Power plants – Combustion products used as motive fluid – With exhaust treatment
Reexamination Certificate
2008-01-01
2008-01-01
Rodriguez, William H. (Department: 3746)
Power plants
Combustion products used as motive fluid
With exhaust treatment
Reexamination Certificate
active
07313909
ABSTRACT:
A high emissivity (Hi-E) coating for use on the exhaust baffles of HIRSS systems. HIRSS systems were developed to reduce the infrared (IR) signature of helicopter engines. Increasing operating temperatures of helicopter engines have made the HIRSS systems less effective. An infrared coating applied over selected portions of the HIRSS reduces the IR of the system. The Hi-E coating comprises, in weight percent, 30-80% refractory oxide pigment, 5-20% binder, 1-15% potassium oxide, optionally up to about 15% glass-forming material and the balance refractory oxide powder. When applied to provide a surface finish of 1100Ramicroinches or coarser, the coated HIRSS has a significantly reduced hemispherical reflectance in the IR frequency range.
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Gastrich Aaron Dennis
Jasany John Michael
Manning Timothy Lance
Murphy Jane Ann
Skoog Andrew Jay
General Electric Company
McNees Wallace & Nurick LLC
Rodriguez William H.
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