and Computer Modelling, Vol. 19, Nos. 3/4, March 1994, pp. 109-124.
Barwey, Dinesh and Peters, David, “Optimization of Composite Rotor Blades with Advanced Structural and Aerodynamic Modelling,” Mathematical and Computer Modelling, Vol. 19, Nos. 3/4, March 1994, pp. 193-219.
Hou, Lin-Jun and Peters, David A., “Application of Triangular Space-Time Finite Elements to Problems of Wave Propagation,” Journal of Sound and Vibration, Vol. 173, June 1994, pp. 611-632.
Peters, David A., “Fast Floquet Theory and Trim for Multi-Bladed Rotorcraft,” Journal of the American Helicopter Society, Vol. 39, No. 4, October 1994, pp. 82-89.
Peters, David A., Karunamoorthy, Swami, and Cao, Wen-Ming, “Finite-State Induced Flow Models, Part I: Two- Dimensional Thin Airfoil,” Journal of Aircraft, Vol. 32, No. 2, March-April 1995, pp. 313-322.
Peters, David A. and He, Cheng Jian, “Finite-State Induced Flow Models, Part II: Three-Dimensional Rotor Disk,” Journal of Aircraft, Vol. 32, No. 2, March-April 1995, pp. 323-333.
Peters, David A., “Some Observations on the Sinha Approach to Dynamic Response Calculations,” Journal of Sound and Vibration, Vol. 188, No. 4, December 14, 1995, pp. 617-628.
Peters, David A., and Barwey, Dinesh, “A General Theory of Rotorcraft Trim,” Mathematical Problems in Engineering, Vol. 2, No. 1, January 1996, pp. 1-34.
Wang, Yi Ren, and Peters, David A., “The Lifting Rotor Inflow Mode Shapes and Blade Flapping Vibration System Eigen-Analysis,” Computer Methods in Applied Mechanics and Engineering, Vol. 134, 1996, pp. 91-105.
Peters. David A., “Optimum Spring-Damper Design for Mass Impact,” SIAM Review, Vol. 39, No. 1, March 1997, pp. 118-122.
Tang, Deman, Peters, David A., and Dowell, Earl H., “Reduced-Order Aerodynamic Model for Blade Response Using Inflow Eigenmodes,” Journal of the American Helicopter Society, Vol. 43, No. 4, October 1998, pp. 342-351.
Shang, Xiaoyang, Hodges, Dewey H., and Peters, David A., “Aeroelastic Stability of Composite Hingeless Rotors with Finite-State Unsteady Aerodynamics - Part I: Formulations,” Journal of the American Helicopter Society, Vol. 44, No. 3, July 1999, pp. 206-221.
Hodges, Dewey H., and Peters, David A., “Lateral-Torsional Buckling of Cantilevered Elastically Coupled Composite Strip- and I-Beams,” International Journal of Solids and Structures, Vol. 38, No. 9, 2001, pp. 1585-1603.
Krothapalli, K.R., Prasad, J.V.R., Peters, D.A., “Helicopter Rotor Dynamic Inflow Modeling for Maneuvering Flight,” Journal of the American Helicopter Society, Vol. 46, No. 2, April 2001, pp. 129-139.
Morillo, Jorge and Peters, David. "Velocity Field Above a Rotor Disk by a New Dynamic Inflow Model,"Journal of Aircraft, Vol. 39, No. 5, Sept. – Oct. 2002, pp. 731-738.
Peters, David A., Morillo, Jorge, and Nelson, Adria M., "New Developments in Dynamic Wake Modeling for Dynamics Applications," Journal of the American Helicopter Society, Vol. 48, No. 2, April 2003, pp. 120-127.
Zhao, J., Prasad, J.V.R., Peters, D.A., “Rotor Wake Distortion Model for Helicopter Maneuvering Flight,”Journal of the American Helicopter Society, Vol. 49, No. 4, Oct. 2004, pp. 414-424.
Yu, Ke and Peters, David A., “Nonlinear Three-Dimensional State-Space Modeling of Ground Effect with a Dynamic Flow Field,” Journal of the American Helicopter Society, Vol. 50, No. 3, July 2005, pp 259-268.
Peters, David A. and He, Cheng Jian, “Modification of Mass-Flow Parameter to Allow Smooth Transition Between Helicopter and Windmill States,” Journal of the American Helicopter Society, Vol. 51, No. 3, July 2006, pp. 275-278.
Peters, David A., Hsieh, Mong-Che, and Torrero, Almudena, “A State-Space Airloads Theory for Flexible Airfoils,” Journal of the American Helicopter Society, Vol. 51, No. 4, October 2007, pp. 329-342.
Peters, David A., “Two-Dimensional Incompressible Unsteady Airfoil Theory – An Overview,” Journal of Fluids and Structures, Vol. 24, No. 3, July 2008, pp. 295-312.
Peters, David A., “How Dynamic Inflow Survives in the Competitive World of Rotorcraft Aerodynamics,” the 2008 Alexander Nikolsky Lecture, Journal of the American Helicopter Society, Vol. 54, No. 1, January 2009, pp. 1-15.
Bain, Jeremy, Sankar, Lakshmi, Prasad, J.V.R., Peters, David, and He, Chengjian, “Computational Modeling of Variable Droop Leading Edge in Forward Flight,” Journal of Aircraft, Vo. 46, No. 2, March-April 2009, pp.617-626.
Peters, David A. and Lieb, Sydnie M., “Interpretation of Floquet Eigenvalues and Eigenvectors for Periodic Systems,” Journal of the Amer. Helicopter Society, Vol. 56, No. 3, July 2011, pp. 032001-1 to 032001-11.
Peters, David A. and Rong, Xi, "Operational Parameters for Yawed Wind Turbines," International Journal of Aerospace Engineering, Vol. 2011, Article ID 635750, June 2011. doi:10.1155/2011/635750.
Ulrich, Xialing and Peters, David A., "Sinusoidal Locomotion of a Flexible Wing at High Reynolds Numbers,"submitted to the Journal of Fluids and Structures, January 2012.
Peters, David A. and Modarres, Ramin, "A Compact Closed-Form Solution for the Optimum Induced-Flow Distribution of an Ideal Wind Turbine," Wind Energy, 6 FEB 2013, DOI: 10.1002/we.1597.
Gaonkar, Gopal, "Reflections on Professor Kurt Hohenemser's Pioneering Contributions to Helicopter Theory and Development," Journal of the American Helicopter Society, to appear 2013.


Paper Presentations and Proceedings

Peters, David A. and Hohenemser, Kurt H., “Application of the Floquet Transition Matrix to Problems of Lifting Rotor Stability,” Proceedings of the 26th Annual National Forum of the American Helicopter Society, Washington, DC, June 1970, Paper No. 412.
Ormiston, R. A. and Peters, D. A., “Hingeless Rotor Response with Nonuniform Inflow and Elastic Blade Bending -- Theory and Experiment,” AIAA 10th Aerospace Sciences Meeting, San Diego, California, January 1972, AIAA Paper No. 72-65.
Peters, David A., “Hingeless Rotor Frequency Response with Unsteady Inflow,” Proceedings of the American Helicopter Society Dynamics Specialists' Meeting, NASA Ames Research Center, NASA SP-352, February 1974, pp. 1-12.
Peters, D. A., “The Sliding Sill Underframe in Impact Situations,” ASME Paper 76-WA/RT-13, presented at the ASME Winter Annual Meeting, New York, December 5-10, 1976.
Peters, David A., “The Effect of Principal Bending Curvature on the Lateral Buckling of Uniform Slender Beams,” presented at the Applied Mechanics Summer Conference, Yale University, New Haven, CT, June 15-17, 1977, ASME Paper No. 77-APM-22.
Hsu, T-K and Peters, D. A., “A Simple Dynamic Model for Simulating Draft-Gear Behavior in Rail-Car Impacts,” presented at the Rail Transportation Conference, St. Paul, MN, April 11-12, 1978, ASME Paper No. 78-RT-2.
