Aerospace Faculty Profile :
Dr. Ray Sedwick
Assistant Professor
Room 3146 Martin Halll
Research interests include space power and propulsion, and specifically
the application of nuclear fission and fusion to space transportation.
sedwick@umd.edu | (301) 405-0111 |
Education
B.S., Penn State University (Aerospace Engineering)
S.M., Massachusetts Institute of Technology (Aeronautics and Astronautics)
Ph.D., Massachusetts Institute of Technology (Aeronautics and Astronautics)
Journal Publications
Sedwick, R.J., Kerrebrock, J.L. and D.A. Zayas, “Magnetohydrodynamic Vortex Containment for Gas Core Nuclear Propulsion, Part I: Concept Overview”, AIAA Journal of Propulsion and Power, Vol 23, No. 1, Jan-Feb 2007.
Sedwick, R.J. and D.A. Zayas, “Magnetohydrodynamic Vortex Containment, Part II: Equilibrium of Uranium Fluoride Fuel in Hydrogen Propellant”, AIAA Journal of Propulsion and Power, Vol 23, No. 1, Jan-Feb 2007.
Sedwick, R.J. and D.A. Zayas, “Magnetohydrodynamic Vortex Containment, Part III: 1-D Axisymmetric Flow Model”, AIAA Journal of Propulsion and Power, Vol 23, No. 2, Mar-Apr 2007.
Sedwick, R.J. and D.A. Zayas, “Magnetohydrodynamic Vortex Containment, Part IV: System Performance Assessment”, AIAA Journal of Propulsion and Power, Vol 23, No. 2, Mar-Apr 2007.
Elias, L.M., D.W. Kwon, R.J. Sedwick and D.W. Miller, "Electromagnetic Formation Flight Dynamics including Reaction Wheel Gyroscopic Stiffening Effects" Journal of Guidance, Control, and Dynamics, Vol. 30, No. 2, Mar-Apr. 2007, pp. 499-511.
Schweighart, S.A. and R.J. Sedwick, “Cross-Track Motion of Satellite Formations in the Presence of J2 Disturbances”, AIAA Journal of Guidance Control and Dynamics, Vol 28, No. 4, Jul-Aug 2005.
McGuire, T.J. and R. J. Sedwick, “Improved Confinement in Inertial Electrostatic Confinement for Fusion Space Power Reactors”, AIAA Journal of Propulsion and Power, Vol 21, No. 4, Jul-Aug 2005.
Kong, E.M.C, D.W. Kwon, S.A. Schweighart, L.M. Elias, R.J. Sedwick and D.W. Miller, “Electromagnetic Formation Flight for Multi-Satellite Arrays”, AIAA Journal of Spacecraft and Rockets, Vol 41, No. 4, Jul-Aug 2004.
Schweighart, S.A. and R.J. Sedwick, “High-Fidelity Linearized J2 Model for Satellite Formation Flying”, Journal of Guidance Control and Dynamics, Vol 25 No. 6, Nov-Dec, 2002.
Enright, J.P., R.J. Sedwick and D.W. Miller, “High-Fidelity Simulation for Spacecraft Autonomy Development”, Canadian Aeronautics and Space Journal, Vol. 48, No. 1, March 2002.
Jilla C.D, D.W. Miller and R.J.Sedwick, "Application of Multidisciplinary Design Optimization Techniques to Distributed Satellite Systems", Journal of Spacecraft and Rockets, Vol. 37, No. 4, 2000.
Articles in conference proceedings
Sedwick, R.J. and S.A. Schweighart, “Electromagnetic Formation Flight”, AAS 03-005, 26th Rocky Mt. Guidance and Control Conference, Breckenridge, CO., Feb 5-9, 2003.
Dietrich, C.C. and R.J. Sedwick, “A Magnetic Nozzle and Diverter Electrode to Improve Penning Fusion Efficiency”, Workshop on Non-Neutral Plasmas, Santa Fe, NM, July 7-11, 2003.
McGuire, T.J., and R.J. Sedwick, “Confinement Limitations in Gridded Inertial Electrostatic Confinement Fusion Devices”, AIAA 2003-4829, AIAA/ASME/SAE/ASEE JPC, 39th Annual meeting, Huntsville, AL, 2003.
