NDLI: Ignition characterization of lox/hydrocarbon propellants

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Ignition characterization of lox/hydrocarbon propellants

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lawver, B. R. Rousar, D. C. Wong, K. Y.
Copyright Year	1985
Description	The results of an evaluation of the ignition characteristics of the gaseous oxygen (Gox)/Ethanol propellant combination are presented. Ignition characterization was accomplished through the analysis, design, fabrication and testing of a spark initiated torch igniter and prototype 620 lbF thruster/igniter assembly. The igniter was tested over a chamber pressure range of 74 to 197 psia and mixture ratio range of 0.778 to 3.29. Cold (-92 to -165 F) and ambient (44 to 80 F) propellant temperatures were used. Spark igniter ignition limits and thruster steady state and pulse mode, performance, cooling and stability data are presented. Spark igniter ignition limits are presented in terms of cold flow pressure, ignition chamber diameter and mixture ratio. Thruster performance is presented in terms of vacuum specific impulse versus engine mixture ratio. Gox/Ethanol propellants were shown to be ignitable over a wide range of mixture ratios. Cold propellants were shown to have a minor effect on igniter ignition limits. Thruster pulse mode capability was demonstrated with multiple pulses of 0.08 sec duration and less.
File Size	5334743
Page Count	143
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850020758
Archival Resource Key	ark:/13960/t4vj0dx07
Language	English
Publisher Date	1985-04-30
Access Restriction	Open
Subject Keyword	Propellants And Fuels Spark Ignition Propellant Tests Mixing Cryogenic Fluids Pulse Duration Thrust Chamber Pressure Liquid Oxygen Hydrocarbon Fuels Ethyl Alcohol Oxygen-hydrocarbon Rocket Engines Ignition Limits Cold Flow Tests Space Transportation System Gaseous Rocket Propellants Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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