Wei, F-S. and Peters, D. A., “Lag Damping in Autorotation by a Perturbation Method,” Proceedings of the 34th Annual Forum of the American Helicopter Society, Washington, D. C., May 15-17, 1978, Paper, 78-25.
Peters, D. A. and Wu, J. J., “Asymptotic Solutions to a Stability Problem,” Transactions of the 24th Conference of Army Mathematicians, ARO Report 79-1, June 1978.
Schrage, D. P. and Peters, D. A., “Comparison of the Effect of Structural Coupling Parameters on Flap-Lag Forced Response and Stability of a Helicopter Rotor Blade in Forward Flight,” Army Science Conference, West Point, New York, June 1978.
Schrage, D. P. and Peters, David A., “Comparison of the Effect of Structural Coupling Parameters on Flap-Lag Forced Response and Stability of a Helicopter Rotor Blade in Forward Flight,” Proceedings of the Fourth European Rotorcraft Forum, Stresa, Italy, September 13-15, 1978, Paper No. 23.
Gaonkar, Gopal H. and Peters, D. A., “Flap-Lag Stability with Dynamic Inflow by the Method of Multi-Blade Coordinates,” AIAA Structures, Structural Dynamics and Materials Conference, St. Louis, April 1979, AIAA Paper 79-0729.
Peters, David A. and Gaonkar, Gopal H., “Theoretical Flap-Lag Damping with Various Dynamic Inflow Models,”Proceedings of the 35th Annual National Forum of the American Helicopter Society, Washington, D. C., May 1979, Paper No. 79-20.
Peters, David A., “The Effect of Rotation on Structural Stiffness,” Proceedings of the Fifth World Conference on the Theory of Machines and Mechanisms, Montreal, July 8-13, 1979.
Diboll, W. B. and Peters, David A., “Coupler Override Mechanisms,” presented at the ASME Winter Annual Meeting, New York, December 1979, ASME Paper 79-WA/RT-9.
Hsu, T-K. and Peters, D. A., “Coupled Rotor/Airframe Vibration Analysis by a Combined Harmonic-Balance, Impedance-Matching Method,” Proceedings of the 36th Annual National Forum of the American Helicopter Society, Washington, D. C., May 1980.
Peters, D. A. and Zvolanek, Ivo, “A Physical Explanation of Parametric Instabilities in Unsymmetric Rotors,”Second International Conference on Vibrations in Rotating Machinery, Cambridge, England, September 2-4, 1980, Paper C261/80.
Pitt, Dale M. and Peters, David A., “Theoretical Predictions of Dynamic-Inflow Derivatives,” Proceedings of the Sixth European Rotorcraft Forum, Bristol, September 16-19, 1980, Paper No. 47.
Peters, David A. and Kim, Byung S., “Control Settings for a Trimmed, Stalled Rotor by an Automatic Feedback System,” AIAA Dynamics Specialists' Conference, Atlanta, Georgia, April 1981, AIAA Paper No. 81-0617-CP.
Gaonkar, Gopal H., Mitra, A. K., and Peters, D. A., “Feasibility of a Rotor Flight-Dynamics Model with First-Order Cyclic Inflow and Multi-Blade Modes,” AIAA Dynamic Specialists' Conference, Atlanta, Georgia, April 1981, AIAA paper No. 81-0611-CP.
Peters, David A. and Kim, Byung, S., “Control Settings for a Trimmed, Stalled Rotor by an Automatic Feedback System,” Proceedings of the AIAA 22nd Structures, Structural Dynamics, and Materials Conference, Atlanta, Georgia, April 1981, Paper No. 81-0617, pp. 463-470.
Peters, David A. and Izadpanah, Amir P., “Helicopter Trim by Periodic Shooting with Newton-Raphson Iteration,” 37th Annual Forum of the American Helicopter Society, New Orleans, Louisiana, May 1981, Paper 81-23, pp. 217-226.
Gaonkar, G. H., Sastry, V. V. S. S., Reddy, T. S. R., and Peters, David A., “On the Adequacy of Modeling Dynamic Inflow for Helicopter Flap-Lag Stability,” Eighth European Rotorcraft and Powered Lift Aircraft Forum, Aix-en-Provence, France, August 31-September 3, 1982, Paper No. 3.11.
Peters, David A., Ko, Timothy, Korn, Alfred, and Rossow, Mark, “Design of Helicopter Rotor Blades for Desired Placement of Natural Frequencies,” Proceedings of the 39th Annual National Forum of the American Helicopter Society, St. Louis, May 10-12, 1983.
Peters, David A., “Importance of Steady and Dynamic Inflow on the Stability of Rotor Body Systems,”Proceedings of the ITR Methodology Assessment Workshop on Rotorcraft Modeling, NASA-Ames Research Center, June 21-22, 1983.
Pitt, Dale M. and Peters, David A., “Rotor Dynamic-Inflow Derivatives and Time Constants from Various Inflow Models,” Ninth European Rotorcraft Forum, Stresa, Italy, September 13-15, 1983, Paper No. 55.
O'Malley, James, Izadpanah, Amir P., and Peters, David, A., “Comparisons of Three Numerical Trim Methods for Rotor Airloads,” Ninth European Rotorcraft Forum, Stresa, Italy, September 13-15, 1983, Paper No. 58.
Peters, David A., “Toward a Unified Model for Use in Rotor Blade Stability Analyses,” Proceedings of the 40th Annual Forum of the American Helicopter Society, Arlington, Virginia, May 16-18, 1984, pp. 525-538.
Swift, Andrew H. P. and Peters, David A., “Special Topics in the Aerodynamics of Wind Turbines,” presented at the 21st Annual Meeting of the Society of Engineering Science, Virginia Polytechnic Institute, Blacksburg, October 15, 1984.
Huang, Ming-Sheng and Peters, David A., “Coupled Rotor-Body Vibrations with Inplane Degrees of Freedom,”Proceedings of the 2nd Decennial Specialists' Meeting on Rotorcraft Dynamics, Ames Research Center, November 7-9, 1984.
Gaonkar, Gopal H. and Peters, David A., “A Review of Dynamic Inflow and its Effect on Experimental Correlations,” Proceedings of the 2nd Decennial Specialists' Meeting on Rotorcraft Dynamics, Ames Research Center, November 7-9, 1984.
Peters, David A. and Ventura, Liliana., “Application of Various Techniques to the Calculation of Transonic Flutter Boundaries,” presented at the ASME Vibration and Sound Conference, Cincinnati, Ohio, September 11-13, 1985.
Peters, David A., “The Effect of Rotation on Structural Stiffness,” Proceedings of the Fifth World Conference on the Theory of Machines and Mechanisms, Montreal, July 8-13, 1979.
Gaonkar, Gopal H. and Peters, David A., “Review of Floquet Theory in Stability and Response Analyses of Dynamic Systems with Periodic Coefficients,” Raymond L. Bisplinghoff Conference on Recent Trends in Aeroelasticity, Structures, and Structural Dynamics, Gainesville, Florida, February 6-7, 1986.
Gaonkar, Gopal H. and Peters, David A., “Review of Dynamic Inflow Modeling for Rotorcraft Flight Dynamics,”AIAA 27th SDM Conference, San Antonio, Texas, May 19-20, 1986.
Karunamoorthy, Swami and Peters, David A., “Use of Hierarchical Elastic Blade Equations and Automatic Trim for Helicopter Vibration Analysis,” 42nd Annual Forum of the American Helicopter Society, Washington, D.C., June 2-4, 1986, pp. 63-80.
Peters, David A. and Izadpanah, Amir P., “Generalization of Hamilton's Law to a Bilinear Formulation with Application to Helicopter Stability,” presented at the first World Congress on Computational Mechanics, Austin, Texas, September 22-25, 1986.
