Ashish Tewari

Professor

Aerospace Engineering

Indian Institute of Technology, Kanpur 208016 India. (E-mail: ashtew@iitk.ac.in)

 

Special interests: Re-entry flight mechanics, orbital guidance, nonlinear attitude control, aeroservoelasticity

 

Ph.D., Aerospace Engineering, University of Missouri-Rolla (1992)

M.S., Aerospace Engineering, University of Missouri-Rolla (1988)

B.Tech., Aeronautical Engineering, IIT-Kanpur (1986)

 

Associate Fellow, American Institute of Aeronautics and Astronautics (AIAA)

Senior member, Institution of Electrical and Electronic Engineers (IEEE)

 

Publications

Teaching

Outstanding Past Students

 

 
Research Projects

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Publications

 

Tewari, A., Basic Flight Mechanics, (ISBN: 9783319300207), Springer, Basel, Switzerland, 2016.

 

Tewari, A., Adaptive Aeroservoelastic Control, (ISBN: 9781118457634), Wiley, Chichester, U.K, 2016.

 

Tewari, A., Aeroservoelasticity - Modeling and Control, (ISBN: 9781493923670), Springer (Birkhauser), Boston, U.S.A., 2015.

 

Tewari, A., Adaptive Vectored Thrust Deorbiting of Space Debris, Journal of Spacecraft and Rockets (AIAA), Vol.50, No.2, March 2013, http://dx.doi.org/10.2514/1.A32421.

 

Tewari, A., Automatic Control of Atmospheric and Space Flight Vehicles, (ISBN: 9780817648633), Springer (Birkhauser), Boston, U.S.A., 2011.

 

Tewari, A., Advanced Control of Aircraft, Spacecraft, and Rockets, Wiley, Chichester, U.K., 2011.

 

Tewari, A., Comment on "A z-Transform Discrete-Time State-Space Formulation for Aeroelastic Stability Analysis", Journal of Aircraft (AIAA), Vol.46, No.5, September-October, 2009, p. 1823.

 

Tewari, A., Entry Trajectory Model with Thermomechanical Break-Up, Journal of Spacecraft and Rockets (AIAA), Vol.46, No.2, March-April, 2009, pp. 299-306.

 

Bandyopadhyay, P., Sharma, R.K., and Tewari, A., Space Debris Hazards from Fragmentations in Collinear Earth-Moon Points, Proc. 5th European Conference on Space Debris, European Space Agency, Darmstadt, Germany, March 30-April 2, 2009.

 

Sudhir, M., and Tewari, A., Adaptive Maneuvering Entry Guidance with Ground-Track Control, Aerospace Science & Technology, Vol. 11, Issue 5, June 2007, pp. 419-431.

 

Tewari, A., and Renuganth, V., Optimal Attitude Control through Magnetic Torquers and Reaction Wheels, 17th IFAC Symposium on Automatic Control in Aerospace, Toulouse, France, June 25-29, 2007.

 

Sudhir, M., and Tewari, A., Autonomous Maneuvering Entry Guidance with Ground-Track Control, 45th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, Jan. 8-11, 2007. Paper AIAA-2007-856.

 

Tewari, A., Atmospheric and Space Flight Dynamics-Modeling and Simulation, Paperback ed. (ISBN-10: 0817643737) 2007, Hardcover ed. (ISBN-10: 0817644377), 2006, Springer (Birkhauser), Boston.

 

Kumar, M., and Tewari, A., Trajectory and Attitude Simulation for Mars Aerocapture and Aerobraking, Journal of Spacecraft & Rockets (AIAA), Vol.43,No.3, May-June 2006, pp. 585-593.

 

Kumar, M., and Tewari, A., Trajectory and Attitude Simulation for Aerocapture and Aerobraking, Journal of Spacecraft & Rockets (AIAA), Vol.42, No. 4, July-Aug. 2005, pp. 684-693.

 

Sharma, R., and Tewari, A., Optimal Nonlinear Tracking of Spacecraft Attitude Maneuvers, IEEE Transactions on Control Systems Technology, Vol.12, No.5, September 2004, pp. 677-682.

 

Tewari, A., Active Vibration Suppression of Spacecraft with Rate Weighted Optimal Control and Multi-Mode Command Shaping, AIAA/AAS Astrodynamics Specialist Conference, Providence, Rhode Island, USA. Paper AIAA-2004-5296, 2004.

 

Kumar, G.V. R., and Tewari, A., Active Closed-Loop Control of Supersonic Flow with Transverse Injection, AIAA 2nd Flow Control Conference Proceedings, Portland, OR, USA.Paper AIAA-2004-2699, 2004.

