Posts: 4548
Joined: Tue Nov 06, 2001 12:06 am

Lufthansa To Choose Trent 900 For The A380

Tue May 07, 2002 7:11 pm

ATW reports that Lufthansa is going to choose the RR Trent 900 for it's 15 Airbus A380 aircraft.

Full article: http://www.atwonline.com/indexfull.cfm?newsid=1848

VERY surprising for me, i thought the engine alliance would get the deal
Posts: 1977
Joined: Mon Mar 19, 2001 12:14 am

RE: Lufthansa To Choose Trent 900 For The A380

Tue May 07, 2002 7:22 pm

If true,
I think R-R must be saying WHEW big time.
` Yeaah! Baade 152! Trabi of the Sky! '
Posts: 1960
Joined: Tue Feb 06, 2001 5:56 pm

RE: Lufthansa To Choose Trent 900 For The A380

Tue May 07, 2002 7:26 pm

There have been rumors around that R-R is experimenting (or researching) magnetic bearings for aircraft engines. Does anyone have info on this?

Posts: 633
Joined: Tue Sep 14, 1999 12:27 am

RE: Lufthansa To Choose Trent 900 For The A380

Tue May 07, 2002 11:35 pm

What are magnetic bearings ?
Posts: 1782
Joined: Fri Feb 04, 2000 11:11 pm

RE: Lufthansa To Choose Trent 900 For The A380

Tue May 07, 2002 11:50 pm

Posts: 12886
Joined: Wed May 23, 2001 6:25 pm

RE: Lufthansa To Choose Trent 900 For The A380

Wed May 08, 2002 2:30 am

Our R/R Olympus rep. at work told me about it this morning, a coup for R/R but the Trent series are already on the A340-600's.
Posts: 20713
Joined: Wed Jul 11, 2001 7:41 am


Wed May 08, 2002 8:56 pm

Magnetic bearings eliminate all mechanical parts of conventional bearings. They operate contact-free and need no lubrication since the rotor is kept floating by a magnetic field.

Contrary to the conventional ball/roller bearings there is no more mechanical friction and no wear and tear. In addition, by using electromagnets, an active magnetic bearing can actively counteract vibration of the rotor, thereby decreasing noise and increasing the lifespan of the remaining engine components. Since it´s almost friction-free, this technology would possibly help reducing the fuel burn even further (subtract from that the energy required to operate the bearings).

Without mechanical wear, magnetic bearings could also have much longer lifespans and longer maintenance intervals.

So in principle, the advantages are pretty impressive. If they can actually make it work, reliably...  Wink/being sarcastic

Problems could be in added complexity and possibly weight (although ball bearings aren´t exactly lightweight, either).

More: http://www.synchrony.com/MBforUAV.htm and http://www.synchrony.com/magbear.htm

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