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Reducing Aviation Fuel Costs with Non-Destructive Testing.
| 题名： | Reducing Aviation Fuel Costs with Non-Destructive Testing. |
| 作者： | Schemmel, P. J. |
| 关键词： | Aircraft fuels, Chemical reactions, Cost reduction, Nondestructive tests, Thermal control coatings, Manufacturing, Gas turbine engines, Fuel flow, Estimating, Failure |
| 摘要： | Thermal barrier coatings (TBCs) are absolutely critical to the efficient and safe operation of gas turbine engines (GTEs). Manufacturing TBCs is a complex chemical, thermal and mechanical process that requires precise control. And yet, the variation in life of a TBC operated within a GTE is large. This variation ultimately reduces operational performance via a designed reduction to the turbine entry temperature, T4.This paper makes the case for developing advanced THz and sub-millimeter based nondestructive testing (NDT) techniques, capable of estimating when TBC components will fail. Such a technique could identify TBCs with low expected remaining useful lifetimes, directly after production. These TBCs could be re-manufactured, thereby not only improving their own expected useful life, but also the mean lifetime of the entire manufacturing population. A series of calculations demonstrates that TBCs with enhanced life characteristics can withstand higher T4 temperatures. Assuming that a GTE is to operate at a constant thrust, this increased temperature can be traded for a reduction in fuel flow. An analysis comparing fuel savings to manufacturing costs shows that substantial savings are achievable. |
| 报告类型： | 科技报告 |
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