Pratt&Whitney has run a modified F119 repeatedly at record turbine temperatures, demonstrating a new cooling concept that could boost efficiency, lower scheduled maintenance requirements and increase engine performance. The proprietary concept, called ``super cooling,'' allows Pratt engineers to more efficiently use cooling air diverted from a powerplant's core flow for thermal control in turbine blades. Pratt has been studying the concept since the mid-1980s and earlier ...

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