QANTAS747-438
Topic Author
Posts: 1659
Joined: Mon Jan 22, 2001 7:01 am

777 Engine Differences

Thu Oct 30, 2003 10:28 am

I'm real interested in finding out about the 777 engines and what the differences are between the Rolls Royce, P&W, and GE engines.

1) What are the differences between the three engines for the various 777 models?

2) What does each engine have that's special about it over the others?

3) Why would an airline choose one engine over another?

Thanks a lot!
My posts/replies are strictly my opinion and not that of any company, organization, or Southwest Airlines.
 
jetdoctor
Posts: 220
Joined: Wed Aug 08, 2001 2:16 pm

RE: 777 Engine Differences

Thu Oct 30, 2003 12:30 pm

QANTAS747-438

I can broadly answer #3 for you.
An airlines selection of engine can depend on many things, but usually comes down to money, fuel economy and reliability.
An airline buys/leases the airframe, and then can bargain with the "Big 3" as to why they should purchase/lease their engines. Certain performance guarantees can be made, or quantity discounts if say the airline is buying 20 aircraft (40 engines plus spares), or it can come down to product support packages too.

All in all an airline wants a cheap engine that will run forever and give it the most miles to the gallon.

Hope this sorta answers #3 for ya

Jetdoctor
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