Date: 24 Mar 98 11:38:36 From: Chuanga@cris.com (H Andrew Chuang) Organization: Concentric Internet Services References: 1 2
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In article <airliners.1998.468@ohare.Chicago.COM>, Steve Lacker <firstname.lastname@example.org> wrote: >Pratt is hoping to run the fan at its optimum speed while simultaneously >running the LP compressor at *its* optimum speed, withouth having to use >a 3-shaft arrangement with its associated inefficiencies. The drawback >to geared fans has always been the gearbox, but Pratt is saying they can >use all the gearbox expertise they gained with their UDF (unducted fan) >program to get a reliable, small, efficient gearbox. UDF is GE's unducted fan which is not a geared-driven design. You're referring to P&W's ADP (Advance Ducted Propulsor). >Nope. They're aiming at a midsize engine. In fact, they're aiming RIGHT >at the CFM-56 family, hoping to cut into its market dominance. <opinion >mode on> They should have done this YEARS ago- Pratt was once THE >dominant maker in that market with the JT8D, and it still stands to this >day as one of the best aero engines of all time, bar none. But after the >JT8D 200 series, Pratt let that market segment go except through their >rather unsuccessful collaboration on the IAE V2500. I just hope they >haven't waited too long- CFM has a TIGHT hold on that market. </opinion >mode> It can all sum up in one word -- complacency. P&W cannot afford to be complacent anymore. Otherwise, P&W's commercial operation might soon follow Douglas's footstep. In the past few years, R-R seems to be following the Airbus model -- compete in all market segments at any cost. Hopefully, with a major thrust in developing new products for the next century, P&W will not have to take the Douglas's path.