Mr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 9 Posted (12 years 11 months 2 weeks 2 days 15 hours ago) and read 2820 times:
First off...here's some quick info on the engines that power the new Raytheon Premier 1 corporate jet.
The type of engines are the Williams-Rolls FJ44-2A Turbofan, each with 2,300 pounds of static thrust and a 3.3 to 1 bypass ratio.
This Williams engine has a "One-Piece Fan" with wide chord blades.
The article I read about the engines on the Premier 1 only mentioned that it's Williams engines had a One-Piece fan. It didn't mention anything about this One-Piece fan being a "first type" unique feature, etc.
So I'm wondering if there are any other jet engines out there that have a One-Piece fan at the beginning of their compressor stage? If so, are they on small corporate aircraft or large airliners?
Mr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 9
Reply 3, posted (12 years 11 months 2 weeks 2 days 13 hours ago) and read 2781 times:
Hi guys, Thanks for your replies.
I was thinking ...what if these engines experienced a bird strike, or FOD, or even a bad hail storm and one of their fan blades did get damaged. You would have to replace the "whole" front compressor fan instead of just a few removable blades that could be replaced. This sounds a lot more expensive. However, if these one-piece fans are made of titanium....they must be very strong and impact resistant.
Thanks for letting me know that other corporate jets also have these types of intake fans. Do you think airliners ever will?
Vc10 From United Kingdom, joined Nov 2001, 1412 posts, RR: 16
Reply 4, posted (12 years 11 months 2 weeks 2 days 11 hours ago) and read 2762 times:
If you have seen an engine which has suffered a bird strike you will know that the bird itself might only damage a few blades?, but those blades usually go on to do untold damage to the rest of the engine