NASA Software Promotes Airline Fuel Efficiency

Allen Thomson wrote:
Yeah. Back in the early 90s I was on a nonstop from Seattle to
Dulles on a 757 (which I generally loathe) and the pilot was
chattering the whole way about the major winds aloft. IIRC, we made
the trip, wheels up to wheels down, in about four hours or maybe a
little more, so I guess he was right.

Four hours would have been a ground speed of something like 2298/4 or
574 MPH.

Elsewhere I've heard it said that the 757 is "overpowered" - I guess
something of a hot-rod of airliners. IIRC it was the 727 replacement,
which if I recall correctly was not exactly pokey. Wikipedia says the
cruise speed for the 757 is 530 MPH, and probably for for some time on
either side of that ATC probably has them lower than cruise, so yeah,
they probably got a good shove from winds. Just be glad you weren't
travelling in the other direction

rick jones
--
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