Real-time quality control of antimisting kerosene (AMK). Final report, February 1983-January 1985
Technical Report
·
OSTI ID:5301631
In Phase I, die-swell and torsional balance experiments were performed to compare the shear and normal stresses developed by AMK (0.3% FM-9 + glycol/amine in Jet A) and 0.1% ARCO in Jet A. Capillary tube experiments show that AMK shear thickens at a critical shear rate, reaches a maximum viscosity, and then shear thins at higher shear rates. Furthermore, it is established that AMK made with an improved FM-9 polymer has a lower critical shear rate, a higher maximum viscosity, and larger viscoelastic and corrections than AMK made with the original FM-9 polymer. Based on die-swell experiments, the outstanding rheological property of both antimisting fuels at high shear rates is the development of normal stresses that are 20 to 40 times larger than shear stresses. In Phase II, experiments were conducted to determine the effect of polymer concentration and methods of blending on the rheological properties of AMK. Modifications to the original die-swell rheometer were made to automatically measure the jet diameter and to eliminate the necessity of making end corrections. Simultaneous degradation/filtration experiments were also conducted in Phase II in which the critical filtration velocities with metal screens and paper filters were measured while AMK was being degraded. This approach has shown that the critical velocity for in-line blended AMK (age--30 minutes) is only slightly lower than for batch-blended AMK at the same specific degrader power.
- Research Organization:
- Southwest Research Inst., San Antonio, TX (USA). Belvoir Fuels and Lubricants Research Facility
- OSTI ID:
- 5301631
- Report Number(s):
- AD-A-168896/9/XAB
- Country of Publication:
- United States
- Language:
- English
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