Dietrich, C.C. and R.J. Sedwick, “Efficiency Improvements for IEC Fusion in a Penning Trap by Electron Re-Circulation”, ”, AIAA 2003-4827, AIAA/ASME/SAE/ASEE JPC, 39th Annual meeting, Huntsville, AL, 2003.
Miller, D.W., R.J. Sedwick, E.M.C. Kong and Schweighart, S.A., “Electromagnetic Formation Flight for Sparse Aperture Telescopes”, IEEE 02-428, IEEE 2002 Aerospace Conference, Big Sky, MT, March 2002.
Sedwick, R.J. and S.A. Schweighart, “Propellantless Spin-Up and Reorientation of Tethered or Electromagnetically Coupled Spacecraft”, SPIE 4849-26, SPIE Highly Innovative Space Telescope Concepts Conference, Waikoloa, HI, Aug 22-28, 2002.
Sedwick, R.J. and D.W. Miller, “System Level Design Trades for the Submillimeter Probe of the Evolution of Cosmic Structure (SPECS)”, SPIE 4849-27, SPIE Highly Innovative Space Telescope Concepts Conference, Waikoloa, HI, Aug 22-28, 2002.
Enright, J.P., R.J. Sedwick and D.W. Miller, “An Evolutionary Approach to Engineering Spacecraft Flight Software”, IASTED Applied Informatics 2001: Software Symposium, Feb. 19-22, 2001, Innsbruck, Austria.
Marais, K. and R.J. Sedwick, "Space Based GMTI Using Scanned Pattern Interferometric Radar," IEEE 2001 Aerospace Conf., Big Sky, MT, March 2001.
Schweighart, S.A. and R.J. Sedwick, "A Perturbative Analysis of Geopotential Disturbances for Satellite Cluster Formation Flying," IEEE 2001 Aerospace Conference, Big Sky, MT, March 2001.
Enright, J., R.J. Sedwick and D.W. Miller, “An Enabling Development Environment for Spacecraft Autonomy”, AAAI Spring Symposium: Robust Autonomy, March 26-28, 2001, Stanford, CA.
Reichbach, J.G., R.J. Sedwick and M. Martinez-Sanchez, "Micropropulsion System Selection for Precision Formation Flying Satellites," AIAA 01-3646, AIAA/ASME/ SAE/ASEE JPC, 37th Annual meeting, Salt Lake City, Utah, Jul 2001.
McGuire, T.J., and R.J. Sedwick, "Aero-Assisted Orbital Transfer Vehicles Utilizing Atmosphere Ingestion", AIAA 01-0840, AIAA Aerospace Sciences Conference, 39th Annual meeting, Reno, NV, January 2001.
Miller, D.W., R.J. Sedwick, K. Hartman, “Evolutionary Growth of Mission Capability Using Distributed Satellite Sparse Apertures: Application to NASA’s Soil Moisture Mission (EX-4), 2001.
Marais, K. and R.J. Sedwick, “Cluster Design for Scanned Pattern Interferometric Radar”, AIAA 01-4654, AIAA Space 2001 Conference and Exhibit, Albuquerque, NM, August 28-30, 2001.
Schweighart, S.A. and R.J. Sedwick, “Development and Analysis of a High Fidelity Linearized J2 Model for Satellite Formation Flying”, AIAA 01-4744, AIAA Space 2001 - Conference and Exposition, Albuquerque, NM, Aug. 28-30, 2001.
Sedwick, R.J., T.L. Hacker, K. Marais, "Performance Analysis for an Interferometric Space-Based GMTI Radar System", IEEE 2000 International Radar Conference, Alexandria, VA; May 7-12, 2000.
Enright, J.P., R.J. Sedwick and D.W. Miller, “High-Fidelity Simulation for Spacecraft Autonomy Development”, Astro-2000 11th CASJ Conference on Astronautics, Nov. 6-9, 2000, Ottawa, Ontario.
Kong, E.M.C., D.W. Miller, and R.J. Sedwick, "Exploiting Orbital Dynamics for Aperture Synthesis Using Distributed Satellite Systems: Applications to a Visible Earth Imager System", AAS/AIAA Space Flight Mechanics Mtg, AAS 99-122, Feb 1999.