Peters, David A., “The Importance of Aerodynamics on Rotorcraft Dynamics,” Invited presentation at the AHS Specialists' Meeting on Aerodynamics/Acoustics, Arlington, Texas, February 25-27, 1987.
Ormiston, Robert A., Warmbrodt, William G., Hodges, Dewey H., and Peters, David A., “Rotorcraft Aeroelastic Stability: Army-NASA Research 1967-1987,” Proceedings of the NASA/Army Rotorcraft Technology Conference, NASA Ames Research Center, March 17-19, 1987, NASA Conference Publication 2495, Volume I - Aerodynamics, and Dynamics and Aeroelasticity, pp. 353-529.
Peters, David A. and He, ChengJian, “A Closed-Form Unsteady Aerodynamic Theory for Lifting Rotors in Hover and Forward Flight,” presented at the 43rd Annual National Forum of the American Helicopter Society, St. Louis, May 1987, pp. 839-866.
Peters, David A., “Modelling of Unsteady Aerodynamics for Rotary-Wing Aeroelasticity,” Proceedings of the Sixth International Conference on Mathematical Modelling, St. Louis, August 4-7, 1987.
Fuh, Jon-Shen, Panda, Brahmananda, and Peters, David A., “Efficient Assembly of Finite-Element Subsystems with Large Relative Motions,” Second International Conference on Rotorcraft Basic Research, University of Maryland, February 16-18, 1988.
Schrage, D. P., Peters, D. A., Prasad, J. V. R., Stumpf, Walter, and He, ChengJian, “Helicopter Stability and Control Modeling Improvements and Verification on Two Helicopters,” Proceedings of the Fourteenth European Forum, Milano, Italy, September 20-23, 1988.
Peters, David A. and Cheng, Y. P., “Optimization of Rotor Blades for Combined Structural, Performance, and Aeroelastic Characteristics,” Proceedings of the Second NASA/Air Force Symposium on Recent Experiences in Multidisciplinary Analysis and Optimization, NASA-Langley Research Center, September 28-30, 1988.
Peters, David A. and He, ChengJian, “Comparison of Measured Induced Velocities with Results from a Closed-Form Finite-State Wake Model in Forward Flight,” Proceedings of the 45th Annual National Forum of the American Helicopter Society, Boston, May 22-24, 1989, pp. 533-550.
Peters, David A. and Su, Ay, “The Effect of an Unsteady Three-Dimensional Wake on Elastic Blade-Flapping Eigenvalues in Hover,” Proceedings of the 45th Annual National Forum of the American Helicopter Society, Boston, May 22-24, 1989, pp. 999-1016.
Peters, David A., Chouchane, Mnaouar, and Fulton, Mark, “Use of an Optimized Controller and a Finite-State Model to Find Trimmed Helicopter Flight Controls,” Proceedings of the Fifteenth European Rotorcraft Forum, The Netherlands, September 12-15, 1989.
Kwon, Oh J., Hodges, Dewey H., Peters, David A., and Sankar, L. N., “Application of a Panel Method to Aeroelasticity Stability of Rotors in Hover,” Proceedings of the International Symposium on Boundary Element Methods, East Hartford, October 2-4, 1989.
Peters, David A., He, ChengJian, and Stumpf, Walter, “Combined Use of the Finite-State Lift and Inflow Model for Rotorcraft Modeling” Workshop on Dynamics and Aeroelasticity Stability Modeling of Rotorcraft Systems, Duke University, March 12-14, 1990.
Hodges, Dewey H., Borri, Marco, and Peters, David A., “Space/Time-Domain Finite Elements for Structures, Dynamics, and Control,” Workshop on Dynamics and Aeroelastic Stability Modeling of Rotorcraft Systems, Duke University, March 12-14, 1990.
Schrage, Daniel P., Peters, David A., and McKeithan, Clifford M., “The Georgia Tech Center for Excellence for Rotary Wing Aircraft Technology (CERWAT)-An Unqualified Success,” Proceedings of the Annual Conference of the ASEE, Toronto, June 24-28, 1990.
He, ChengJian and Peters, David A., “Optimization of Rotor Blades for Combined Structural, Dynamic, and Aerodynamic Properties,” Proceedings of the Third Air Force/NASA Symposium on Recent Advances in Multidisciplinary Analysis and Optimization, San Francisco, September 24-26, 1990.
Peters, David A. and He, ChengJian, “An Aeroelastic Analysis with a Generalized Dynamic Wake,” Proceedings of the AHS International Technical Specialists' Meeting on Rotorcraft Basic Research, Atlanta, March 25-27, 1991.
Peters, David A. and Hou, Lin-Jun, “Periodic Trim Solutions with hp-Version Finite Elements in Time,” Proceedings of the AHS International Technical Specialists' Meeting on Rotorcraft Basic Research, Atlanta, March 25-27, 1991.
Chiu, Danny Y. and Peters, David A., “Aerodynamic Parametric Studies and Sensitivity Analysis for Rotor Blades in Axial Flight,” Proceedings of the AHS International Technical Specialists' Meeting on Rotorcraft Basic Research, Atlanta, March 25-27, 1991.
Peters, David A. and He, ChengJian, “Integration of Dynamic, Aerodynamic, and Structural Optimization of Rotor Blades,” NASA Interdisciplinary Office Optimization Workshop, April 11, 1991.
Peters, David A. and Su, Ay, “An Integrated Airloads-Inflow Model for Use in Rotor Aeroelasticity and Control Analysis,” Proceedings of the 47th Annual National Forum of the American Helicopter Society, Phoenix, May 6-8, 1991, pp. 25-40.
Wang, Yi-Ren and Peters, David A., “The Effect of Wake Dynamics on Rotor Eigenvalues in Forward Flight,”presented at the Fourth Workshop on Dynamics and Aeroelastic Stability Modeling of Rotorcraft Systems, University of Maryland, November 19-21, 1991.
Peters, David A. and Hou, Lin-Jun, “Displacement hp-Version Space-Time Finite Elements in Elastodynamics,”Proceedings of the Sixteenth South Eastern Conference on Theoretical and Applied Mechanics, Nashville, TN, April 12-14, 1992.
Manjunath, Nagabhushanam, Gaonkar, Gopal H., Peters, David A., and Su, Ay, “Flap-Lag Damping in Hover and Forward Flight with a Three-Dimensional Wake,” presented at the Fourth Workshop on Dynamics and Aeroelastic Stability Modeling of Rotorcraft Systems, University of Maryland, November 21, 1991; and Proceedings of the 48th Annual National Forum of the American Helicopter Society, Washington, June 3-5, 1992, pp. 1061-1080.
de Andrade, Donizeti and Peters, David A., “Application of Finite-State Inflow to Flap-Lag-Torsion Damping in Hover,” Proceedings of the Eighteenth Rotorcraft Forum, Avignon, France, September 15-18, 1992.
He, ChengJian and Peters, David A., “Analytical Formulation of Optimum Rotor Interdisciplinary Design with a Three-Dimensional Wake,” Proceedings of the Fourth AIAA/Air Force/NASA/OAI Symposium on Multidisciplinary Analysis and Optimization, Cleveland, Ohio, September 21-23, 1992.
Yoo, K. M., Hodges, D. H., and Peters, David A., “An Interactive Numerical Procedure for Rotor Aeroelastic Stability Using Elastic Lifting Surface,” 18th Congress of the International Council of the Aeronautical Sciences, Beijing, China, September 21-25, 1992, Paper ICAS-92-6.6.3.
de Andrade, Donizeti and Peters, David A., “Coupling of State-Space Inflow to Nonlinear Blade Equations and Extraction of Generalized Aerodynamic Force Mode Shapes,” 3rd Pan American Congress of Applied Mechanics Sao Paulo, Brazil, January 4-8, 1993.
Nibbelink, Bruce D. and Peters, David A., “Flutter Calculations for Fixed and Rotating Wings with State-Space Inflow Dynamics,” Proceedings of the 34th AIAA SDM Conference, La Jolla, California, April 19-21, 1993.
