INVESTIGATION AND ANALYSIS OF AIRCRAFT FUEL EMULSIONS
Final rept. 15 Jun 1966-14 Jun 1967
MONSANTO RESEARCH CORP DAYTON OH DAYTON LAB
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The objective of this contract was the development of flammability- controlled JP-4 emulsions for use in gas turbine engines and recovery of JP-4 from the emulsified fuel for forward base usage. The emulsion produced reduced the flame propagation rate to 187th that of JP-4 and reduced the area of dynamic burning to 16th that of JP-4. Other flame and explosivity tests also showed lower flammability. Tests with metals and elastomers used in fuel systems showed negligible or low emulsion effect. Lubricity tests showed the emulsion to have a coefficient of friction considerably lower than JP-4 alone. Negligible static charge buildup and high conductivity significantly lowered this potential hazard for the emulsion. Although the emulsion can be pumped satisfactorily, it does not flow freely to a sump. The emulsion can very readily be broken chemically The raw recovered JP-4 contains the emulsifier which can be removed quantitatively by filtration through a column of attapulgite clay. Emulsion partially broken by thermal extremes or by multipassage through a centrifugal pump can be reconstituted by mild agitation.
- Jet and Gas Turbine Engines