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Triple point determinations of monomethylhydrazine and nitrogen tetroxide, 2.2 percent by weight nitric oxideA series of tests was performed to ascertain the triple points of monomethylhydrazine and nitrogen tetroxide. A laboratory method indicated a triple point for monomethylhydrazine, but tests in a large vacuum chamber indicated that a triple point does not occur in spacelike conditions because the mono-methylhydrazine tends to supercool. Instead, an effective freezing point (with agitation) was obtained. New experimental values for liquid monomethylhydrazine vapor pressure were determined for temperatures from 275.2 to 207.6 K. The values were used to derive vapor pressure equations. Tentative values were obtained for the effective freezing point of nitrogen tetroxide spacelike conditions.
Document ID
19780005291
Acquisition Source
Headquarters
Document Type
Other - NASA Reference Publication (RP)
Authors
Smith, Irwin D.
(NASA Johnson Space Center Houston, TX, United States)
Dhooge, Patrick M.
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1977
Subject Category
Propellants And Fuels
Report/Patent Number
NASA-RP-1013
S-475
Accession Number
78N13234
Funding Number(s)
PROJECT: RTOP 986-15-00-00-72
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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