Peters, David A. and Khan, Azhar, “Rotor Performance and Helicopter Mission Optimization with a Quasi-Static Inflow Theory,” Proceedings of the AHS Specialists' Meeting on Rotorcraft Multi-Disciplinary Design Optimization, Georgia Tech., Atlanta, April 27-29, 1993.
Peters, David A., “Rotorcraft Multidisciplinary Design Optimization – A University Perspective,” presented at the AHS Specialists' Meeting on Rotorcraft Multidisciplinary Design Optimization, Georgia Tech, Atlanta, April 27-29, 1993.
de Andrade, Donizeti and Peters, David, “Correlation of Experimental Flap-Lag-Torsion Damping, a Case Study,” Proceedings of the 49th Annual National Forum of the American Helicopter Society, St. Louis, May 19-21, 1993, pp. 1011-1028.
Pember, Richard and Peters, David, “Validation of an Integrated Finite-State, Dynamic-Stall, Inflow Model in Two Dimensions,” presented at the Fifth Workshop on Dynamics and Aeroelastic Stability Modeling of Rotorcraft Systems, Rensselaer Polytechnic Institute, October 18-20, 1993.
Fuh, Jon-Shen, Panda, Brahmananda, and Peters, David A., “Efficient Assembly of Finite-Element Subsystems with Large Relative Motions,” Second International Conference on Rotorcraft Basic Research, University of Maryland, February 16-18, 1988.
Barwey, Dinesh and Peters, David, “Optimization of Composite Rotor Blades with Advanced Structural and Aerodynamic Modelling,” Proceedings of the American Helicopter Society Aeromechanics Specialists' Conference, San Francisco, January 19-21, 1994.
Stettner, Martin, Schrage, Daniel P. and Peters, David A., “Application of a State-Space Wake Model to Tiltrotor Wing Unsteady Aerodynamics,” Proceedings of the American Helicopter Society Aeromechanics Specialists' Conference, San Francisco, January 19-21, 1994.
Peters, David A. and Karunamoorthy, Swami, “State-Space Inflow Models for Rotor Aeroelasticity,” Proceedings of the Holt Ashley 70th Anniversary Symposium”, Stanford University, September 22-23, 1993, pp. 828-837, and AIAA 12th Applied Aerodynamics Conference, Colorado Springs, June 20-23, 1994.
Peters, David A. and Johnson, Mark J., “Finite-State Airloads for Deformable Airfoils on Fixed and Rotating Wings,” Aeroelasticity and Fluid/Structures Interaction Problems, a Mini-Symposium, ASME Winter Annual Meeting, Chicago, Nov. 6-11, 1994, AD - Vol. 44, pp. 1-28.
Peters, David A., and Barwey, Dinesh, “A General Theory of Rotorcraft Trim,” 36th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, New Orleans, April 10-12, 1995, Paper No. 95-1451.
Peters, David A. and Johnson, Mark J., “Finite-State Airloads for Deformable Airfoils on Fixed and Rotating Wings,” Aeroelasticity and Fluid/Structures Interaction Problems, a Mini-Symposium, ASME Winter Annual Meeting, Chicago, Nov. 6-11, 1994, AD - Vol. 44, pp. 1-28.
Peters, David A., “Fast Floquet Theory and Trim for Multi-Bladed Rotorcraft,” Proceedings of the 51st AnnualNational Forum of the American Helicopter Society, Ft. Worth, May 9-11, 1995, pp. 444-460.
Peters, David A., and Li, Si-Hao, “A Combined Periodic-Shooting, Auto-Pilot Technique for Rotorcraft Analysis,” Computational Mechanics '95, Proceedings of the International Conference on Computational Engineering Science, Mauna Lani, Hawaii, July 30-August 3, 1995, pp. 654-659.
Zhao, Bo and Peters, David, “Space-Time hp-Finite Elements with Moving Loads and Moving Constraints,”ASME 15th Biennial Conference on Vibration and Noise, Boston, September 17-21, 1995.
Schmitt, John M., Bayly, Philip V., and Peters, David A., “Stabilization of Periodic Flap-Lag Dynamics in Rotor Blades,” ASME 15th Biennial Conference on Vibration and Noise, Boston, September 17-21, 1995; and AHS 2nd International Aeromechanics Specialists' Conference, Bridgeport, CT, October 11-13, 1995.
Peters, David A., Barwey, Dinesh, and Johnson, Mark J., “Finite-State Airloads Modeling with Compressibility and Unsteady Free-Stream,” Sixth International Workshop on Dynamics and Aeroelastic Stability Modeling of Rotorcraft Systems, UCLA, November 8-10, 1995.
Barwey, Dinesh and Peters, David A., “Modeling of Radial-Flow Stall Effects for Rotor Dynamics,” Sixth International Workshop on Dynamics and Aeroelastic Stability Modeling of Rotorcraft Systems, UCLA, November 8-10, 1995.
Peters, David A. and Cao, Wenming, “Off-Rotor Induced Flow by a Finite-State Wake Model,” 37th AIAA SDM Conference, Salt Lake City, April 15-17, 1996, Paper No. 96-1550.
Peters, David A. and Beaver, Rochelle D., “Application of Fast Floquet Theory to Rotor Flap Response with Dynamic Inflow,” AIAA Dynamics Specialists' Conference, Salt Lake City, April 18-19, 1996, Paper No.96-1216.
de Andrade, Donizeti, da Silva Correa, Manoela, and Peters, David A., “New Correlation of Experimental Flap-Lag-Torsion Damping,” Proceedings of the 52nd Annual National Forum of the American Helicopter Society, Washington, DC, June 4-6, 1996, pp. 137-151.
Peters, David A., Bayly, Phillip, and Li, Sihao, “A Hybrid Periodic-Shooting, Auto-Pilot Method for Rotorcraft Trim Analysis,” Proceedings of the 52nd Annual National Forum of the American Helicopter Society, Washington, DC, June 4-6, 1996, pp. 780-794.
Zhang, Hong, Prasad, J. V. R., and Peters, D. A., “Finite State Inflow Models for Lifting Rotors in Ground Effect,” Proceedings of the 52nd Annual National Forum of the American Helicopter Society, Washington, DC, June 4-6, 1996, pp. 1532-1536.
Krothapalli, K. R., Prasad, J. V. R., and Peters, David A., “Development of a Comprehensive Wake Theory for Lifting Rotors,” Proceedings of the AIAA Atmospheric Flight Mechanics Conference, San Diego, July 1996.
Ngo, D. A. and Peters, D. A., “Integrating Manufacturing Cost into the Structural Optimization Design Process,”Proceedings of the 33rd Annual Technical Meeting of the Society of Engineering Science, Tempe, Arizona, October 20-23, 1996.
Nichols, Gregory R. and Peters, David A., “Finite-State Wake Influence Coefficients as Determined from Vortex-Lattice Results,” Proceedings of the Fifth Pan American Congress of Applied Mechanics (PACAM V), San Juan, Puerto Rico, January 2-4, 1997.
Peters, David A., and Morillo, Jorge, “Harmonic Balance Approach for Rotorcraft with both Unsteady and Unknown Rotor Speed,” Proceedings of the 38th AIAA Structures, Structural Dynamics, and Materials Conference, Kissimmee, Florida, April 7-10, 1997, Paper No. 97-1095.
Prasad, J., Zhang, H., and Peters, D., “Finite State In-Ground Effect Inflow Models for Lifting Rotors,”Proceedings of the 53rd Forum of the American Helicopter Society, Virginia Beach, April 29-May 1, 1997, pp. 988-993.
Peters, David A., Karunamoorthy, Swami, and Regulez, Guillermo, “A Study on Airfoil Section Flutter with Two-Dimensional, Finite-State Aerodynamics,” Proceedings of the Sixth International Conference on Recent Advances in Structural Dynamics, Southampton, England, July 14-17, 1997.
