A SURVEY OF IMPULSIVE TRAJECTORIES

Mr. Gobetz is currently Chief of Systems Performance Evaluation at the United Aircraft Research Laboratories in East Hartford, Conn. He received both his B.S.E. and M.S.E. degrees in Aeronautical Engineering from Princeton University where he also served as a Research Assistant in the Subsonic Laboratory at the Forrestal Research Center. Prior to joining United Aircraft in 1960, Mr. Gobetz worked in Advanced Design at Rocketdyne. He has held the position of Lecturer in Aeronautical Science at the RPI Graduate Center in East Windsor Hill, Conn., and Lecturer in the Department of Aerospace Engineering at the Graduate Extension of the University of Connecticut. His publications include a number of papers on the subjects of optimum space trajectories, space mission analysis, and aerospace applications of advanced propulsion concepts. Mr. Doll has been a Research Engineer with the United Aircraft Research Laboratories in East Hartford, Conn, since 1966, where he has been primarily involved in the application of optimization techniques in aerospace technology. Since joining UARL he has published several papers in the field of multiple-impulse transfers and trajectory optimization of highand low-thrust vehicles. He received his BS degree in Mechanical Engineering and his MS degree in Aerospace Engineering from the University of Connecticut in 1965 and 1966, respectively. Between 1965 and 1966 he was a NASA fellow at the University. Mr. Doll is a member of both Tau Beta Pi, the National Engineering honor society and Pi Tau Sigma, the Mechanical Engineering honor society. © 1969 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.