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Long term exposure of metals to hydrazine nitrate blendA long term testing program is being conducted to determine the effects of materials in contact with a hydrazine nitrate blend for the purpose of designing chemical propulsion systems which can be used for current as well as future planetary spacecraft. Analysis of this data indicates that some aluminum alloys are acceptable for use with the particular blend of fuel used. Titanium alloy was identified as being acceptable for 10-year applications. Corrosion resistant steels, however, were found to have excessive corrosion rates and are therefore considered unacceptable for long-term use. There is also some evidence that the propellant decomposed at a rate far in excess of the acceptable rate of 0.1 percent per year when in contact with stainless steel.
Document ID
19870016689
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Moran, Clifford M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Blue, Gary D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1986
Publication Information
Publication: Johns Hopkins Univ., The 1986 JANNAF Propulsion Meeting, Volume 1
Subject Category
Metallic Materials
Accession Number
87N26122
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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