Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
"One-Piece" Jet Engine Fan?  
User currently offlineMr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8
Posted (14 years 5 months 3 weeks 11 hours ago) and read 3994 times:

Hi guys.

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?

Chris  Smile

"Just a minute while I re-invent myself"
4 replies: All unread, jump to last
User currently offlineDesertJets From United States of America, joined Feb 2000, 7907 posts, RR: 14
Reply 1, posted (14 years 5 months 3 weeks 10 hours ago) and read 3960 times:

The Williams FJ44, first used on the Cessna CitationJet is milled from a single chunk of titanium I believe. I guess it saves some weight and reduces another thing that could break.

Stop drop and roll will not save you in hell. --- seen on a church marque in rural Virginia
User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4300 posts, RR: 34
Reply 2, posted (14 years 5 months 3 weeks 10 hours ago) and read 3957 times:

The new citations have them as do alot of the other new biz jets. They replace the "fir-tree" type fan blades that you hear clinking while they are turned off on the ground and spinning in the wind.

Chicks dig winglets.
User currently offlineMr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8
Reply 3, posted (14 years 5 months 3 weeks 9 hours ago) and read 3958 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?

Chris  Smile

"Just a minute while I re-invent myself"
User currently offlineVc10 From United Kingdom, joined Nov 2001, 1468 posts, RR: 15
Reply 4, posted (14 years 5 months 3 weeks 7 hours ago) and read 3939 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

Top Of Page
Forum Index

Reply To This Topic "One-Piece" Jet Engine Fan?
No username? Sign up now!

Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)

Similar topics:More similar topics...
"Coke Wash" Cleaning Of A Jet Engine? posted Tue Feb 22 2005 18:38:04 by Mr Spaceman
Jet Engine "Extinguisher Relief Indicator"? posted Fri Dec 19 2003 00:03:23 by Mr Spaceman
What Is Jet Engine "Inhibitor" Made Of? posted Tue Apr 1 2003 22:07:51 by Mr Spaceman
Jet Engine Igniter Flame "Source"? posted Wed Sep 26 2001 21:00:30 by Mr spaceman
"Buying An Engine" posted Sun Oct 30 2005 01:05:05 by Dash 80
Single Engine Turboprop "Ratings" posted Wed Sep 21 2005 01:34:56 by Corey07850
Strange "pulsing" Of Jet Engines posted Thu Aug 12 2004 18:17:48 by Indianguy
Jet Engines And "dirty" Runways posted Mon Apr 26 2004 21:05:53 by KjBersas
Jet Engines: Do They Ever Need To "rest"? posted Mon Apr 12 2004 10:09:25 by Aguilo
Only "One" Shot At Landing For A Dash-8? posted Thu Jan 23 2003 23:30:57 by Mr Spaceman

Sponsor Message:
Printer friendly format