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#15
September 11th 06, 05:55 AM
posted to rec.aviation.piloting
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How much is autopilot on commercial flights today?
("Emily" wrote)
I work for a manufacturer of high-bypass turbofans and they're still extremely loud. I also live next to one of the busiest airports in the country. Believe me, there's not much difference between old and new. Not sure if Honda's "GE-Honda" HF118 Turbofan Engine qualifies as 'high-bipass' ....it is extremely quiet. On flybys at OSH, the HondaJet sounded like a handheld hairdryer, left running across the room - on medium. "The HF118 produces 1,700 lbf of thrust, and meets ICAO Stage IV noise requirements. The sole application as of 2006 is for the HA-420 HondaJet." http://en.wikipedia.org/wiki/Turbofan Learning about high-bypass turbofans.... g Montblack 
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