Prior to TRW, Dr. Gleghorn worked at Hughes Aircraft and at the Jet Propulsion Laboratory, and he served as a naval officer in the Korean War. He is a member of the NAE, a fellow of AIAA, and a member of the Institute of Electrical and Electronics Engineers (IEEE). He has also been a member of independent design and readiness review groups on the Hubble Space Telescope refurbishment mission, the Cassini/Huygens orbiter, the probe of Titan, and the Chandra X-Ray telescope spacecraft. Dr. Gleghorn holds a B.S. in electrical engineering from the University of Colorado and M.S. and Ph.D. degrees in electrical engineering and mathematics from the California Institute of Technology. He was a member of the NASA Aerospace Safety Advisory Panel for 10 years and the NRC National Weather Service Modernization Committee, the Committee on Membership, the Aerospace Engineering Peer Committee, the Committee on International Space Station Meteoroid/Debris Risk Management, and the Committee on Space Debris.

KYLE T. ALFRIEND is the TEES Distinguished Research Chair and Professor in the Department of Aerospace Engineering at Texas A&M University. His areas of research include astrodynamics, satellite altitude dynamics and control, space debris, space surveillance, and space systems engineering. Dr. Alfriend has received the American Association for the Advancement of Science (AAAS) International Scientific Cooperation Award, the AIAA Mechanics and Control of Flight Award, and the American Astronautical Society Dirk Brouwer Award. He is a member of the NAE and a fellow of AIAA. Dr. Alfriend earned his M.S. in applied mechanics from Stanford University and his Ph.D. in engineering mechanics from Virginia Tech. He has served as a member of the NRC’s Aeronautics and Space Engineering Board and of the Committee on the Future of the U.S. Aerospace Infrastructure and Aerospace Engineering Disciplines to Meet the Needs of the Air Force and the Department of Defense.

MICHAEL J. BLOOMFIELD is vice president and general manager of space systems at Oceaneering Space Systems. Prior to joining Oceaneering, he was vice president for Houston operations at Alliant Techsystems, Inc. (ATK). Mr. Bloomfield is a veteran astronaut of three space shuttle flights. Selected as a NASA astronaut in 1994, he served as a pilot on STS-86 and STS-97 and as commander of STS-110. While at NASA he also held important management positions with the astronaut office, including chief instructor astronaut, chief of astronaut safety, and deputy director of flight crew operations. Additionally, Mr. Bloomfield was director of shuttle operations and chief of the shuttle branch. He also served as deputy director of the Flight Crew Operations Directorate before leaving NASA in 2007 to join ATK. Mr. Bloomfield received his B.S. in mechanical engineering from the U.S. Air Force Academy and his M.S. in engineering management from Old Dominion University.

PETER BROWN is a professor at the University of Western Ontario (UWO) and a member of the Western Meteor Physics Group. He studies small bodies of the solar system, with a particular emphasis on meteors, meteorites, meteoroids, and asteroids. His research interests include answering basic questions about the origin and evolution of small bodies in the solar system, such as the origin of meteoroids (comets/asteroids/interstellar and the proportions of each), the origin of meteorites, the physical structure of meteoroids (bulk density/dustballs and what this says about their origin), and the flux and interaction of larger meteoroids at Earth (meteorites, breakup in the atmosphere). Dr. Brown has received the UWO Governor General’s Gold Medal and the Plaskett Medal of the Canadian Astronomical Society and the Royal Astronomical Society of Canada, is the Canada Research Chair in Meteor Science, and won an Ontario Distinguished Researcher Award. He earned his B.Sc. in honors physics from the University of Alberta and his M.Sc. and Ph.D. in physics from the UWO.

RAMON L. CHASE is an associate at Booz Allen Hamilton. He has worked on three new concept efforts: the Fly back Booster System, the Point-to-Point Delivery System, and the Transatmospheric Vehicle. He is also the DARPA representative to the Joint NASA DARPA Horizontal Launch Initiative study advisory group. Previously, he was a principal and division manager at ANSER, where he participated in the development of a National Hypersonic Roadmap and an Air Force Integrated Space Architecture. He has served as a study leader at General Research Corporation and as a propulsion lead to the Jupiter Orbiter Planetary Spacecraft Preliminary Design Team at California Institute of Technology’s Jet Propulsion Laboratory. Mr. Chase has written more than 30 technical papers on advanced space transportation systems, military space planes, single stage-to-orbit launch vehicles, orbital



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