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	+ GRC Home EPRB chambers range in size from bench top bell jars to 3-meters in diameter and are equipped with various pumping systems (cryopumps, diffusion pumps, oil-free pumping trains, and high-throughput roots-blowers). + Learn More		The bell jar facilities listed below are located in the Electric Propulsion Laboratory (EPL) and the Electric Propulsion Research Building (EPRB). These facilities conduct fundamental research in space power and electric propulsion. Facility Description Research Focus Dimensions VF-52 High Vacuum Bell Jar Electric Propulsion Ion Micro-propulsion HCMT 0.61m-dia x 0.91m high VF-54 High Vacuum Bell Jar Electric Propulsion Pulsed Plasma Thrusters 0.45m-dia x 0.9m high VF-55 Oil Free High Vacuum Glass Bell Jar Electric Propulsion EMI Testing of PPT 0.45m-dia x 0.9m high VF-56 High Vacuum Bell Jar Electric Propulsion PPT 0.45m-dia x 0.9m high VF-57 Moderate Vacuum Bell Jar Electric Propulsion Arcjets 0.45m-dia x 0.9m high VF-58 Moderate Vacuum Bell Jar Electric Propulsion Arcjets 0.45m-dia x 0.9m high VF-59 Ultra-clean, Very High Vacuum Bell Jar Electric Propulsion Propellant-less Propulsion Cathode Testing 0.3m-dia x 0.8m long VF-62 Ultra-clean High Vacuum Bell Jar Electric Propulsion Space Flight Hardare ignition tests for cathodes 0.3m-dia x 0.8m long VF-65 Ultra-clean High Vacuum Bell Jar Electric Propulsion Ion Propulsion erosion studies 0.45m-dia x 0.9m long VF-66 Ultra-clean High Vacuum Bell Jar Electric Propulsion -----     Aeronautics Facilities + View List Aerospace Facilities + View List Space Facilities + View List Facilities Listed by Type + View List Complete Facility Listing + View List
	+ Freedom of Information Act + NASA Web Privacy Policy and Important Notices Editor: Sharon Maier, SGT Inc. NASA Official: Linda C. Elonen-Wright + Web Curator + Contact NASA Glenn + Contact NASA Last Updated: December 12, 2011