Schmitt, John, Bayly, Philip, and Peters, David, “Stabilization of Periodic Flap-Lag Dynamics in Rotorcraft,”presented at the IUTAM Symposium on New Applications of Nonlinear and Chaotic Dynamics in Mechanics, Cornell University, July 27-August 1, 1997.
Barocela, Ed, Peters, David, Krothapalli, Krish, and Prasad, J. V. R., “The Effect of Wake Distortion on Rotor Inflow Gradients and Off-Axis Coupling,” AIAA Atmospheric Flight Mechanics Conference, New Orleans, Aug. 11-13, 1997, Paper No. AIAA-97-3579.
Peters, David A., Karunamoorthy, Swami, and Sobol, Mike, “Extension of Dynamic Wake Models to Moderate to High Reduced Frequencies,” FSI, AE FIV + N Symposium, ASME International Congress, Dallas, Texas, November 16-21, 1997.
Wang, Xin and Peters, David, “Floquet Analysis in the Absence of Complete Information on States and Perturbations,” Seventh International Workshop on Dynamics and Aeroelastic Stability Modeling, St. Louis, October 14-16, 1997.
Bayly, Philip, Schmitt, John, and Peters, David, “Stabilization of Periodic-Coefficient Flap-Lag Dynamics through Application of Discrete Control,” Seventh International Workshop on Dynamics and Aeroelastic Stability Modeling, St. Louis, October 14-16, 1997.
Sobol, Michael, Karunamoorthy, Swami, and Peters, David, “Theodorsen Lift Deficiency Function in Perspective of Finite State Paradigm,” Seventh International Workshop on Dynamics and Aeroelastic Stability Modeling, St. Louis, October 14-16, 1997.
Krothapalli, K. R., Prasad, J. V. R., and Peters, D. A., “Improved Wake Geometry Model for a Maneuvering Rotor,” Proceedings of the AHS Technical Specialists' Meeting for Rotorcraft Acoustics and Aerodynamics, Stratford, Connecticut, October 28-30, 1997.
Prasad, J. V. R., Xin, Hong, Peters, D. A., Nagashima, T., and Iboshi, N., “Development and Validation of a Finite State In-Ground Effect Inflow Model for Lifting Rotors,” AHS Technical Specialists' Meeting for Rotorcraft Acoustics and Aerodynamics, Williamsburg, Virginia, November 28-30, 1997.
Jackson, Timothy and Peters, David, “Convergence of Nonlinear Finite Element Solutions in the Presence of Large Axial Stress Fields,” Proceedings of SECTAM XIX, Deerfield Beach, FL, May 3-5, 1998.
Krothapalli, K., Prasad, J. V. R., and Peters D. A., “Study of a Rotor Flap-Inflow Model Including Wake Distortion Terms,” NATO RTO/SCI Panel Symposium, “System Identification for Integrated Aircraft Development and Flight Testing,” Madrid, Spain, May 5-7, 1998.
Peters, Michael H. and Peters, David A., “Discrete Control Theory and Dynamic Observers Applied to Rotorcraft Stability and Trim,” Proceedings of the 54th Annual National Forum of the American Helicopter Society, Washington, DC, May 20-22, 1998, pp. 684-699.
Xin, Hong, Prasad, J. V. R., Peters, D. A., Nagashima, T., and Iboshi, N., “A Finite State Inflow Model for Simulation of Helicopter Hovering in Ground Effect,” Proceedings of the 54th Annual National Forum of the American Helicopter Society, Washington DC, May 20-22, 1998, pp. 777-784.
Peters, David A. and Wang, Xin, “Generalized Floquet Theory for Analysis of Numerical or Experimental Rotor Response Data,” 24th European Rotorcraft Forum, Marseilles, France, September 15-17, 1998.
Krothapalli, Krishnamohan, Prasad, J.V.R., Peters, David A., “Study of a Rotor Flap-Inflow Model including Wake Distortion Terms,” Proceedings of the RTO Systems Concepts and Integration Panel, Madrid, Spain, May 5 - 7, 1998, NATO RTO-MP-11, AC/323 (SCI)TP/7, pages 26-1 to 26-10.
Krothapalli, K.R., Prasad, J.V.R., Peters, D.A., “Helicopter Rotor Dynamic Inflow Modeling for Maneuvering Flight,” Proceedings of the 55th Annual National Forum of the AHS, The Society for Vertical Flight, Montreal, May 14 -17, 1999, pp. 498-510.
Itoga, et al, “A New Numerical Method for Predicting Aero-Mechanical Behaviors of a Rotor Hovering at Close Proximity to Inclined Flat Surface,” Proceedings of the 55th Annual National Forum of the AHS, The Society for Vertical Flight, Montreal, May 14-17, 1999, pp. 511-520.
Xin, et al, “Ground Effect Aerodynamics of Lifting Rotors Hovering Above Inclined Ground Plane,” presented at the AIAA Applied Aerodynamics and CFD Conference, Norfolk, Virginia, June 28 – July 1, 1999, AIAA – 99-3223.
Xin, Hong, Prasad, J.V.R., Peters, D. A., “Dynamic Inflow Modeling for simulation of a Helicopter Operating in Ground Effect,” presented at the AIAA Modeling and Simulation Technology conference, Portland, Oregon, August 9-11, 1999, AIAA – 99-4114.
Peters, Michael H., Bayly, Philip V., and Peters, David A., “The Use of Discrete Observer Theory to Trim and Stabilize Periodic Coefficient Dynamic Systems,” Proceedings of the 25th European Rotorcraft Forum, Palazzo Salviati, Rome, Italy, Sept. 14-16, 1999, paper G24.
Xin, H., Prasad, J.V.R., Peters, D.A., “Inflow Model for Simulation of Helicopter Flight in Dynamic Ground Effect,” Proceedings of the 25th European Rotorcraft Forum, Rome, Italy, Sept. 14 - 16, 1999, Paper No. H5.
Peters, David A., “A History of Finite-State Inflow Modeling,'' invited lecture presented at the Army Research Office Eighth International Workshop on Dynamics and Aeroelastic Stability Modeling,” Pennsylvania State University, October 18-19, 1999.
Fuehne, C., Peters, D. and Bayly, P., “Application of Generalized Floquet Theory to Numerical and Experimental Data,” presented at the Army Research Office Eighth International Workshop on Dynamics and Aeroelastic Stability Modeling, Pennsylvania State University, October 18-19, 1999.
Wasileski, Bryan and Peters, David A., “Simulation of Rotorcraft Response Including the Possibility of Vortex- Ring State,” Proceedings of the 56th Annual National Forum of the AHS, Virginia Beach, May 1-4, 2000.
Peters, David A. and Nelson, Adria M., “A Two-Dimensional Rotor Inflow Model Developed in Closed Form from a Galerkin Approach,” Proceedings of the 18th AIAA Applied Aerodynamics Conference, Denver, Colorado, Aug. 14-17, 2000, Paper AIAA-2000-4119.
Prasad, J.V.R. and Peters, David A., “Inflow Modeling for Maneuvering and In-Ground Effect Flight,” Huntsville Simulation Conference, Huntsville, AL, Oct. 4-5, 2000.
Peters, David A. and Nelson, Adria M., “A Dynamic Wake Model in Two Dimensions from a Galerkin Approach,” AHS Aeromechanics Specialists' Meeting, Atlanta, Georgia, Nov. 13-14, 2000.
Peters, David A. and Morillo, Jorge A., “Towards a Complete Dynamic Wake Model in Axial Flow,” AHS Aeromechanics Specialists' Meeting, Atlanta, Georgia, Nov. 13-14, 2000.
He, Yanyu, Cary, Andrew W., and Peters, David A. "Parametric and Dynamic Modeling for Synthetic Jet Control of a Post-Stall Airfoil," 39th AIAA Aerospace Sciences Meeting, Reno, Nevada, January 2001, Paper No. AIAA 2001-0733.
