Robert G. Melton Professor of Aerospace Engineering     and Director of Undergraduate Studies Ph.D. (engineering physics), University of Virginia, 1982.   Room Address:  229B Hammond Bldg. Dept. of Aerospace Engineering  Penn State University  University Park, PA  16802-1401 email: rgmelton@psu.edu Phone:  814-865-1185 Fax: 814-865-7092

Professor Melton performs research in low-thrust spacecraft trajectories, including the use of perturbation methods and the related development of alternative characterizations of unperturbed Keplerian trajectories. Increasingly, spacecraft will employ higher-efficiency, low-thrust engines for maneuvering, station-keeping. Earth-escape and planetary capture; efficient orbital motion under the influence of low-thrust and other non-gravitational influences. Professor Melton also studies satellite attitude dynamics and control of multi-body and flexible-body spacecraft. His students engage in analytical and computational studies of these problems.

Professor Melton received the Lawrence J. Perez Memorial Student Advocate Award (2001), the PSES Premier Teaching Award (1992), PSES Outstanding Advising Award (1986), SAE Ralph R. Teetor Educational Award (1986), and the PSES Outstanding Teaching Award (1985), and was president of the Penn State chapter of Sigma Xi, the Scientific Research Society (1989-92). He is an Associate Fellow of AIAA and a Fellow of the American Astronautical Society (AAS), where he has chaired the Space Flight Mechanics technical committee and served as Vice President-Technical and Vice President-Publications. Presently, he is a member of the Board of Directors of the AAS and a member of the International Astronautics Federation Astrodynamics Technical Committee.

Research Interests:
Orbital Mechanics, trajectory optimization, spacecraft attitude dynamics and control.

Selected Publications:

Chianese, S., Spencer, D.B., and Melton, R.G., Selecting Projects for a Capstone Spacecraft Design Course from Real World Solicitations, submitted to the Journal of Aviation/Aerospace Education and Research.

Chadwick, W.J, Spencer, D.B., and Melton, R.G., Geometric Visibility of Ground Sites for Beacon/Relays on the Martian Moons, to appear in J. of Guidance, Control, and Dynamics.

Cichan, T., Melton, R.G., and Spencer, D.B., Control Laws for Minimum Orbital Change -- The Satellite Retrieval Problem, Journal of Guidance, Control, and Dynamics, Vol. 24, No. 6, Nov.-Dec. 2001, pp. 1231-1233.

Melton, R.G., Time-Explicit Representation of Relative Motion Between Elliptical Orbits, Journal of Guidance, Control, and Dynamics, Vol. 23, No. 4, July-August 2000, pp. 604-610.

Rubenstein, D.S. and Melton, R.G., Multiple Rigid Body Reorientation Using Relative Motion With Constrained Final System Configuration, Journal of Guidance, Control, and Dynamics, May-June 1999, Vol. 22, No. 3, pp. 441-446.

Starchville, T.F. and Melton, R.G., Optimal Low-Thrust Transfers to Halo Orbits About the L₂ Libration Point in the Earth-Moon System (Elliptical Problem), Advances in the Astronautical Sciences, 1998, Vol. 99, pp. 1489-1506.

Mrad, N., Melton, R.G., and Kulakowski, B.T., Performance of Optical Sensors in the Control of Flexible Structures,  Journal of Intelligent Material Systems and Structures, Nov. 1997, Vol. 8, No. 11,  pp. 920-928.

Staugler, A.J., Chart, D.A., and Melton, R.G., A Reversed-Series Solution to the Universal Kepler Equation,
Journal of Guidance, Control, and Dynamics, Nov.-Dec. 1997, Vol. 20, No. 6, pp. 1276-1277.

Ross, I.M., and Melton, R.G., Singular Arcs for Blunt Endoatmospheric Vehicles, Journal of the Astronautical Sciences, 1993, Vol. 41, No.1,  pp. 35-51.

Stewart, D.J., and Melton, R.G., Approximate Analytic Representations for Low-Thrust Trajectories, Advances in the Astronautical Sciences, 1992, Vol. 76, pp. 1455-1467.

Melton, R.G., Lajoie, K.M., and Woodburn, J.W., Optimum Burn Scheduling for Low-Thrust Orbital Transfers, Journal of Guidance, Control and Dynamics, Jan.-Feb. 1989, Vol. 12, No. 1, pp. 13-18.

Ross, I.M., and Melton, R.G., A Symmetric Kinematic Transformation Pair Using Euler Parameters, Journal of Guidance, Control, and Dynamics, 1987, Vol. 10, No. 5, pp. 506-507.