Photo of Roshan Thomas Eapen

Roshan Thomas Eapen

Assistant Professor

Affiliation(s):

  • Aerospace Engineering

233B Hammond Building

reapen@psu.edu

814-863-7457

Research Areas:

Astrodynamics; Vehicle Dynamics and Controls

Interest Areas:

Astrodynamics, Dynamical Systems Theory, Computational Vision, Satellite Rendezvous and Proximity Operations, Terrain Relative Navigation, Space Situational Awareness

 
 

 

Education

  • Bachelor of Technology, Aerospace Engineering, Karunya University, 2014
  • Master of Science, Aeronautics and Astronautics, Purdue University, 2017
  • Doctor of Philosophy, Aerospace Engineering, Texas A&M University, 2021

Publications

Journal Articles

  • Sharad Sharan, Roshan Thomas Eapen, Puneet Singla and Robert Melton, 2023, "Accurate Uncertainty Characterization of Impulsive Thrust Maneuvers in the Restricted Three Body Problem", The Journal of the Astronautical Sciences, 70, (5), pp. 35
  • Roshan Thomas Eapen, Kathleen C Howell and Kyle T Alfriend, 2021, "Momentum Maps and Transport Mechanisms in the Planar Circular Restricted Three-Body Problem.", Journal of Astronautical Sciences, 69, pp. 1263–1291
  • Roshan Thomas Eapen, Manoranjan Majji and Kyle T Alfriend, 2021, "Attitude dynamics of a rigid body in Keplerian motion", Celestial Mechanics and Dynamical Astronomy, 133, (1), pp. 1--25
  • Roshan Thomas Eapen and Carolin Frueh, 2018, "Averaged solar radiation pressure modeling for high area-to-mass ratio objects in geosynchronous orbits", Advances in Space Research, 62, (1), pp. 127--141
  • Roshan Thomas Eapen and Ram Krishan Sharma, 2014, "A study of halo orbits at the Sun--Mars L1 Lagrangian point in the photogravitational restricted three-body problem", Astrophysics and Space Science, 352, (2), pp. 437--441
  • Roshan Thomas Eapen and Ram Krishan Sharma, 2014, "Mars interplanetary trajectory design via Lagrangian points", Astrophysics and Space science, 353, (1), pp. 65--71
  • David Schwab, Roshan Thomas Eapen and Puneet Singla, , "Characterizing Accuracy of Normal Forms to Study Trajectories in Cislunar Space", The Journal of the Astronautical Sciences, 71, (2), pp. 16

Conference Proceedings

  • Graeme Sutterlin and Roshan Thomas Eapen, 2024, "Vision-based Terrain Relative Navigation for Planetary Landing"
  • Roshan Thomas Eapen, Smriti Nanden Paul and Puneet Singla, 2024, "Sensor Tasking Strategies for Space-Based Observers in the Cislunar Environment"
  • Carson Hunsberger, Roshan Thomas Eapen and Puneet Singla, 2024, "Characterization of Axisymmetric Rigid Bodies from Lightcurves via L1 Norm Minimization"
  • Amit Jain, Roshan Thomas Eapen and Puneet Singla, 2023, "Sparse Approximate Hamilton-Jacobi Solutions for Optimal Feedback Control with Terminal Constraints", IEEE
  • Ramchander Bhaskara, Roshan Thomas Eapen and Manoranjan Majji, 2023, "Differentiable rendering for pose estimation in proximity operations"
  • Zach Hall, David Schwab, Roshan Thomas Eapen and Puneet Singla, 2022, "Reachability-Based Approach for Search and Detection of Maneuvering Cislunar Objects", pp. 0853
  • Andrew Verras, Roshan Thomas Eapen, Andrew B Simon, Manoranjan Majji, Ramchander Rao Bhaskara, Carolina I Restrepo and Ronney Lovelace, 2021, "Vision and Inertial Sensor Fusion for Terrain Relative Navigation", pp. 0646
  • R.T. Eapen, M Majji, K. T. Alfriend and Puneet Singla, 2020, "Semi-Analytic solutions to the Hamilton Jacobi Equation with Applications to Orbit Propagation in Perturbed Two-Body Regimes"
  • R.T. Eapen, M Majji and K. T. Alfriend, 2019, "Extended Phase-Space Realization for Attitude Dynamics of an Axisymmetric Body in Eccentric Orbit"
  • R.T. Eapen, M Majji and K. T. Alfriend, 2018, "Equilibria Associated with the Attitude Dynamics of a Rigid Body in Keplerian Motion"
  • Erin Cope, Roshan Thomas Eapen and Puneet Singla, , "Semi-Analytical Rapid Orbit Determination Approach for Perturbed Two Body Problem"
  • Sharad Sharan, Roshan Thomas Eapen, Puneet Singla and Robert Melton, , "Coordinate choice implications for uncertainty propagation in the CR3BP framework"
  • David Schwab, Roshan Thomas Eapen and Puneet Singla, , "Approximating Admissible Control onto the Cislunar Highways for Detection and Tracking of Spacecraft"
  • Madeline Mayer, David Schwab, Roshan Thomas Eapen and Puneet Singla, , "Orbit Characterization and Determination Strategies in the CR3BP Framework"
  • Matthew Brownell, Roshan Thomas Eapen and Puneet Singla, , "Time-Varying Perturbation Model Identification in the Neighborhood of CR3BP Periodic Orbits"

Other

  • Roshan Thomas Eapen, 2017, "Averaged Solar Radiation Pressure Modeling for High Area-to-Mass Ratio Objects in Geostationary Space"

Research Projects

Honors and Awards

  • Heep Graduate Fellowship, Hagler Institude of Advanced Studies, June 2020 - May 2021
  • Aerospace Travel Grant, Aerospace Engineering, Texas A&M University, College Station, August 2018
  • J.N. Tata Scholar, The Jamsetji Nusserwanji Tata Endowment for Higher Education of Indians, September 2015 - May 2017
  • Best Paper Award, 18 th National Space Science Symposium, Indian Space Research Organization., January 2014

Service

Service to Penn State:

Service to External Organizations:

  • Organizing Conferences and Service on Conference Committees, Committee Member, Spaceflight Mechanics Technical Administrative Subcommittee, AAS, Technical Administrative Subcommittee, January 2022 - January 2027
  • Organizing Conferences and Service on Conference Committees, Organizer, Spaceflight Mechanics Technical Administrative Subcommittee, Society of Engineering Science Annual Technical Meeting, October 2022 - October 2022
  • Organizing Conferences and Service on Conference Committees, Reviewer, Associate Editpr, American Control Conference 2022, September 2021
 


 

About

The Penn State Department of Aerospace Engineering, established in 1961 and the only aerospace engineering department in Pennsylvania, is consistently recognized as one of the top aerospace engineering departments in the nation, and is also an international leader in aerospace education, research, and engagement. Our undergraduate program is ranked 15th and our graduate programs are ranked 15th nationally by U.S. News & World Report, while one in 25 holders of a B.S. degree in aerospace engineering in the U.S. earned it from Penn State. Our students are consistently among the most highly recruited by industry, government, and graduate schools nationwide.

The department is built upon the fundamentals of academic integrity, innovation in research, and commitment to the advancement of industry. Through an innovative curriculum and world-class instruction that reflects current industry practice and embraces future trends, Penn State Aerospace Engineering graduates emerge as broadly educated, technically sound aerospace engineers who will become future leaders in a critical industry

Department of Aerospace Engineering

229 Hammond Building

The Pennsylvania State University

University Park, PA 16802

Phone: 814-865-2569