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Dr. Inderjit Chopra
Alfred Gessow Professor
Director Alfred Gessow
Rotorcraft Center
Aerospace Engineering
University of Maryland
College Park, MD 20742
Ph:  301.405.1122
Fax: 301.314.9001
chopra@umd.edu


 


Publications : Recent Conference Procedings

2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | Archives

2007

  • Harishikeshavan, V., Sirohi, J., Tishchenko, M. and Chopra, I., “Design of a Shrouded Rotor Micro Air Vehicle wit Anti-Torque Vanes,” AHS International Specialists’ Meeting on Unmanned Rotorcraft, Chandler, AZ, January 2007.
  • Pereiera, J. and Chopra, I., “Forward Flight Performance Measurements of a Shrouded Rotor for MAV Applications,” AHS International Specialists’ Meeting on Unmanned Rotorcraft, Chandler, AZ, January 2007.
  • Benedict, M., Sirohi, J. and Chopra, I., “Design and Testing of a Cycloidal-Rotor MAV,” AHS International Specialists’ Meeting on Unmanned Rotorcraft, Chandler, AZ, January 2007.
  • Fitchett, B. and Chopra,I., “A Biological Inspired Flapping Rotor for Micro Air Vehicles,” AHS International Specialists’ Meeting on Unmanned Rotorcraft, Chandler, AZ, January 2007.
  • Gupta, N., Copp, P. and Chopra, I., “Flight Dynamics Model for Pitch and Heave Motion of a Rotary Wing Micro Air Vehicle,” AHS International Specialists’ Meeting on Unmanned Rotorcraft, Chandler, AZ, January 2007.
  • Singh, B. and Chopra, I., “Aeroelastic Analysis of Insect-Based Hover-Capable Flapping Wings,” AHS International Specialists’ Meeting on Unmanned Rotorcraft, Chandler, AZ, January 2007.

2006

  • Nagaraj, V. T. and Chopra, I., “Assessment of Tip Driven and Shaft Driven Rotors for Heavy Lift Applications,” Proceedings of the AHS Vertical Lift Aircraft Design Conference, San Francisco, CA, January 2006.
  • Couch, R., Sirohi, J. and Chopra, I., “Testing and Modeling of NiMnGa Ferromagnetic Shape Memory Alloy for Static and Dynamic Loading Conditions,” Proceedings of the SPIE's 13th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2006.
  • Singh, B. and Chopra, I., “Dynamics of Insect-Based Flapping Wings: Loads Validation,” AIAA 2006- 1663,47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Newport, RI, April 2006.
  • Pereira, J. and Chopra, I., “Pressure Measurements on the Shrouded Surface of MAV-Scale Shrouded Rotors,” Proceedings of 62nd Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2006.
  • Beasley, B. and Chopra, I., “Planar and Nonplanar Membrane Wing Planform for the Design of a Flapping-Wing Micro Air Vehicle,” Proceedings of 62nd Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2006.
  • Abhishek, A., Datta, A. and Chopra, I., “Prediction of UH-60A Structural Loads Using Multibody Analysis and Swashplate Dynamics,” Proceedings of 62nd Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2006.
  • Falls, J., Datta, A. and Chopra, I., “Integrated Trailing-Edge Flaps and Servotabs for Helicopter Primary Control,” Proceedings of 62nd Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2006.
  • Sirohi, J., Parsons, E. and Chopra, I., “Cycloidal Rotor Micro Air Vehicle,” Proceedings of 62nd Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2006.
  • Bao, J., Allen, K. and Chopra, I., “Design and Test of A Mach Scale Swashplateless Rotor Using Smart Trailing-Edge Flaps,” Proceedings of 62nd Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2006.
  • Brindejonc, A., Sirohi, J. and Chopra, I., “Design and Testing of an Autorotative Payload Delivery System", Proceedings of 62nd Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2006.
  • Datta, A. and Chopra, I., “Prediction of UH-60 Vibratory Loads at Three Critical Level Flight Conditions,” 32nd European Rotorcraft Forum, Maastricht, Netherlands, September 2006