Peters, David A., Morillo, Jorge A., and Nelson, Adria M., “New Developments in Dynamic Wake Modeling for Dynamics Applications,” Proceedings of the 57th Annual Forum of the American Helicopter Society, Washington, D.C., May 9-11, 2001.
Prasad, J.V.R., Fanciullo, Todd, Jinggen, Zhao, and Peters, David A., “Towards a High Fidelity Rotor Inflow Model for Maneuvering and In-Ground Effect Simulation,” Proceedings of the 57th Annual Forum of the American Helicopter Society, Washington, D.C., May 9-11, 2001.
Prasad, J.V.R., Zhao, Jinggen, and Peters, David A., “Modeling of Rotor Dynamic Wake Distortion During Maneuvering Flight,” Proceedings of the AIAA Atmospheric Flight Mechanics Conference, Montreal, August 6-9, 2001, AIAA Paper 2001-4074..
Peters, David A., “A Personal Perspective on How the Space Race Molded a Partnership between my Generation, Universities, and the Aerospace Industry,” Invited paper, presented at the First National Conference on Recent Advances in Mechanical Engineering, Patras, Greece, Sept. 17-20, 2001.
Morillo, Jorge A. and Peters, David A., “A Three-Dimensional Unsteady Inflow Model from a Galerkin Approach,” Proceedings of the Ninth International Workshop on Aeroelasticity of Rotorcraft Systems, Army Research Office/ University of Michigan, Ann Arbor, Oct. 22-24, 2001.
Prasad, J.V.R., Zhao, J., and Peters, D.A., "Study on Dynamic Wake Distortion Effects During Helicopter Transient Maneuvering Flight," Proceedings of the Ninth International Workshop on Aeroelasticity of Rotorcraft Systems, Army Research Office, University of Michigan, Ann Arbor, Oct. 22-24, 2001.
Morillo, Jorge A. and Peters, David A., “Extension of Dynamic Inflow Models to Include Mass Injection and Off- Disk Flow," AIAA 40th Aerospace Sciences Meeting & Exhibit, Reno, Nevada, January 14-17, 2002, Paper No. AIAA 2002-0716.
Morillo, Jorge A. and Peters, David A., “Comparison of Exact Time-Domain Solutions for Rotor Inflow with Finite-State Results,” Proceedings of the 43rd AIAA/ASME/ASCE/AHS Structures, Structural Dynamics and Materials Conference, Denver, April 22-25, 2002.
Rojas, Pilar, Peters, David A., and Karunamoorthy, Swami, “Two-Dimensional Inflow Above Disk for an Actuator Strip in Axial Flow,” Proceedings of the 20th AIAA Applied Aerodynamics Conference, St. Louis, June 24-26, 2002, AIAA Paper No. 2002-2814.
Zhao, Jinggen, Prasad, J.V.R., and Peters, David A., "Dynamic Rotor Wake Distortion Model for Helicopter Maneuvering Flight," Proceedings of the American Helicopter Society 58th Annual Forum, Montreal, June 11-13, 2002.
Morillo, Jorge A. and Peters, David A., “Convergence of a Complete Finite-State Inflow Model of a Rotor Flow Field,” 28th European Rotorcraft Forum, Bristol, England, September 17-20, 2002.
Bayly, Philip V., Mann, Brian P., Schmitz, Tony L., Peters, David A., Stepan, Gabor, and Insperjev, Tamas, “Effects of Radial Immersion and cutting Direction on Chatter Instability in End-Milling,” Proceedings of the ASME Manufacturing Engineering Division, IMECE, November 2002.
Krothapalli, Krishnamohan, R., Prasad, J. V. R., and Peters, David A., “A Generalized Dynamic Wake Model with Wake Distortion Effects,” Proceedings of the 54th Annual National Forum of the American Helicopter Society, Washington, DC, May 20-22, 1998, pp. 527-536.
Zhao, J., Prasad, J.V.R., and Peters, D.A., “Investigation of Wake Curvature Dynamics for Helicopter Maneuvering Flight Simulation,” Proceedings of the AHS International 59th Annual Forum, Phoenix, May 6-8, 2003, pp. 1887-1901.
Peters, David A., “Review of Dynamic Wake Models for Application to Dynamics and Stability,” Proceedings of the 4th Australian Pacific Vertiflite Conference on Helicopter Technology, Melbourne, July 21-23, 2003.
Yu, Ke and Peters, David A., “Use of Potential Flow State-Space Inflow Modeling for Mass Source Rotors,” 29th European Rotorcraft Forum, Friedrichshafen, Germany, September 16-18, 2003, Paper No. 68.
Makinen, Stephen M. and Peters, David A., “Comparison of Prandtl and Goldstein Optimum Propeller Solutions with Dynamic Wake Models,” Tenth International Workshop on Aeroelasticity of Rotorcraft Systems, Atlanta, November 3-5, 2003.
Yu, Ke and Peters, David A., “Net Mass Flow Components in a Three-Dimensional, Unsteady Rotor Inflow Model,” ASME International Mechanical Engineering Congress and Exhibition, Washington, D.C., November 17–21, 2003, ASME Paper IMECE2003 – 42459.
Hsieh, Mong-Che Antonio, Peters, David A. and McDonnell, William R., “Stability and Response of a Forward- Mounted Servo-Tab Driven by a Sub-Servo-Tab,” American Helicopter Society Fourth Decennial Specialist’ Conference on Aeromechanics, San Francisco, January 21-23, 2004.
Yu, Ke and Peters, David A., “Three-Dimensional State-Space Modeling of Ground Effect in Dynamic Wake,” 60th Annual National Forum of the American Helicopter Society, Alexandria, VA, June 7-10, 2004, pp 100- 121.
Zhao, J., Prasad, J.V.R., and Peters, D.A., “Validation of a Rotor Dynamic Wake Distortion Model for Helicopter Maneuvering Flight Simulation,” 60th Annual National Forum of the American Helicopter Society, Alexandria, VA, June 7-10, 2004.
Makinen, Stephen and Peters, David. “Comparison of Dynamic Wake Models with Closed-Form Optimum Propeller Solutions,” Proceedings of the 30th European Rotorcraft Forum, Marseilles, France, September 14- 16, 2004. Paper No. 9.
Yu, Ke and Peters, David, “A Closed-Form Representation of Three-Dimensional State-Space Influence Coefficients,” Proceedings of the 61st Annual National Forum of the American Helicopter Society, Grapevine, TX, June 1-3, 2005.
Zhao, Jinggen, Prasad, J.V.R., and Peters, David A., “Effect of Rotor Wake Distortion on the Stability of Flapping Dynamics,” Proceedings of the 61st Annual National Forum of the American Helicopter Society, Grapevine, TX, June 1-3, 2005.
Hsieh, Mong-che Antonio and Peters, David A., “Convergence and Conditioning of Dynamic Wake Models for Flight Dynamics,” Proceedings of the 31st European Rotorcraft Forum, Florence, Italy, September 13-15, 2005.
Peters, David A and Ormiston, R.A., “Calculation of Induced Power and Minimum Induced Power by the Peters- He Dynamic Wake Model,” Presented at the Eleventh International Workshop on Rotorcraft Dynamics and Aeroelasticity, Boca Raton, Florida, October 12-14, 2005.
Prasad, J.V.R. and Peters, David A., “Finite-State Rotor Inflow Models for Maneuvering Flight,” Presented at the Eleventh International Workshop on Rotorcraft Dynamics and Aeroelasticity, Boca Raton, Florida, October 12-14, 2005.
Peters, David A. and Hsieh, Mong-che Antonio, “Improvements to Robustness of Off-Disk Finite-State Wake Models,” Presented at the Eleventh International Workshop on Rotorcraft Dynamics and Aeroelasticity, Boca Raton, Florida, October 12-14, 2005.
Yu, Ke and Peters, David, “Application of State-Space Wake Models to Full and Partial Ground Effect,” Second International Basic Research Conference on Rotorcraft Technology, Nanjing, China, Nov. 7-9, 2005.
