Brad Mottier, vice president and general manager of GE Business and General Aviation, says that challenging Pratt & Whitney Canada for its lead in the 1,800- to 2,000-thrust-horsepower turboprop class can’t be done with the existing H80 series engines. The most powerful H80 series models are rated at 850 shp to ISA+19C, so they only have temperature margins to be uprated at about 1,000 shp with no flat rating. Mottier says the H80 core only can be grown for a modest power increase ...

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