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2005

  • Hein, B. and Chopra, I., “Hover Performance of a Micro Air Vehicle: Rotor at Low Reynolds Number,” AHS International Specialists’ Meeting on Unmanned Rotorcraft: Design, Control and Testing, Phoenix, AZ, January 2005.
  • Pereira, J. and Chopra, I.. “An Investigation of the Effects of Shroud Design Variables on the Hover Performance of a Shrouded-Rotor Micro Air Vehicles,” AHS International Specialists’ Meeting on Unmanned Rotorcraft: Design, Control and Testing, Phoenix, AZ, January 2005.
  • Singh, B., Chopra, I., Ramasamy, M. and Leishman, J. G., “Insect-Based Flapping Wings for Micro Hovering Air Vehicles: Experimental Investigation,” AHS International Specialists’ Meeting on Unmanned Rotorcraft: Design, Control and Testing, Phoenix, AZ, January 2005.
  • Parson, E., Sirohi, J. and Chopra, I., “Micro Air Vehicle: Cycloidal Rotor Concept,” AHS International Specialists’ Meeting on Unmanned Rotorcraft: Design, Control and Testing, Phoenix, AZ, January 2005.
  • Couch, R. N. and Chopra, I., “Quasi-Steady Modeling of NiMnGa Magnetic Shape Memory Alloy,” SPIE's 12th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2005.
  • Ellison, J, Sirohi, J. and Chopra, I., “Comparison of Piezoelectric and Magnetostrictive Hydraulic Hybrid Actuators,” SPIE's 12th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2005.
  • Singh, B. and Chopra, I., “Aerodynamics of Insect-Based Flapping Wings for Micro Hovering Air Vehicles,” AIAA-2005-2293, 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Austin, TX, April 2005.
  • Falls, J. and Chopra, I., Piezobimorph Actuated Servotab for Controlling a Trailing-Edge Flap for Rotor Vibration Suppression,” AIAA-2005-1961, 13th AIAA/ASME/AHS Adaptive Structures Conference, Austin, TX, April 2005.
  • Nagaraj, V. and Chopra, I., “Assessment of Helicopter Wire Strike Accidents and Safety Warning and Protection Devices,” Proceedings of 61st Annual Forum of the American Helicopter Society, Grapevine, TX June 2005.
  • Datta, A. and Chopra, I., “Prediction of UH-60A Dynamic Stall Loads in High Altitude Level Flight Using CFD/CSD Coupling,” Proceedings of 61st Annual Forum of the American Helicopter Society, Grapevine, TX June 2005.
  • Roget, B. and Chopra, I., “Closed-Loop Test of a Rotor with Individually Controlled Trailing-Edge Flaps for Vibration Reduction,” Proceedings of 61st Annual Forum of the American Helicopter Society, Grapevine, TX June 2005.
  • Sirohi, J., Tishchenko, M. and Chopra, I., “Design and Testing of a Micro-Aerial Vehicle with a Single Rotor and Turning Vanes,” Proceedings of 61s Annual Forum of the American Helicopter Society, Grapevine, TX June 2005.
  • Brindejonc, A., Sirohi, J. and Chopra, I., “Design and Flight Testing of an Autonomous Payload Delivery System: The Autobody,” Proceedings of 61st Annual Forum of the American Helicopter Society, Grapevine, TX June 2005.
  • Datta, A., Nixon, M. and Chopra, I., “Prediction of Rotor Loads with the Emergence of Rotorcraft CFD,” Proceedings of 31st European Rotorcraft Forum, , Italy, September 2005.
  • Bao, J., Falls, J. and Chopra, I., “Development of a Swashplateless Rotor,” Proceedings of 2nd International Basic Research Conference on Rotorcraft Technology, Nanjing, China, November 2005.
  • Robbins, D. H. and Chopra, I., “The Effect of Laminate Kinematic Assumption on the Global Response of Actuated Plates,” 16th International Conference on Adaptive Structures and Technologies, Paris, France, October 2005.

