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trex8
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GEnx On A346

Sat Nov 12, 2005 10:20 pm

If GE are going to develop a bleed GEnx for the 747Adv, wouldn't that be a good thing to hang off an A346/5?? Leaving aside any issues A and RR may have agreed to.
Also has anyone seen an specs in terms of size, weight for the new GEnX or Trent 1000/1700/ all I have seen is a 111in fan for the GEnx (which is actually less than a CF6-80E1 which really surprised me) and the new engines being a ton or two heavier than equivalent older ones.
 
airxliban
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RE: GEnx On A346

Sun Nov 13, 2005 6:30 am

The 744 engines are in the 60000 lb thrust range and presumably the 744 Adv engines will have even more thrust since it'll be a bigger plane.

The Trent 500s hanging off the 346 wings are available in 53k and 56k varieties, so there might be a discrepancy there.

In addition, Airbus might have some deal with RR about exclusivity for the 345/6. Not sure...what are everyone else's comments?
 
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zeke
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RE: GEnx On A346

Sun Nov 13, 2005 3:09 pm

Quoting Trex8 (Thread starter):
If GE are going to develop a bleed GEnx for the 747Adv, wouldn't that be a good thing to hang off an A346/5?? Leaving aside any issues A and RR may have agreed to.

Understand that RR are planning to put Trent 1000 technology (the RR equivalent to the GEnx) on the 340.

Don’t see the GEnx getting onto the 340, it has in larger fan diameter.

Both RR and GE are claiming around 15% improvements in the TSFC of the Trent 1000/GEnx engines, this alone should provide over 10% increases in range to the 340/744ADV.
 
F14D4ever
Posts: 306
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RE: GEnx On A346

Tue Nov 15, 2005 1:23 am

Quoting Trex8 (Thread starter):
Also has anyone seen an specs in terms of size, weight for the new GEnX or Trent 1000/1700/ all I have seen is a 111in fan for the GEnx (which is actually less than a CF6-80E1 which really surprised me)

You might have confused engine envelope diameter with fan diameter. CF6-80E1 fan diameter is 96 inches, more in line with what you (and I) expected.
 
prebennorholm
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RE: GEnx On A346

Tue Nov 15, 2005 8:08 am

Quoting Zeke (Reply 2):
Understand that RR are planning to put Trent 1000 technology (the RR equivalent to the GEnx) on the 340.

That's a very valid guess. All engine types are updated when feasible.

If the Trent 1000 and 1700 will perform as promissed, then no doubt the "new technology" will find its way down to at least the Trent 500 and 900.

But the Trent 500 has now flown for some years now while the Trent 1000 is still some way from taking to the air. So a revised Trent 500 is probably something which may happen well into next decade.

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