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Aerospace Faculty Profile

Dr. Inderjit ChopraDr. Inderjit Chopra
Interim Chair/Alfred Gessow Professor/Director,
Alfred Gessow Rotorcraft Center
Room 3148 Martin Hall
Research in helicopter dynamics and smart structures

Phone: (301) 405-1122
chopra@umd.edu | Personal Website
Curriculum Vitae | Alfred Gessow Rotorcraft Center


Education

  • M.E., Indian Institute of Science (Aeronautical Engineering)
  • Sc.D., Massachusetts Institute of Technology (Aeronautics & Astronautics)

Publications

  • Bao, J., Chopra, I. and Bernhard, A., “Development of Mach Scale Composite Tailored Rotors with Flap-Bending/Torsion Couplings for Vibration Reduction,” Journal of Aircraft, 2006.
  • Couch, R. and Chopra, I., “Constitutive Model of NiMnGa Ferromagnetic Shape Memory Alloy Bars” Accepted for Publication in Smart Material and Structures Journal, 2006.
  • Datta, A. and Chopra, I., “CFD/CSD Coupling for the Prediction of Rotor Vibratory Loads in High-speed Flight, Accepted for Publication in Journal of Aircraft, 2006.
  • Datta, A. and Chopra, I., “Validation of Structural and Aerodynamic Modeling Using UH-60A Flight Test Data,” Journal of the American Helicopter Society, Vol. 51, No. 1, Jan 2006.
  • Robbins, D. H. and Chopra, I., "The Effect of Laminate Kinematic Assumptions on the Global Response of Actuated Plates," Publication in Journal of Intelligent Material Systems and Structures, 2006.
  • Prahlad, H. and Chopra,I., “Development of SMA Torsional Actuators for Active Twist Rotor Blades,” Accepted for Publication in Journal of Intelligent Material Systems and Structures, 2006.
  • Sirohi, J. and Chopra, I., "Measurement of the Dynamic Response of Piezohydraulic Actuator," Accepted for Publication in Journal of Intelligent Material Systems and Structures, 2006.
  • Shen, J., Yang, M. and Chopra, I., "Swashplateless Helicopter Rotor System with Active Trailing-Edge Flaps for Primary and Vibrations Controls, Publication in the Journal of Aircraft, 2006.
  • Sirohi, J.. Cadou, C. and Chopra, I., “Investigation of the Dynamic Characteristics of Piezohydraulic Actuator,” Journal of Intelligent Material Systems and Structures, Vol. 16, No. 6, June 2005, pp. 481-492.
  • Singh, B. and Chopra, I., “Elastic Blade Whirl Flutter Stability Analysis for Two-Bladed Proprotor/Pylon Systems,” Journal of Aircraft, Vol. 42, No. 2, March-April 2005, pp. 519-527.
  • Tarascio, M. J., Ramasamy, M., Chopra, I., and Leishman J. G., “Flow Visualization of Micro Air Vehicle Scaled Insect-Based Flapping Wings,” Journal of Aircraft, Vol. 42, No. 2, March-April 2005, pp. 385-390.

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Articles in Conference Proceedings

  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 2004.
  • 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 2004.

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Honors and Awards

  • Best Paper Award: “Prediction of UH-60A Dynamic Stall Loads--" Datta, I. and Chopra, AHS Forum 2005 Research
  • AHS Student Design Competition: First Place, Faculty Advisor Education
  • Invited Keynote Speaker: 2005 SPIE Fareast International Conference in Smart Structures, July 2005 Research
  • Keynote Speaker: Indo-US Workshop on Micro Air Vehicle, Bangalore, India, August 2005 Research
  • Distinguished Speaker:Ist US-European Micro-Aerial Vehicle Technology , Garmisch, Germany, Sept 05

Institutional Services

  • Minta-Martin Chair Professor Selection Committee ENGR-A. James Clark School of Engineering
  • Member Engineering Council ENGR-A. James Clark School of Engineering
  • Director Alfred Gessow Rotorcraft Center ENGR-Aerospace Engineering
  • Member Department chair Selection Committee ENGR-Aerospace Engineering
  • Chair Faculty Search committee ENGR-Aerospace Engineering
  • Faculty Advisor Sigma Gama Tau ENGR-Aerospace Engineering
  • Member Research Council UMCP - Graduate School
  • Member Graduate Council UMCP - Graduate School

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