2004

  • Roget, B. and Chopra, I., “Development and Testing of an Individual Blade Control Algorithm for Vibration Reduction of a Dissimilar Rotor,” AHS 4th Decennial Specialists’ Conference on Aeromechanics, San Francisco, CA, January 2004.
  • Atulsimha, J., Flatau, A. B. and Chopra, I., “Effect of Stoichiometry on the Behavior of Iron-Gallium,” SPIE's 11th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2004.
  • Falls, J. and Chopra, I., “Design and Testing of a Servotab Actuated Trailing-Edge Flap for Rotor Vibration Suppression,” SPIE's 11th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2004.
  • Ellison, J. A. and Chopra, I., “Design and Testing of Bidirectional Magnetostrictive-hydraulic Hybrid Actuator,” SPIE's 11th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2004.
  • Couch, R. N. and Chopra, I., “Quasi-Static Modeling of NiMnGa Magnetic Shape Memory Alloy,” SPIE's 11th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2004.
  • Sirohi, J., Nagaraj, V. T. and Chopra, I., “Design and Testing of a Hingeless Rotor for Autonomous Autorotation,” Proceedings of 60th Annual Forum of the American Helicopter Society, Baltimore, MD, June 2004.
  • Pereira, J. and Chopra, I., “Hover Performance of a Small-Scale Shrouded Rotor for Micro Air Vehicle,” Proceedings of 60th Annual Forum of the American Helicopter Society, Baltimore, MD, June 2004.
  • Bao, J, Chopra, I. and Bernhard, A., “Wind Tunnel Testing of Low Vibration Mach Scale Rotor with Composite Tailored Blades,” Proceedings of 60th Annual Forum of the American Helicopter Society, Baltimore, MD, June 2004.
  • Singh, B. and Chopra, I., “Wing Design and Optimization for a Flapping Wing Micro Air Vehicle,” Proceedings of 60th Annual Forum of the American Helicopter Society, Baltimore, MD, June 2004.
  • Shen, J. and Chopra, I., “Swashplateless Trailing-Edge Flap Helicopter Rotor in Maneuvering and Autorotative Flights,” Proceedings of 60th Annual Forum of the American Helicopter Society, Baltimore, MD, June 2004.
  • Datta, A., Sitaraman, J., Chopra, I., and Baeder, J., “Improved Comprehensive Analysis for Prediction of Rotor Vibratory Loads in High-Speed Forward Flight,” Proceedings of 60th Annual Forum of the American Helicopter Society, Baltimore, MD, June 2004.
  • Roget, B. and Chopra, I., “Development and Testing of an Individual Blade Control Algorithm for Vibration Reduction of a Dissimilar Rotor,” Proceedings of 60th Annual Forum of the American Helicopter Society, Baltimore, MD, June 2004.
  • Shen, J. and Chopra, I., “A Swashplateless Helicopter Rotor System with Trailing-Edge Flaps for Primary and Vibration Control,” 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Palm Springs, CA, April 2004.
  • Couch, R., Sirohi, J. and Chopra, I., “A Comprehensive Quasi-Static Model for NiMnGa Magnetic Shape Memory Alloy,” 15th International Conference on Adaptive Structures and Technologies, Bar Harbor, Maine, October 2004.

