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Purdue innovators develop new stall warning technology for gas turbine engines Purdue University innovators developed a new stall warning technology for gas turbine engines. (Image provided) WEST LAFAYETTE, Ind. – Gas turbine engines often are considered the “heart” of airplanes and ships. Now, Purdue University innovators looking for new solutions to reduce emissions and enhance operations of these engines have come up with technology similar to tests used on human hearts. The Purdue researchers developed an electrocardiogram-type technology for gas turbine engines to monitor rhythms and warn of potential compressor stall. “An effective stall warning and avoidance technique is of great value to gas turbine engines used in aviation and land-based applications,” said Nicole Key, a professor of mechanical engineering at Purdue. “Stall is a type of flow instability in compressors that sets the low-flow limit for gas turbine engine operation. When the compressor stalls,

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