superstring
Posts: 46
Joined: Sat Jun 02, 2007 3:30 pm

Trent 900 Vs. EA GP7200 Fuel Burn

Fri Aug 10, 2007 7:40 pm

First of all I want to encourage everybody not to put biased opionios into this thread (because very often such topics lead to a RR vs. GE duel, so try to be objective)

Well my question is very simple. Is there a (significant) fuel burn difference between the GP7200 and the trent 900?

If so (well EA claims to be more efficient) how big is this differenvce and what does this mean for the operating envelope (I could read that the trent 900 has a weight advantage so maybe on shorter missions <5000nm the trent 900 would compensate for this disadvantage). Maybe anyone has also got some data about the noise emissions.
 
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zeke
Posts: 9850
Joined: Thu Dec 14, 2006 1:42 pm

RE: Trent 900 Vs. EA GP7200 Fuel Burn

Sat Aug 11, 2007 12:02 am

Quoting Superstring (Thread starter):
Well my question is very simple. Is there a (significant) fuel burn difference between the GP7200 and the trent 900?

20 nm difference, the GP7200 will do 8000 nm, while a Trent 900 will do 7980 nm with the same mission.
We are addicted to our thoughts. We cannot change anything if we cannot change our thinking – Santosh Kalwar
 
eelonghorn
Posts: 42
Joined: Wed Apr 19, 2006 4:52 am

RE: Trent 900 Vs. EA GP7200 Fuel Burn

Sun Aug 12, 2007 12:59 am

Quoting Zeke (Reply 1):
20 nm difference, the GP7200 will do 8000 nm, while a Trent 900 will do 7980 nm with the same mission.

one forth of one percent ~(20/7980) is not

Quoting Superstring (Thread starter):
(significant)
 
baroque
Posts: 12302
Joined: Thu Apr 27, 2006 2:15 pm

RE: Trent 900 Vs. EA GP7200 Fuel Burn

Mon Aug 13, 2007 12:05 am

Quoting Zeke (Reply 1):
20 nm difference, the GP7200 will do 8000 nm, while a Trent 900 will do 7980 nm with the same mission.

Bearing in mind climb performance differences, would that mean the Trent would have slightly lower fuel consumption on shorter hops such as Syd-Sing?

If that were the case, the two engine types could be about the same on Syd to LHR???

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