2003

  • Yoo, J., Sirohi, J., Wereley, N. M. and Chopra, I., “Magnetorheological Hydraulic Actuator Driven by a Piezoelectric Pump,” SPIE's 10th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2003.
  • Couch, R. N. and Chopra, I., “Experimental Characterization of NiMnGa Magnetic Shape Memory Alloy Rods under Dynamic Magnetic Field,“ SPIE's 10th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2003.
  • Atulsimha, J. and Chopra, I., “Testing of Torsional SMA Actuator in a Rotating Environment for a Variable Twist Tiltrotor Blade,” 11h AIAA/ASME/AHS/ Adaptive Structures Conference, Norfolk, VA, April 2003.
  • Sirohi, J. Cadou, C. and Chopra, I., “Performance Modeling of a Piezohydraulic Actuator,” 11h AIAA/ASME/AHS/ Adaptive Structures Conference, Norfolk, VA, April 2003.
  • Bao, J, Nagaraj, V. T., Chopra, I. and Bernhard, A., “Design and Hover Test of Low Vibration Mach Scale Rotor with Twisted Composite Tailored Blade,” 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Norfolk, VA, April 2003.
  • Singh, B. and Chopra, I., “A Comprehensive Aeroelastic Analysis for Two-Bladed Tiltrotors,” 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Norfolk, VA, April 2003.
  • Tarascio, M. J. and Chopra, I., “Design and Development of a Thrust Augmented Entomopter: An Advaned Flapping Wing Micro Hovering Air Vehicle,” Proceedings of 59th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2003.
  • Shen, J., Chopra, I. and Johnson, W., “Evaluation of Trailing-Edge Flaps for Simultaneous Primary Controls and Vibration Minimization of an Ultralight Helicopter,” Proceedings of 59th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2003.
  • Datta, A. and Chopra, I., “Validation of Structural and Aerodynamic Modeling Using UH-60 Flight Test Data,” Proceedings of 59th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2003.
  • Sitaraman, J., Baeder, J. and Chopra, I., “Validation of UH-60 Rotor Blade Aerodynamic Characteristics Using CFD,” Proceedings of 59th Annual Forum of the American Helicopter Society, Phoenix, AZ, May 2003.
  • Sitaraman, J., Datta, A., Baeder, J. and Chopra, I., “Fundamental Understanding and Prediction of Rotor Vibratory Loads in High-Speed Forward Flight,” Proceedings of 29th European Rotorcraft Forum, Friedrichshafen, Germany, September 2003.
  • Sirohi, J. and Chopra, I., “Measurement of the Dynamic Response of Piezohydraulic Actuator,” 14th International Conference on Adaptive Structures and Technologies, Seoul National University, Seoul, Korea, October 2003.
  • Yoo, J. Sirohi, J., Wereley, N. and Chopra, I., “A Hybrid MR Piezohydraulic Actuator,” 14th International Conference on Adaptive Structures and Technologies, Seoul National University, Seoul, Korea, October 2003.

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2002

  • K. Singh and Chopra, I., “Design of an Improved Shape-Memory Alloy Actuated In-Flight Tab Deflection Mechanism for Helicopter Rotor Blades,” SPIE's 9th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2002.
  • Sirohi, J. and Chopra, I., “Design and Testing of a High Pumping Frequency Piezoelectric hydraulic Hybrid Actuator,” SPIE's 9th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2002.
  • Couch, R., Chopra, I. and Wuttig, M. R., “Experimental Characterization of NiMnGa Ferromagnetic Shape Memory Alloy Rods Under Variable Loading Conditions,” SPIE's 9th Annual International Symposium on Smart Structures and Materials, San Diego, Calif., March 2002.
  • Shen, J. and Chopra, I., “Actuation Requirements for a Swashplateless Helicopter Control System,” 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Denver, CO, April 2002.
  • Prahlad, H. and Chopra,I., “Development of SMA Torsional Actuators for Active Twist Rotor Blades,” 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Denver, CO, April 2002.
  • Roget, B. and Chopra, I., “Methodology for Individual Blade Control (IBC) of Helicopter with a Dissimilar Rotor,” 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Denver, CO, April 2002.
  • Singh, B. and Chopra, I., “Aeroelastic Stability of Two-Bladed Propellor/Pylon Systems in High Speed Flight,” 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Denver, CO, April 2002.
  • Bao, J., Chopra, I. and Bernhard, A., “Development of a Low Vibration Mach Scaled Rotor with Composite Couplings,” Proceedings of 58th Annual Forum of the American Helicopter Society, Montreal, Canada, June 2002.
  • Shen, J. and Chopra, I., “Stability and Loads of a Swashplateless Rotor with Smart Flaps,” Proceedings of 58th Annual Forum of the American Helicopter Society, Montreal, Canada, June 2002.
  • Datta, A. and Chopra, I., “Validation and Understanding of UH-60A Vibration Loads in Steady Level Flight,” Proceedings of 58th Annual Forum of the American Helicopter Society, Montreal, Canada, June 2002.
  • Prahlad, H. and Chopra, I., “Development of a Shape Memory Alloy Torsional Actuator for Active Twist of a Tilt Rotor Blade,” Proceedings of 58th Annual Forum of the American Helicopter Society, Montreal, Canada, June 2002.
  • Yang, M., Chopra, I. and Haas, D., “Sensitivity of Rotor Fault Induced Vibrations of Operational and Design Parameters,” Proceedings of 58th Annual Forum of the American Helicopter Society, Montreal, Canada, June 2002.
  • Nagaraj, V. T. and Chopra, I., “Consideration for High Speed Flight of Compound Helicopters,” Proceedings of 58th Annual Forum of the American Helicopter Society, Montreal, Canada, June 2002.
  • Roget, B. and Chopra, I., “Methodology for Individual Blade Control (IBC) of Helicopter with a Dissimilar Rotor,” Proceedings of 28th European Rotorcraft Forum, Bristol, UK, October 2002.
  • Shen, J. and Chopra, I., “Ultralight Helicopter with Trailing-Edge Flap for Primary Controls,” Proceedings of AHS Technical Specialists’ Meeting on Advanced Rotorcraft Technology and Life Saving Activities, Utsunomiya, Japan, November 2002.
  • Sirohi, J. and Chopra, I., “Design and Testing of High Pumping Frequency Piezoelectric-Hydraulic Hybrid Actuator,” International Conference on Adaptive Structures and Technologies, Potsdam, Germany, October 2002.

