Engine manufacturers constantly trade claims over whose product performs best, traditionally comparing apples to apples, turbofan to turbofan. But as the battle to power the Airbus A320NEO intensifies, engine makers increasingly are exchanging fire over their technology choices. Pratt & Whitney’s success in winning five applications for its geared turbofan (GTF)—and defeating conventional turbofan offerings on four of them—has changed the tone of the engine war of words. No more apples to apples, it’s now architecture against architecture. Read more here….