Peters, David A., Hsieh, Mong-che Antonio, and Torrero, Almudena, “A State-Space Airloads Theory for Flexible Airfoils,” Proceedings of the 62nd Annual National Forum of the American Helicopter Society, Phoenix, May 9-11, 2006, pp. 1806-1823.
Karunamoorthy, Swami, Garcia-Duffy, Cristina, and Peters, David, “Study of Root Inflow for a Propeller Blade of Infinite Length,” Proceedings of the Heli-Japan Conference, Nagoya, Aichi, Japan, Nov. 15-17, 2006, paper No. 7222-2.
Peters, David A. and Garcia-Duffy, Cristina, “Optimum Rotor Performance in Axial Flow by Finite-State Methods,” Proceedings of the 63rd AHS Forum, Virginia Beach, May 2007.
Peters, David A., “Two-Dimensional Incompressible Unsteady Airfoil Theory – an Overview,” Charles E. Schmidt Distinguished Visiting Professor Lecture, Florida Atlantic University, November 14, 2007.
Peters, David and Ahaus, Loren, “Correlation of Unsteady State-Space Airloads Theory to Oscillating Airfoil Wind Tunnel Data,” Proceedings of the Tenth Pan American Congress of Applied Mechanics, Cancun, Mexico, January 7-11 2008.
Wasileski, Bryan and Peters, David, “A State-Space Free-Vortex Hybrid Wake Model for Helicopter Rotors,” AHS Specialists’ Conference on Aeromechanics, San Francisco, January 23-25, 2008.
Garcia-Duffy, Cristina, and Peters, David A., “Theoretical Optimum Rotor Performance in Hover and Climb,” AHS Specialists’ Conference on Aeromechanics, San Francisco, January 23-25, 2008.
Thepvongs, Smith, Cesnik, Carlos E.S., Palacios, Rafael, and Peters, David A., “Finite-State Aeroelastic Modeling of Rotating Wings with Deformable Airfoils,” Proceedings of the 64th Annual National Forum of the American Helicopter Society, Montreal, Canada, April 29 – May 1, 2008.
Bain, Jeremy, Sankar, Lakshmi, Prasad, J.V.R., Peters, David, and He, Chengjian, “Computational Modeling of Dynamically Deformable Leading Edge in High Speed Forward Flight,” Proceedings of the AIAA 4th Flow Control Conference, Seattle, Washington, June 23-26, 2008.
Ahaus, Loren, and Peters, David, “Comparison of Finite-State Dynamic Stall Theory with Unsteady Data,” Proceedings of the 34th European Rotorcraft Forum, Liverpool, England, September 16-19, 2008.
Peters, David A. and Lieb, Sydnie M., “Significance of Floquet Eigenvalues and Eigenvectors for the Dynamics of Time-Varying Systems,” Proceedings of the AHS International 65th Annual National Forum & Technology Display, Grapevine, Texas, May 27-29, 2009, Vol. III, pp. 2529-2558.
Garcia-Duffy, Cristina, Peters, David A., and Ormiston, Robert A., “Optimum Rotor Performance in Skewed Flow Based on Actuator-Disk Theory,” Proceedings of the 27th AIAA Applied Aerodynamics Conference, San Antonio, Texas, June 22-25, 2009, AIAA-2009-3517.
Peters, David A., Burkett, Andrew, and Lieb, Sydnie M., “Root Corrections for Dynamic Wake Models,” Proceedings of the 35th European Rotorcraft Forum, Hamburg, Germany, September 22-25, 2009.
Peters, David A., Hsieh, Antonio, and Garcia-Duffy, Cristina, “A Complete Finite-State Inflow Theory from the Potential Flow Equations,” Keynote Lecture, 3rd International Basic Research Conference on Rotorcraft Technology, Nanjing, China, Oct. 14-16, 2009.
Garcia-Duffy, Cristina, Hsieh, Antonio, and Peters, David A., “A Complete Nonlinear Induced Flow Theory for Iquaçu, Peraná, Brazil, January 4-8, 2010.
Ahaus, Loren and Peters, David A., “Unified Airloads Model for Morphing Airfoils in Dynamic Stall,” Proceedings of the AHS Specialist’s Conference on Aeromechanics, San Francisco, January 20-22, 2010.
Ahaus, Loren, Kahler, Alex J., and Peters, David A., “Simplified Analysis of Sectional Airloads on Morphing Airfoils,” Proceedings of the AHS International 66th Annual Forum and Technology Display, Phoenix, AZ, May 11-13, 2010.
Ahaus, Loren, Liggett, Nicholas, Peters, David A., and Smith, Marilyn J., “Unsteady Aerodynamics of Single and Multi-Element Airfoils,” 38th European Rotorcraft Forum, Paris, France, September 7-9, 2010.
Ahaus, Loren A., Peters, David A., and Runge, Hans P., “Stall Alleviation Using Multi-Element Airfoils,” Proceedings of the AHS Specialist's Meeting, Technologies to Support the Next Generation of Vertical Lift Aircraft and Beyond, Fort Worth, Texas, February 23-25, 2011.
File, Chad, Peters, David A., and Ormiston, Robert A., "Optimum Rotor Performance with Realistic Constraints by Finite-State Induced Flow Methods," Proceedings of the 67th Annual National Forum of the American Helicopter Society, Virginia Beach, Virginia, May 3-5, 2011.
Peters, David, Loyet, Jessica, Chan, Wesley, and Ahaus, Loren, "Optimum Operational Parameters for Tethered, Yawed Wind Turbines," proceedings of the 29th AIAA Applied Aerodynamics Conference, Honolulu, Hawaii, June 27-30, 2011.
Rong, Xi, Peters, David A., and Fei, Zhongyang, "Optimum Pitch Settings and RPM for Tethered, Yawed Wind Turbines," Proceedings of the 30th ASME Wind Energy Symposium and 50th AIAA Aerospace Sciences Meeting, Nashville, Tennessee, January 9-12, 2012, AIAA Paper 2012-1071.
Gaonkar, Gopal, "Reflections on Professor Kurt Hohenemser's Pioneering Contributions to Helicopter Theory and Development," Proceedings of the AHS Annual National Forum, Ft. Worth, Texas, May 1-3, 2012.
Ahaus, Loren, Roe, Robert, Peters, David A., and Rong, Xi, "Representation of Morphing Airfoil Thickness in Dynamic Stall Simulations," Proceedings of the AIAA 30th Applied Aerodynamics Conference, New Orleans, LA, June 25-28, 2012.
Fei, Zhongyang and Peters, David A. "A Rigorous Solution for Finite-State Inflow throughout the Flowfield–– Including within the Wake," Proceedings of the AIAA 30th Applied Aerodynamics Conference, New Orleans, LA, June 25-28, 2012.
Fei, Zhongyang and Peters, David A., "Eigenvalues and Mode Shapes for the Complete Rotor Dynamic Wake Model," Proceedings of the AIAA 30th Applied Aerodynamics Conference, New Orleans, LA, June 25-28, 2012.
File, Chad and Peters, David A., and Modarres, Ramin, "Blade Number Effect on Optimum Rotor Performance in Axial Flow by Dynamic Wake Theory with Improved Swirl Correction," Proceedings of the 38th European Rotorcraft Forum, Amsterdam, Sept. 4-7, 2012.
Modarres, Ramin and Peters, David A., "Efficient Solution of Goldstein’s Equations for Propellers With Application to Rotor Induced Power Efficiency,” Proceedings of the 38th European Rotorcraft Forum, Amsterdam, Sept. 4-7, 2012.
Fei, Zhongyang, and Peters, David A., “Inflow Below the Rotor Disk for Skewed Flow by the Finite-State, Adjoint Method,” Proceedings of the 38th European Rotorcraft Forum, Amsterdam, Sept. 4-7, 2012.
Wasikowski, Mark, Ahaus, Loren, and Peters, David. A., "A Fundamental Investigation of Stall Flutter," Proceedings of the 69th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 21-23, 2013.