Kong, E.M.C., D.W. Miller, and R.J. Sedwick, "Exploiting Orbital Dynamics for Stellar Separated Spacecraft Interferometry," ACC99-I014-04, American Control Conference, June 1999.
Sedwick, R.J., T.L. Hacker and D.W. Miller, "Optimum Aperture Placement for a Space-Based Radar System Using Separated Spacecraft Interferometry", AIAA 99-4271, AIAA Guidance, Navigation, and Control Conference, Portland, OR; August 9-11, 1999.
Hacker, T.L. and R.J. Sedwick, "Space-Based GMTI Radar Using Separated Spacecraft Interferometry", AIAA 99-4634, AIAA Space Technology Conference, Albuquerque, NM; Sept 28-30, 1999.
Kong, E.M.C., D.W. Miller, and R.J. Sedwick, "Trajectory Design for a Visible Geosynchronous Earth Imager", AIAA-99-4633, AIAA Space Technology Conference, Albuquerque, NM, Sept 28-30, 1999.
Jilla, C.D., R.J. Sedwick, and D.W. Miller, "Application of Multidisciplinary Design Optimization Techniques to Distributed Satellite Systems", AIAA-99-4632, AIAA Space Technology Conference, Albuquerque, NM, September 28-30, 1999.
Enright, J.P., R.J. Sedwick, and D.W. Miller, "Information Architecture Analysis and Optimization for Space-Based Distributed Radar", AIAA 99-4551, AIAA Space Technology Conference, Albuquerque, NM, September 28-30, 1999.
Sedwick, R.J., D.W. Miller and E.M.C. Kong, "Mitigation of Differential Perturbations in Clusters of Formation Flying Satellites", AAS 99-124, AAS Space Flight Mechanics Conference, Breckenridge, CO, February 1998.
Sedwick, R.J. and J.L. Kerrebrock, "Developments in Gas Core Nuclear Propulsion Using MHD Driven Vortex Containment,” AIAA 98-3888, AIAA/ASME/SAE/ASEE JPC, 34th Annual meeting, Cleveland, OH, 1998.
Sedwick, R.J. and J.L. Kerrebrock "Radiator Free Space Power Conversion," AIAA 98-3889, AIAA/ ASME/SAE/ASEE JPC, 34th Annual meeting, Cleveland, OH, 1998.
Sedwick, R.J., E.M.C Kong and D.W. Miller, "Exploiting Orbital Dynamics and Micropropulsion for Aperture Synthesis Using Distributed Satellite Systems: Applications to TechSat 21," AIAA-98-5289, AIAA Defense and Civil Space Program Conference, Huntsville, AL, Oct 28-30, 1998.
Sedwick, R.J. and J.L. Kerrebrock, "Radiative Heat Transfer and Ionization In MHD Driven Vortices for a GCNR, " AIAA 97-0792, AIAA Aerospace Sciences Conference, 35th Annual meeting, Reno, NV, 1997.
Sedwick, R.J. and J.L. Kerrebrock, "MHD Enhanced Vortex Containment Concept for a Gas Core Nuclear Rocket, " AIAA 96-0718, AIAA Aerospace Sciences Conference, 34th Annual meeting, Reno, NV, 1996.
Honors and Awards
Raymond Bisplinghoff Teaching Fellowship (MIT)
NASA MSFC Summer Faculty Fellowship
NASA Institute for Advanced Concepts Fellow
Bepi Columbo Prize (University of Padua, Italy)
Scientific and Professional Membership
American Institute of Aeronautics and Astronautics (AIAA)
Institute of Electrical and Electronics Engineers (IEEE)
American Astronautical Society (AAS)
American Physical Society (APS)
American Society for Engineering Education (ASEE)
Instititute and Professional Service
Reviewer for the AIAA Journal of Guidance Control and Dynamics
Reviewer for the AIAA Journal of Spacecraft and Rockets
Reviewer for the AIAA Journal of Propulsion and Power
Reviewer for the Journal of Astronautical Sciences
Consulting
Payload Systems
NASA Goddard Space Flight Center
Lockheed Martin Corporation
Axis Engineering Technologies
AeroAstro
Draper Laboratories
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