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Lufthansa To Choose Trent 900 For The A380  
User currently offlineRacko From Germany, joined Nov 2001, 4857 posts, RR: 20
Posted (12 years 4 months 2 weeks 14 hours ago) and read 2939 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, 2074 posts, RR: 0
Reply 1, posted (12 years 4 months 2 weeks 14 hours ago) and read 2876 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: 6
Reply 2, posted (12 years 4 months 2 weeks 14 hours ago) and read 2869 times:

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

SailorOrion


User currently offlineOxygen From Hong Kong, joined Sep 1999, 674 posts, RR: 1
Reply 3, posted (12 years 4 months 2 weeks 10 hours ago) and read 2807 times:

What are magnetic bearings ?

User currently offlineEg777er From United Kingdom, joined Feb 2000, 1837 posts, RR: 14
Reply 4, posted (12 years 4 months 2 weeks 9 hours ago) and read 2802 times:

It's confirmed:

http://news.ft.com/ft/gx.cgi/ftc?pagename=View&c=Article&cid=FT3852KPX0D&live=true&useoverridetemplate=ZZZ99ZVV70C&tagid=IXLB0PYY8CC

The order is worth $750m to Rolls.

Go RR!


User currently offlineGDB From United Kingdom, joined May 2001, 13206 posts, RR: 77
Reply 5, posted (12 years 4 months 2 weeks 7 hours ago) and read 2746 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, 21460 posts, RR: 53
Reply 6, posted (12 years 4 months 1 week 6 days 12 hours ago) and read 2687 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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