Evaluation of the water/fuel emulsion concept for test cell smoke abatement

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Evaluation of the water/fuel emulsion concept for test cell smoke abatement

Klarman, A.F. / Rollo, A.J. / Scott, H.C.

Results of a test program to evaluate the feasibility of utilizing a water/fuel emulsion in gas turbine engines are presented. The objective of the program was to assess this technique as a means of controlling test cell exhaust smoke emissions at Naval Air Rework Facilities. The program was conducted on a J79-GE-10 engine and fuel control and included an evaluation of the effect of emulsions on: (a) fuel control performance and components, (b) engine performance and components, and (c) engine and test cell exhaust emissions. A water/fuel emulsion can reduce the J79-GE-10 gas turbine engine exhaust smoke to a level that will enable test cell smoke emissions to meet a 20 percent visible opacity (Ringleman 1) standard; however, the fuel control's inability to handle the large quantities of water required (approximately 30 percent of the engine fuel flow for the J79 GE-10 engine) appears to make the use of emulsions impractical for this engine.