Dr. Keith Goodfellow is the Chief Engineer for the Arcjet and Ion Engine product lines at Aerojet Rocketdyne. Prior to joining AR he was the lead EP test engineer at the Jet Propulsion Laboratory for 15 years were he also supported flight programs such as Deep Space 1; and he performed research and development work at the Lockheed Martin Skink Works to 10 years. He received his Ph.D in Aerospace engineering from University of Southern California  where he has also been an Adjunct Professor in the Astronautical Engineering department for 25 years.