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Lufthansa To Choose Trent 900 For The A380  
User currently offlineRacko From Germany, joined Nov 2001, 4887 posts, RR: 19
Posted (14 years 3 weeks 1 day 17 hours ago) and read 4210 times:

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

6 replies: All unread, jump to last
User currently offlineVoodoo From Niue, joined Mar 2001, 2175 posts, RR: 0
Reply 1, posted (14 years 3 weeks 1 day 17 hours ago) and read 4147 times:

If true,
I think R-R must be saying WHEW big time.

` Yeaah! Baade 152! Trabi of the Sky! '
User currently offlineSailorOrion From Germany, joined Feb 2001, 2058 posts, RR: 5
Reply 2, posted (14 years 3 weeks 1 day 17 hours ago) and read 4140 times:

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


User currently offlineOxygen From Hong Kong, joined Sep 1999, 675 posts, RR: 1
Reply 3, posted (14 years 3 weeks 1 day 13 hours ago) and read 4078 times:

What are magnetic bearings ?

User currently offlineEg777er From United Kingdom, joined Feb 2000, 1844 posts, RR: 13
Reply 4, posted (14 years 3 weeks 1 day 13 hours ago) and read 4073 times:

It's confirmed:


The order is worth $750m to Rolls.

Go RR!

User currently offlineGDB From United Kingdom, joined May 2001, 13604 posts, RR: 76
Reply 5, posted (14 years 3 weeks 1 day 10 hours ago) and read 4017 times:

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.

User currently offlineKlaus From Germany, joined Jul 2001, 21652 posts, RR: 53
Reply 6, posted (14 years 3 weeks 16 hours ago) and read 3958 times:

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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