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Propulsion Engineer
240-228-6175
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B.S., Mechanical Engineering1995, University of Rochester
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M.S., Aeronautical and Astronautical Engineering1999, University of Illinois at Urbana-Champaign
Propulsion Section Supervisor in the Mechanical Systems Group of the Johns Hopkins University Applied Physics Laboratory Space Exploration Sector. Lead propulsion engineer for multiple interplanetary spacecraft including New Horizons, STEREO, and Dragonfly. Proficient in test, design, review, and procurement of liquid monopropellant/bipropellant, electric propulsion, and micropropulsion systems.
Notable Awards and Leadership
Year(s) | Description |
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2018 | MESSENGER Group Achievement Award, NASA, To the MESSENGER Project Team for exceptional contributions to the first mission to orbit Mercury, executing unprecedented observations adding to humankind's understanding of our solar system's innermost planet. |
2017 | Walter G. Berl Award - Outstanding Paper in the Johns Hopkins APL Tech Digest, Johns Hopkins University Applied Physics Laboratory (JHU/APL), For: Gold, R. E., Bushman, S. S., et al., “Maximizing MESSENGER’s Science Return with Technologies and Innovation,” Johns Hopkins APL Technical Digest, Volume 34, Number 1 (2017), pp. 71-87. |
2016 | Certificate of Achievement, NASA, Space Communications and Navigation - STEREO-B Recovery Team: For demonstration of the proficiency of uplink array commanding with widely spaced antennas to attempt the recovery of the STEREO-B spacecraft. |
2016 | New Horizons Group Achievement Award, NASA, To the New Horizons Team for exceptional contributions in the successful completion of the initial reconnaissance of the Pluto system, providing humanity's first up-close look at Pluto and its moons. |
2013 | Group Achievement Award, National Aeronautics and Space Administration (NASA), Van Allen Probes Project Team |
2011 - Present | Member, AIAA Liquid Propulsion Technical Committee, Awards Subcommittee Chair |
2007 | Group Achievement Award, National Aeronautics and Space Administration (NASA), New Horizons Spacecraft Development Team |
Scholarly Publications
Execution of Parker Solar Probe's unprecedented flight to the Sun and early results
Acta Astronautica, 2021
Design, Fabrication, Test, Launch, and Early Operation of the Parker Solar Probe Propulsion System
AIAA Propulsion and Energy Forum, 2019
Initial results from the New Horizons exploration of 2014 MU69, a small Kuiper Belt object
Science, 2019
The Fall and Rise of STEREO Behind
International Conference on Space Operations, 2018
Performance of the New Horizons Propulsion System through the Pluto Encounter
AIAA/SAE/ASEE Joint Propulsion Conference, 2017
Maximizing MESSENGER's Science Return with Technologies and Innovation
Johns Hopkins APL Technical Digest (Applied Physics Laboratory), 2017
MESSENGER's Hover Campaign
Johns Hopkins APL Technical Digest (Applied Physics Laboratory), 2017
Spacecraft Trajectory Planning and Execution for the MESSENGER Mission
Johns Hopkins APL Technical Digest (Applied Physics Laboratory), 2017
Primary Mission Flight Performance of the Van Allen Probes Propulsion Systems
AIAA/SAE/ASEE Joint Propulsion Conference, 2016
Extending MESSENGER’s Low-Altitude Hover Campaign by Using Helium Pressurant as Cold-Gas Propellant
AIAA/SAE/ASEE Joint Propulsion Conference, 2016
ENGINEERING MESSENGER'S GRAND FINALE AT MERCURY - THE LOW-ALTITUDE HOVER CAMPAIGN
FIRST IAA CONFERENCE ON DYNAMICS AND CONTROL OF SPACE SYSTEMS 2012, PTS I AND II, 2016
MESSENGER MANEUVER PERFORMANCE DURING THE LOW-ALTITUDE HOVER CAMPAIGN
FIRST IAA CONFERENCE ON DYNAMICS AND CONTROL OF SPACE SYSTEMS 2012, PTS I AND II, 2016
NEW HORIZONS GUIDANCE & CONTROL & PROPULSION SYSTEMS BUDGET VERSUS PERFORMANCE FOR THE PLUTO ENCOUNTER
FIRST IAA CONFERENCE ON DYNAMICS AND CONTROL OF SPACE SYSTEMS 2012, PTS I AND II, 2016
THE FIRST THREE MANEUVERS DURING MESSENGER'S LOW-ALTITUDE SCIENCE CAMPAIGN
FIRST IAA CONFERENCE ON DYNAMICS AND CONTROL OF SPACE SYSTEMS 2012, PTS I AND II, 2015
The Pluto system: Initial results from its exploration by New Horizons
Science, 2015
Radiation Belt Storm Probes-Observatory and Environments
Space Science Reviews, 2013
Radiation Belt Storm Probes—Observatory and Environments
The Van Allen Probes Mission, 2012
Design, Fabrication, and Testing of the Radiation Belt Storm Probes Propulsion Systems
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2012
Radiation Belt Storm Probe Spacecraft and Impact of Environment on Spacecraft Design
IEEE Aerospace Conference Proceedings, 2012
Evaluation of Microorganism Growth in Water-Loaded New Horizons and STEREO Propellant Tanks
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011
In-Space Performance of the New Horizons Propulsion System
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2007
AFRL MicroPPT Development for Small Spacecraft Propulsion
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2002
Plasma Diagnostic Development for the AFRL MicroPPT Program
Plasmadynamics and Lasers Conference, 2002
AFRL MicroPPT Development for Small Satellite Propulsion
Plasmadynamics and Lasers Conference, 2002
Heating and plasma properties in a coaxial gasdynamic pulsed plasma thruster
Journal of Propulsion and Power, 2001
Pulsed Plasma Thruster Performance for Microspacecraft Propulsion
Micropropulsion for Small Spacecraft, 2000
Probe measurements in a coaxial gasdynamic PPT
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 1999
Energy balance and efficiency of the pulsed plasma thruster
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 1998
Arc measurements and performance characteristics of a coaxial pulsed plasma thruster
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 1998