 

Sharma, R., and Tewari, A., Optimal Nonlinear Tracking of Spacecraft Attitude Dynamics, AIAA/AAS Astrodynamics Specialist Conference, Providence, Rhode Island, USA. Paper AIAA-2004-5209, 2004.

 

Kumar, M., and Tewari, A., Trajectory and Attitude Simulation for Mars Aerocapture and Aerobraking, AIAA Atmospheric Flight Mechanics Conference, San Francisco, CA, USA, 2005.

 

Kumar, M., and Tewari, A., Trajectory and Attitude Simulation for Aerocapture and Aerobraking, AIAA Atmospheric Flight Mechanics Conference, Providence, Rhode Island, USA, 2004..

 

Tewari, A., Modern Control Design with MATLAB and Simulink, (ISBN: 0471496790), Wiley, Chichester, U.K., 2002.

 

Tewari, A., Optimal Nonlinear Spacecraft Attitude Control Through Hamilton-Jacobi Formulation, Journal of Astronautical Sciences (American Astronautical Society), Vol.50, No.1, 2002, pp. 99-112.

 

Tewari, A., Nonlinear Optimal Control of Wing Rock Including Yawing Motion, AIAA Guidance, Navigation, and Controls Conference, Denver, CO, U.S.A. Paper AIAA-2000-4251, 2000.

 

Tewari, A., Optimal Nonlinear Spacecraft Attitude Control Through Hamilton-Jacobi Formulation AAS/AIAA Astrodynamics Specialists Conference, Quebec City, Canada, 2001.

 

Tewari, A., Rate Weighted Optimal Control of Aeroelastic Systems, AIAA Journal of Guidance, Control, and Dynamics, Vol.24, No.2, March-April 2001.

 

Tewari, A., Output Rate Weighted Active Flutter Suppression, AIAA Guidance, Navigation,and Controls Conference, Portland, OR, U.S.A. Paper AIAA-1999-4312, 1999.

 

Tewari, A., Rate Weighted Optimal Control of Flexible Structures, AIAA Adaptive Structures Forum, St. Louis, MO, U.S.A. Paper AIAA-1999-1555, 1999.

 

Tewari, A., Robust Model Reduction for a Flexible Spacecraft, Journal of Guidance, Control, & Dynamics (AIAA), Vol.21, No.5, September-October 1998.

 

Tewari, A., Robust Optimal Controllers for Active Flutter Suppression, AIAA Guidance, Navigation and Controls Conference Proceedings, Boston, MA, U.S.A. Paper AIAA-1998-4142, 1998.

 

Tewari, A., Robust Optimal Control of a Flexible Spacecraft, Advances in Astronautical Sciences, Vol.97, pp.1931-1948, 1997.

 

Tewari, A., Aeroservoelastic Design for Flutter Suppression, 38th AIAA/ASME/ASC/AHS Structures, Structural Dynamics & Materials Conference, Orlando, FL, U.S.A., 1997.

 

Tewari, A., Aeroservoelastic Design and Analysis by Nonlinear Optimization, 6th AIAA/ NASA/USAF Symposium on Multidisciplinary Analysis &  Optimization, Bellevue, WA, U.S.A. Paper AIAA-1996-4013, 1996.

 

Tewari, A., Doublet-Point Method for Supersonic Unsteady Aerodynamics of Nonplanar Lifting Surfaces, Journal of Aircraft (AIAA), Vol.31, No.4, July-August 1994, pp. 745-752.

 

Tewari, A., Nonlinear Optimization for Aeroservoelsatic Analysis, World Congress on Optimal Design of Structural Systems, Rio de Janeiro, Brazil, 1993.

 

Tewari, A., Accuracy of the Rational Function Approximations for Linearized Transonic Unsteady Aerodynamics, Journal of Aircraft (AIAA),Vol.30, No.6, November-December 1993.

 

Tewari, A., Nonplanar Doublet-Point Method for Supersonic Unsteady Aerodynamics, 34th AIAA/ASME/ASC/ ASCE/AHS Structures, Structural Dynamics and Materials Conference, La Jolla, CA, U.S.A., 1993.

 

Tewari, A., Multiple-Pole Rational Function Approximations for Unsteady Aerodynamics, Journal of Aircraft (AIAA), Vol.30, No.3, May-June 1993.

 

Eversman, W., and Tewari, A., Consistent Rational Function Approximation for Unsteady Aerodynamics, Journal of Aircraft (AIAA), Vol.28, No.9, September 1991, pp. 545-552.