2001

  • Koratkar, N. and Chopra, I., “Wind Tunnel Testing of Mach-Scaled Active Flap Rotor,” 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Seattle, WA, April 2001.
  • Roget, B. and Chopra, I., “Trailing-Edge Flap Control Methodology for Vibration Reduction of Helicopter with Dissimilar Blades,” 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Seattle, WA, April 2001.
  • Shen, J. and Chopra, I., “Coupled Aeroelastic Stability of Trailing-Edge Flap Rotor with Smart Actuators,” 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Seattle, WA, April 2001.
  • Chopra, I., “Review of State-of-Art of Smart Structures and Integrated Systems,” ASME Adaptive Structures and Material Systems Prize Lecture, 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Seattle, WA, April 2001.
  • Lee, T. and Chopra, I., “Design of a Bidirectional Piezoelectric Actuator for Blade Trailing-Edge Flap,” SPIE's 8th Annual International Symposium on Smart Structures and Materials, Newport Beach, Calif., March 2001.
  • Sirohi, J. and Chopra, I., “Development of a Compact Piezoelectric-Hydraulic Hybrid Actuator,” SPIE's 8thAnnual International Symposium on Smart Structures and Materials, Newport Beach, Calif., March 2001.
  • Prahlad, H. and Chopra, I., “Design of Variable Twist Tiltrotor Blade Using SMA Actuators,” SPIE's 8th International Symposium on Smart Structures and Materials, Newport Beach, Calif., March 2001.
  • Yang, M., Chopra, I. and Haas, D. J., “Rotor-Fuselage Analysis for a Dissimilar Rotor with Single and Multiple Faults,” Proceedings of 57th Annual Forum of the American Helicopter Society, Washington DC, May 2001.
  • Koratkar, N. and Chopra, I., “Wind Tunnel Testing of a Mach-Scaled Rotor Model with Trailing-Edge Flaps,” Proceedings of 57th Annual Forum of the American Helicopter Society, Washington DC, May 2001.
  • Lee, T. and Chopra, I., Wind Tunnel Test of Blade Sections with Piezoelectric Trailing-Edge Flap Mechanism,” Proceedings of 57th Annual Forum of the American Helicopter Society, Washington DC, May 2001.
  • Koratkar, N. and Chopra, I., “Wind Tunnel Testing of a Smart Rotor with Trailing Edge Flaps,” International Conference on Adaptive Structures and Technologies, College Park, MD, October 2001.
  • Prahlad, H. and Chopra, I., “Shape Memory Alloy Torsional Actuators for Variable Twist Tiltrotor Blades,” International Conference on Adaptive Structures and Technologies, College Park, MD, October 2001.
  • Sirohi, J. and Chopra, I., “Compact Piezo-Hydraulic Hybrid Actuators,” International Conference on Adaptive Structures and Technologies, College Park, MD, October 2001.

