Hybrid Electrostatic Nozzle for Crash Fire Reduction AntiMisting Fuels

The electrostatic atomization of hydrocarbon fuels provides precise, predictable electronic control of droplet size and distribution independent of fuel viscosity, density and flow rate. Phase I will focus on demonstrating that electrostatic fuel preparation makes combustion performance in an ambient combustion environment insensitive to the presence of anti-misting fuel additive (FM-9). A hybrid Lean Direct Injection nozzle incorporating electrostatic primary fuel flow atomization for ignition, idle and low power operation, and conventional air assisted secondary flow atomization for high throughput operation will be developed for these tests.Phase I testing will focus on evaluating the ability of electrostatic fuel preparation of anti-misting kerosene to provide superior atomization/dispersion under the low flow rate conditions (ignition, idle, low power) that have heretofore been associated with poor atomization performance from conventional systems. Upon conclusion of testing, the atomizer will be delivered to NASA for evaluation testing with appropriate AMK blends in the combustion test facility. Nozzles will be designed and developed for engine combustion in Phase II. General Electric, Pratt & Whitney, and Honeywell have expressed interest in supporting the Phase II test program.