 

Eversman, W., and Tewari, A., Modified Exponential Series Approximation for the Theodorsen Function, Journal of Aircraft (AIAA), Vol.28, No.9, September 1991, pp. 553-557.

 

Balakrishnan, S.N., and Tewari, A., Computation of Structured Singular Values in Robust Control, 29th Aerospace Sciences Meeting, Reno NV, U.S.A. Paper AIAA-1991-589, 1991.

 

Eversman, W., and Tewari, A., Reduced Cost Rational Function Approximations for Unsteady Aerodynamics, 31st AIAA/ASME/ ASC/ASCE/AHS Structures, Structural Dynamics & Materials Conference, U.S.A. Paper AIAA-1990-1155, 1990.

 

Eversman, W., and Tewari, A., Rational Function Approximations for Unsteady Aerodynamics, MSC/NASTRAN Aeroelasticity Users Conf., Paper No. 11, 1989.


 

 

Courses Taught

 

AE-201 Aerospace Dynamical Systems

AE-202 Introduction to Aerospace Engineering

AE-321 Flight Mechanics-I

AE-322 Flight Mechanics-II

AE-421 Flight Vehicle Control

AE-422 Experiments in Flight Mechanics

AE-461 Aircraft Design-I

AE-486 Aircraft Control Systems

AE-631 Introduction to Flight Mechanics

AE-641 Space Dynamics-I

AE-642 Space Dynamics-II

AE-644 Introduction to Hypersonic and Trans-atmospheric Flight*

AE-646 Control Theory

AE-647 Flight Dynamics*

AE-648 Flight Stability & Control*

AE-649 Automatic Control of Aircraft, Rockets, & Spacecraft*

AE-777 Optimal Space Flight Control*

ESO-104 Mechanics of Solids#

ESO-204 Fluid Mechanics#

ESO-206 Dynamics#

 

*Courses introduced by self

#Courses taught as tutor

 


 

Outstanding Past Students

Description: asanyal

 
 


Dr. Amit K. Sanyal

Associate Professor

Mechanical and Aerospace Engineering

Link Hall 216

Syracuse University

Syracuse, NY 13244 (USA)

http://eng-cs.syr.edu/about-the-college/faculty-and-staff/sanyal



Description: Sharma

 
 

Dr. Rajnish Sharma
Assistant Professor
Aerospace Engineering and Mechanics Department
211, Hardaway Hall, 7th Avenue 
University of Alabama Tuscaloosa, AL 35487-0280 (USA)

(Dr. Sharma received his M.Tech. from IIT-Kanpur with an IEEE journal paper in 2004.)

Description: Mrinal

 
 


Dr. Mrinal Kumar

Assistant Professor

Department of Mechanical & Aerospace Engineering

University of Florida, Gainesville FL 32611-6250 (USA)

(Dr. Kumar received his B.Tech. from IIT-Kanpur with Best Undergraduate Project Award

and 2 AIAA journal papers in 2005.)

 

Dr. Muthyala Sudhir

Principal Scientist

Zeus Numerix, Bangalore, India

(Dr. Sudhir received his Ph.D. from IIT-Kanpur in 2009.) 

Dr. Ashish Singla

Assistant Professor

Mechanical Engineering Department

Thapar University, Patiala - 147004 (Punjab), India

(Dr. Singla received his Ph.D. from IIT-Kanpur in 2012.)

Sponsored Research Projects Undertaken as Principal Investigator

 

  1. Design of an Active Flutter Suppression System (Aeronautics R&D Board)

 

  1. Development of a Full-Potential Method for Unsteady Transonic Aerodynamics of Three Dimensional Configurations (Aeronautical Development Agency)

 

  1. Active Vibration Suppression of Flexible Spacecraft Using Multi-Mode Input Shaping and Rate Weighted Optimal Control (Indian Space Research Organisation)

 

  1. Optimal Nonlinear Attitude Control of Spacecraft Undergoing Large, Rapid Maneuvers (Indian Space Research Organisation)

 

  1. Re-Entry Trajectory Modelling, Simulation, and Guidance (Indian Space Research Organisation)

 

  1. Optimal Nonlinear Attitude Control of CARTOSAT-II (Indian Space Research Organisation)

 

  1. Optimal Guidance of a Lifting Re-Entry Vehicle (Indian Space Research Organisation)

 

  1. Modelling and Simulation of Debris Entry Trajectory with Aerothermal Break-Up (Indian Space Research Organisation)