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Controlling Gas-Flow Mass RatiosProposed system automatically controls proportions of gases flowing in supply lines. Conceived for control of oxidizer-to-fuel ratio in new gaseous-propellant rocket engines. Gas-flow control system measures temperatures and pressures at various points. From data, calculates control voltages for electronic pressure regulators for oxygen and hydrogen. System includes commercially available components. Applicable to control of mass ratios in such gaseous industrial processes as chemical-vapor depostion of semiconductor materials and in automotive engines operating on compressed natural gas.
Document ID
19900000624
Document Type
Other - NASA Tech Brief
Authors
Morris, Brian G.
(NASA Lyndon B. Johnson Space Center, Houston, TX.)
Date Acquired
August 14, 2013
Publication Date
December 1, 1990
Publication Information
Publication: NASA Tech Briefs
Volume: 14
Issue: 12
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
MSC-21542
Accession Number
90B10624
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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