Pratt & Whitney’s Alan Epstein, VP of Technology & Environment, discusses new engine technology in Jetrader, the magazine of the trade group ISTAT. (This is a two-page article.)

Epstein discusses what he calls a 25-30 year gap in new technology engines for single-aisle airplanes; open-rotors, of course, the geared turbo-fan; biofuels; and the shape of airplanes by 2035.

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