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Hydrocarbon-fuel/combustion-chamber-liner Materials Compatibility

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Description:The results of dynamic tests using methane and NASA-Z copper test specimen under conditions that simulate those expected in the cooling channels of a regeneratively cooled LOX/hydrocarbon booster engine operating at chamber pressures up to 3000 psi are presented. Methane with less than 0.5 ppm sulfur contamination has little or no effect on cooling channel performance. At higher sulfur concentrations, severe corrosion of the NASA-Z copper alloy occurs and the cuprous sulfide, Cu2S, thus formed impedes mass flow rate and heat transfer efficiency. Therefore, it is recommended that the methane specification for this end use set the allowable sulfur content at 0.5 ppm (max). Bulk high purity liquid methane that meets this low sulfur requirement is currently available from only one producer. Pricing, availability, and quality assurance are discussed in detail. Additionally, it was found that dilute sodium cyanide solutions, i.e. 5% (w/w), effectively refurbish sulfur corroded cooling channels in only 2-5 minutes by completely dissolving all the Cu2S. Sulfur corroded/ sodium cyanide refurbished channels are highly roughened and the increase surface roughness leads to significant improvements in heat transfer efficiency with an attendant loss in mass flow rate. Both the sulfur corrosion and refurbishment effects are discussed in detail.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Hydrocarbon-fuel/combustion-chamber-liner Materials Compatibility. To get started finding Hydrocarbon-fuel/combustion-chamber-liner Materials Compatibility, you are right to find our website which has a comprehensive collection of manuals listed.
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Pages: 236

Format: PDF, EPUB & Kindle Edition

Publisher: —

Release: 1991

ISBN: LCFCAQAAMAAJ

Description: The results of dynamic tests using methane and NASA-Z copper test specimen under conditions that simulate those expected in the cooling channels of a regeneratively cooled LOX/hydrocarbon booster engine operating at chamber pressures up to 3000 psi are presented. Methane with less than 0.5 ppm sulfur contamination has little or no effect on cooling channel performance. At higher sulfur concentrations, severe corrosion of the NASA-Z copper alloy occurs and the cuprous sulfide, Cu2S, thus formed impedes mass flow rate and heat transfer efficiency. Therefore, it is recommended that the methane specification for this end use set the allowable sulfur content at 0.5 ppm (max). Bulk high purity liquid methane that meets this low sulfur requirement is currently available from only one producer. Pricing, availability, and quality assurance are discussed in detail. Additionally, it was found that dilute sodium cyanide solutions, i.e. 5% (w/w), effectively refurbish sulfur corroded cooling channels in only 2-5 minutes by completely dissolving all the Cu2S. Sulfur corroded/ sodium cyanide refurbished channels are highly roughened and the increase surface roughness leads to significant improvements in heat transfer efficiency with an attendant loss in mass flow rate. Both the sulfur corrosion and refurbishment effects are discussed in detail.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Hydrocarbon-fuel/combustion-chamber-liner Materials Compatibility. To get started finding Hydrocarbon-fuel/combustion-chamber-liner Materials Compatibility, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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Hydrocarbon-fuel/combustion-chamber-liner Materials Compatibility

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