2000

  • Koratkar, N. and Chopra, I., “Hover Testing of a Mach-Scaled Rotor Model with Trailing-Edge Flaps,” SPIE's 6th International Symposium on Smart Structures and Materials, Newport Beach, Calif., March 2000.
  • Lee, T. and Chopra, I., “Development of a Smart Trailing-Edge Flap Actuator with Multistage Stroke Amplifier,” SPIE's 6th International Symposium on Smart Structures and Materials, Newport Beach, Calif., March 2000.
  • Spencer, M. G., Sanner, R. M. and Chopra, I., “Closed-Loop Hover Test Results with a Neuro-Controller on a Piezo-Actuated Smart Rotor Blades,” SPIE's 6th International Symposium on Smart Structures and Materials, Newport Beach, Calif., March 2000.
  • Shen, J. and Chopra, I., “Aeroelastic Modeling of Trailing-Edge Flaps with Smart Material Actuators,” 41st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Atlanta, GA, April 2000.
  • Prahlad, H. and Chopra, I., “Development of an Adaptive Flexbeam for Rotorcraft Using Embedded Shape Memory Alloys (SMA),” 41st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Atlanta, GA, April 2000.
  • Sirohi, J. and Chopra, I., “Actuator Power Reduction Using Tuned L-C Oscillator Circuits,” 41st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum, Atlanta, GA, April 2000.
  • Koratkar, N. and Chopra, I., “Hover and Wind Tunnel Testing of a Mach-Scaled Rotor Model with Trailing-Edge Flaps,” 56th Annual Forum of the American Helicopter Society, Virginia Beach, VA, May 2000.
  • Bernhard, A. P. and Chopra, “Mach-Scale Testing of a Rotor-Model with Active Blade Tips,” 56th Annual Forum of the American Helicopter Society, Virginia Beach, VA, May 2000.
  • Yang, M. and Chopra, I., “Rotor System Health Monitoring Using Coupled Rotor-Fuselage Vibration Analysis,” 56th Annual Forum of the American Helicopter Society, Virginia Beach, VA, May 2000.
  • Epps, J. and Chopra, I., “in-flight Tracking of Helicopter Rotor Blades with Tabs Using Shape Memory Alloy Actuators, 56th Annual Forum of the American Helicopter Society, Virginia Beach, VA, May 2000.
  • Chopra, I., “Recent Progress on the Development of a Smart Rotor System,” Proceedings of the 26th European Rotorcraft Forum, Hague, Neatherlands, Sept. 2000.
  • Koratkar, N. and Chopra, I., “Development of an Active Rotor Blade with Trailing-Edge Flaps,” AHS Northeast Region Technical Specialists’ Meeting on Improving Rotorcraft Acceptance Through Active Control Technology, Bridgeport, CT, October 2000.
  • Shen, J. and Chopra, I., “Coupled Aeroelastic Stability of a Trailing-Edge Flap Rotor with Smart Actuators,” AHS Northeast Region Technical Specialists’ Meeting on Improving Rotorcraft Acceptance Through Active Control Technology, Bridgeport, CT, October 2000.
  • Bernhard, A. P. F. and Chopra, I., “Hover Test of an Active-Twist, Mach-Scale Rotor using a Piezo-Induced Bending-Torsion Actuator Beam,” AHS Northeast Region Technical Specialists’ Meeting on Improving Rotorcraft Acceptance Through Active Control Technology, Bridgeport, CT, October 2000.
  • Lee, T. and Chopra, I., “Wind Tunnel and Vacuum Chamber Testing of a Piezoelectric Double-Lever Actuator for Trailing-Edge Flap Control,” AHS Northeast Region Technical Specialists’ Meeting on Improving Rotorcraft Acceptance Through Active Control Technology, Bridgeport, CT, October 2000.
  • Prahlad, H., Epps, J. J. and Chopra, I., “In-Flight Tracking of Helicopter Rotor Blades Using Shape Memory Alloy Actuators,” AHS Northeast Region Technical Specialists’ Meeting on Improving Rotorcraft Acceptance Through Active Control Technology, Bridgeport, CT, October 2000.
  • Chopra, I., “Update on Developments in Application of Smart Structures Technology to Rotorcraft Systems,” International Conference on Adaptive Structures and Technologies, Nagoya, Japan, October 2000.

For years prior to 2000, see Conference Archives

For Journals, See Recent Journals

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