The Jet Engine Efficiency Race: Pratt vs. GE

The quest for fuel efficiency leads to unconventional designs

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By Joshua Brustein

July 11, 2014 at 12:21 AM UTC

This article is for subscribers only.

This article is part of the July 14, 2014 issue of businessweek.

The Jet Engine Efficiency Race: Pratt vs. GE — Site 3B, 1 of 10 test sites at the GE Aviation Peebles Test Operation in Ohio. The tower houses fuel and other service lines required to operate an engineCourtesy GE Aviation

(Updates second paragraph to clarify the origins of the materials used in the Leap engine’s fan blades.)