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Green Propellant Test Capabilities of the Altitude Combustion Stand at the NASA Glenn Research CenterThe NASA Glenn Research Center (GRC) is committed to providing simulated altitude rocket test capabilities to NASA programs, other government agencies, private industry partners, and academic partners. A primary facility to support those needs is the Altitude Combustion Stand (ACS). ACS provides the capability to test combustion components at a simulated altitude up to 100,000 ft. (approx.0.2 psia/10 Torr) through a nitrogen-driven ejector system. The facility is equipped with an axial thrust stand, gaseous and cryogenic liquid propellant feed systems, data acquisition system with up to 1000 Hz recording, and automated facility control system. Propellant capabilities include gaseous and liquid hydrogen, gaseous and liquid oxygen, and liquid methane. A water-cooled diffuser, exhaust spray cooling chamber, and multi-stage ejector systems can enable run times up to 180 seconds to 16 minutes. The system can accommodate engines up to 2000-lbf thrust, liquid propellant supply pressures up to 1800 psia, and test at the component level. Engines can also be fired at sea level if needed. The NASA GRC is in the process of modifying ACS capabilities to enable the testing of green propellant (GP) thrusters and components. Green propellants are actively being explored throughout government and industry as a non-toxic replacement to hydrazine monopropellants for applications such as reaction control systems or small spacecraft main propulsion systems. These propellants offer increased performance and cost savings over hydrazine. The modification of ACS is intended to enable testing of a wide range of green propellant engines for research and qualification-like testing applications. Once complete, ACS will have the capability to test green propellant engines up to 880 N in thrust, thermally condition the green propellants, provide test durations up to 60 minutes depending on thrust class, provide high speed control and data acquisition, as well as provide advanced imaging and diagnostics such as infrared (IR) imaging.
Document ID
Document Type
Conference Paper
Kubiak, Jonathan M.
(HX5 Sierra, LLC Cleveland, OH, United States)
Arnett, Lori A.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
February 8, 2017
Publication Date
December 5, 2016
Subject Category
Spacecraft Propulsion And Power
Propellants And Fuels
Report/Patent Number
Meeting Information
Meeting: JANNAF meeting
Location: Phoenix, AZ
Country: United States
Start Date: December 5, 2016
End Date: December 8, 2016
Sponsors: Johns Hopkins Univ., Department of the Army, NASA Headquarters, Department of the Air Force, Department of the Navy
Funding Number(s)
WBS: WBS 736466.
Distribution Limits
Public Use Permitted.
Green Propellant
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