Liebschutz, Rob and Peters, David A., “Optimization of the Wind Turbine Power Coefficient Using Collective and Cyclic Pitch inYawed Flow,” Proceedings of the 69th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 21-23, 2013.
Fei, Zhongyang and Peters, David. A., "Applications of Generalized Dynamic Wake Theory to the Flow in a Rotor Wake," Proceedings of the 69th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 21-23, 2013.
Nowak, Morgan, Prasad, J.V.R., Xin, Hong, and Peters, David, “A Finite State Inflow Model for a Multi-Rotor System in Forward Flight,” Proceedings of the 69th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 21-23, 2013.
Modarres, Ramin and Peters, David. A., "Theoretical Optimal Efficiencies of Rotors in Hover including Wake Swirl and Wake Contraction," Proceedings of the 69th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 21-23, 2013.
Peters, David. A. and Chugani, Jesse, "Dynamic Wake Solutions for Rotors Transitioning between Powered and Windmill Braking Modes," Proceedings of the 69th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 21-23, 2013.
Hong, JunSoon (Sean) and Peters, David A., "A Completely Nonlinear Form of the Pitt-Peters Dynamic Wake Model," submitted to the 2013 Robert Lichten Award competition.
Fei, Zhongyang and Peters, David A., "Accurate Computation of Flow Below the Rotor Disk by a Finite-State Method," submitted to the AIAA 31st Applied Aerodynamics Conference, San Diego, CA, June 24-27, 2013.


Technical Comments

Hodges, Dewey H., Peters, David A., Pierce, G. Alvin, and Jonnalagadda, V. R. P., “Comment on ‘Nonlinear Deformation of Rotating Beams – An Alternate Approach’,” Journal of the American Helicopter Society, Vol. 25, No. 3, July 1980, pp. 70-71.
Peters, David A., “Comment on ‘Calculation of Rotor Impedance for Articulated Rotor Helicopters in Forward Flight’,” Journal of Aircraft, Vol. 17, No. 8, August 1980, p. 607.
Peters, David A. and Hodges, Dewey H., “Discussion of ‘On the Dynamic Response of a Single-Degree-of- Freedom Structure Attached to the Interior of a Rotating Rigid Ring’,” Journal of Applied Mechanics, Vol. 55, No. 3, 1988, pp. 747-748.


Other Publications

Peters, David A., "Application of the Floquet Transition Matrix to Problems of Lifting Rotor Stability", Master of Science Thesis, Washington University, June 1970, advisor Kurt Hohenemser.
Peters, David A., “An Approximate Solution for the Free Vibrations of Rotating Uniform Cantilever Beams,” NASA TM X-62,299, September 1973, (Revised 8-28-78).
Peters, David A., “Deformed Blade Coordinate System Transformation,” Appendix to NASA TN D-7818, December 1974.
Peters, David A., Flapping Response Characteristics of Hingeless Rotor Blades by a Generalized Harmonic Balance Method, Ph.D. Thesis, Stanford University, June 1974, advisor Art Bryson.
Peters, David A. and Ormiston, R. A., “Flapping Response Characteristics of Hingeless Rotor Blades by a Generalized Harmonic Balance Method,” NASA TN D-7856, February 1975.
Peters, David A., “An Approximate Closed-Form Solution for Lead-Lag Damping of Rotor Blades in Hover,” NASA TM X-62,425, April 1975.
Diboll, W. B. and Peters, David A., “A Simulation Study of Switching Operations Preceding the Wenatchee Incident,” Technical Report prepared for E. E. Du Pont de Nemours and Company, June 1975.
Diboll, W. B. and Peters, David A., “The Wenatchee Incident: Estimated Velocity on the Impacting Consist,” Technical Report prepared for E. I. Du Pont de Nemours and Company, September 1975.
Peters, David A. and Yin, S. K. “Non-Destructive Impact Between Railroad Cars: Experimental and Analytical Study,” Technical Report No. FRA-ORD-76/247, March 1976.
Peters, David A., Szabo, B. A. and Diboll, W. B., “Tank Car Head Puncture Mechanisms,” Technical Report No. FRA-ORD-76/269, June 1976.
Peters, David A., “Dynamic Analysis of the ACF Fabricated Truck,'' Technical Report prepared for AMCAR Division ACF Industries, April 1977.
Peters, David A., “Effect of Lading Mobility on Rock-and-Roll Dynamics,” Technical Report prepared for AMCAR Division, ACF Industries, November 1977.
Hohenemser, K. H., Swift, Andrew H. P. and Peters, David A., “A Definitive Generic Study for Sailwing Wind Energy Systems,” Final Technical Report prepared for Midwest Research Institute, May 1979.
Hodges, Dewey H., Ormiston, Robert A., and Peters, David A., “On the Non-Linear Deformation Geometry of Euler-Bernoulli Beams,” NASA TP-1566, April 1980.
Peters, David A., “Analysis of the Assumptions and Derivations of the Root Perturbation Method,” prepared for Paragon Pacific, Inc., El Segundo, California, November 1980.
Hohenemser, K. H., Swift, Andrew H. P., and Peters, David A., “The Yawing of Wind Turbines with Blade Cyclic Pitch Variation,” SERI/TR-8085-15, December 1980.
Peters, David A., “Analysis and Design of Ceiling Fans,” prepared for Emerson Electric, Environmental Products Division, St. Louis, Missouri, March 1981.
Peters, David A., “Modification of the RPM Code to Give Correct Eigenvalues and Periodic Eigenvectors,” prepared for Paragon Pacific, May 1981.
Chen, Han Sheng and Peters, David A., “Optimization of Auto-Pilot Equations for Rapid Estimation of Helicopter Control Settings,” Interim Technical Report No. 1, ARO Grant DAAG-29-80-C-0092, November 1981.
Ormiston, R. A., Warmbrodt, W., Hodges, D. H., and Peters, D. A., “Survey of Army/NASA Rotorcraft Aeroelastic Research,” NASA TM 101026, October 1988.
Curtiss, Howard C. Jr., and Peters, David A., “Aeroelastic Response of Rotorcraft,” Book Chapter, A Modern Course in Aeroelasticity, Earl H. Dowell (Editor), Third Edition, Kluwar Academic Publishers, Boston, 1995, pp. 370-437; Fourth Edition, 2004, pp. 377-452.
Peters, David A., “Low Speed Rear-End Impacts: an Overview,” The Consultants Perspective, Sugar Publications, FORCON International, Brandon, Florida, Spring 1997.
Peters, David A., “Analysis of Amusement Park Rides,” The Consultants Perspective, Sugar Publications, FORCON International, Brandon, FL, Fall 1999.


Paper Awards

Hou, Lin-Jun, “Development of Displacement hp-Version Space-Time Finite Elements with Triangular Elements,” 33rd AIAA SDM conference, Dallas Texas, April 13-15, 1992, winner of Jefferson Goblet Student Paper Award.
Peters, David A., Morillo, Jorge A., and Nelson, Adria M., “New Developments in Dynamic Wake Modeling for Dynamics Applications,” Proceedings of the 57th Annual Forum of the American Helicopter Society, Washington, D.C., May 9-11, 2001, winner of Best Paper in Flight Simulation Sessions.
Zhao, J., Prasad, J.V.R., and Peters, D.A., “Investigation of Wake Curvature Dynamics for Helicopter Maneuvering Flight Simulation,” Proceedings of the AHS International 59th Annual Forum, Phoenix, May 6-8, 2003, pp. 1887-1901.
Peters, David A., Hsieh, Mong-che Antonio, and Torrero, Almudena, “A State-Space Airloads Theory for Flexible Airfoils,” Proceedings of the 62nd Annual National Forum of the American Helicopter Society, Phoenix, May 9-11, 2006, pp. 1806-1823, winner of Best Paper in Aerodynamics Sessions.




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