Dissertations

Ph.D. Theses Completed 

1. P. Tsiotras, Ph.D., “Analytic Theory of Asymmetric Rigid Bodies Subject to Arbitrary Body-Fixed Torques and Forces,” Ph.D. Thesis, May 1993.

In 1994, Dr. Tsiotras accepted the (tenure track) position of Assistant Professor of Mechanical and Aerospace Engineering at the University of Virginia. In 2005, Dr.Tsiotras was promoted to Professor of Aerospace Engineering at Georgia Tech.

2.  J. Puig-Suari, Ph.D., “Aerobraking Tethers for the Exploration of the Solar System,” Ph.D. Thesis, August 1993.

In 1994, Dr. Puig-Suari accepted the (tenure track) position of Assistant Professor of Mechanical and Aerospace Engineering at Arizona State University. Since 2005, Dr. Puig-Suari has been Professor and Head of Aerospace Engineering at Cal. Poly.

3.  J.A. Sims, Ph.D., “Delta-V Gravity-Assist Trajectory Design: Theory and Practice,” Ph.D. Thesis, December 1996.

In January 1997, Dr. Sims accepted the position of Member of Technical Staff in the Navigation and Flight Mechanics Section of the Jet Propulsion Laboratory, California Institute of Technology.

4.  S.G. Tragesser, Ph.D., “Analysis and Design of Aerobraking Tethers,” Ph.D. Thesis, December 1997.

In 1997, Dr. Tragesser accepted a position with Charles Stark Draper Laboratory in Cambridge, MA. In 1999 Dr. Tragesser accepted the (tenure track) position of Assistant Professor in the Department of Aeronautical and Astronautical Engineering at the Air Force Institute of Technology (AFIT). In 2004, Dr. Tragesser accepted the position of Assistant Professor of Mechanical and Aerospace Engineering at University of Colorado at Colorado Springs.

5.  R.A. Gick, Ph.D. (formerly R. Beck), “Analysis of the Motion of Spinning, Thrusting Spacecraft” Ph.D. Thesis, December 1999.

In January 2000, Dr. Gick accepted a position with the Aerospace Corporation in El Segundo, CA.

6.  A.E. Petropoulos, Ph.D., “A Shape-Based Approach to Automated, Low-Thrust, Gravity-Assist Trajectory Design,” Ph.D. Thesis, May 2001.

In June 2001 Dr. Petropoulos accepted the position of Member of Technical Staff in the Navigation and Mission Design Section of the Jet Propulsion Laboratory, California Institute of Technology.

7.  W.R. Johnson, Ph.D., “Analysis and Design of Aeroassisted Interplanetary Missions,” Ph.D. Thesis, December 2002.

Dr. Johnson accepted the position of Member of Technical Staff in the Navigation and Mission Design Section of the Jet Propulsion Laboratory, California Institute of Technology, in 2003.

8.  McConaghy, T. Troy, Ph.D., “Design and Optimization of Interplanetary Spacecraft Trajectories,” Ph.D. Thesis, December 2004.

9.  Jokic, Michael, Ph.D., “Modeling and Analysis of Tethered Systems Performing Orbital Maneuvers,” Ph.D. Thesis, May 2005 (School of Engineering, The University of Queensland, Brisbane, Queensland, Australia.)

Professor Longuski served as co-advisor (with Dr. Bill Daniel at The University of Queensland). Michael Jokic spent approximately two years as a visiting researcher at Purdue working under the direction of Professor Longuski.

10. Landau, Damon, “Strategies for the Sustained Human Exploration of Mars,” Ph.D. Thesis, December 2006.

Dr. Landau joined the Jet Propulsion Laboratory after this doctoral degree.

11. Okutsu, Masataka, “Design of Human Missions to Mars and Robotic Missions to Jupiter,” Ph.D. Thesis, December 2006.

Dr. Okutsu joined as a post-doctoral researcher in the School of Aeronautics and Astronautics, Purdue University.

12.  Ayoubi, Mohammad, “Analytical Theory for the Motion of Spinning Rigid Bodies,” Ph.D. Thesis, May 2007.

Dr. Ayoubi is an Assistant Professor in the Department of Mechanical Engineering at Santa Clara University.

13.  Yam, Chit Hong, “Design of Missions to the Outer Planets and Optimization of Low-thrust, Gravity-Assist Trajectories via Reduced Parameterization,” Ph.D. Thesis, May 2008.

14.  Gates, Kristin L., “Theory and Applications of Ballute Aerocapture and Dual-Use Ballute Systems for Exploration of the Solar System,” Ph.D. Thesis, August 2009.

Dr. Gates works for the Global Aerospace Corporation based in California.

15.  Chen, Kuan-Hua Joseph, “Design of Low-Thrust Gravity-Assist Trajectories for Cycler Missions to Mars and for Non-Newtonian Physics Experiments,” Ph.D. Thesis, May 2010.

16.  Pollock, George E. IV, “Propellantless Spacecraft Maneuvers Using The Electromagnetic Lorentz Force,” Ph.D. Thesis, May 2010.

Dr. Pollock joined The Aerospace Corporation after his doctoral degree.

17.  Gangestad, Joseph, “Analytical Theory for Orbits of Electrostatically Charged Spacecraft and Direct Calculation of Planet-to-Planet Transfers,” Ph.D. Thesis, December 2010.

Dr. Gangestad joined The Aerospace Corporation after his doctoral degree.

18.  Kloster, Kevin, “Interplanetary Mission Design Techniques for Flagship-Class Missions,” Ph.D. Thesis, December 2010.

Dr. Kloster joined The Aerospace Corporation after his doctoral degree.


M.S. Theses Completed 

1.  S.N. Williams, M.S., “Automated Design of Multiple Encounter Gravity-Assist Trajectories,” M.S. Thesis, August, 1990.

Mr. Williams accepted the position of Member of Technical Staff in the Mission Design Section of the Jet Propulsion Laboratory, California Institute of Technology, in 1990.

2. M.R. Patel, M.S., “Automated Design of Delta-V Gravity-Assist Trajectories for Solar System Exploration,” M.S. Thesis, August 1993.