Pratt-Whitney has launched the energy-efficient Geared Turbofan engine to power the new Mitsubishi Regional Jet. The airframe application for the Geared Turbofan was designed to deliver a significant reduction in fuel burn and noise with lower environmental emissions and operating costs. The Mitsubishi Regional Jet is a 70 to 90 passenger aircraft. Mitsubishi expects a global demand of about 5,000 of the jets over the next 20 years.
The Geared Turbofan allows the engine's fan to operate independent of the low-pressure compressor and turbine, which results in greater fuel efficiency and a slower fan speed for less noise. Pratt-Whitney says the engine builds on more than 20 years of development with technology improvements in every module. Full-scale engine testing will begin later this year and flight testing is slated for 2008.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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