Editing Airbus A330 (section)

====Engines====
From the beginning of the TA9's development, a choice of [[aircraft engine|engines]] from the three major engine manufacturers, [[Rolls-Royce Holdings|Rolls-Royce]], [[Pratt & Whitney]], and [[GE Aviation]], was planned.{{sfn|Norris|Wagner|2001|p=44}} GE Aviation first offered the [[General Electric CF6#CF6-80C2|CF6-80C2]]. However, later studies indicated that more thrust was needed to increase the initial power capability from {{cvt|267|to|289|kN|lbf|lk=on|sigfig=3}}.{{sfn|Norris|Wagner|2001|pp=44–45}} GE enlarged the CF6-80C2 fan from {{convert|236|to|244|cm|in|sigfig=3}} and reduced the number of fan blades from 38 to 34 to create the [[General Electric CF6#CF6-80E1|CF6-80E1]] with a thrust of {{cvt|300|-|320|kN|lbf|sigfig=2}}.<ref>{{cite web|title=Model CF6-80E1|publisher=GE Aviation |url=http://www.geae.com/engines/commercial/cf6/cf6-80e1.html |access-date=25 January 2011|url-status=dead|archive-url=https://web.archive.org/web/20100925171954/http://geae.com/engines/commercial/cf6/cf6-80e1.html|archive-date=25 September 2010}}</ref>

<gallery mode="packed" heights="160px">
File:Trent 700 - DSC 8123-F-WWCR - MSN 1462 (10513329855) (cropped).jpg|Rolls-Royce's [[Trent 700]] features a [[exhaust mixer|mixed exhaust]].
File:Airbus A330-200F(F-WWYE) (4337113707).jpg|Pratt & Whitney's [[PW4000]] has a more conventional unmixed exhaust.
File:Airbus A330-203, Qantas JP6991416.jpg|The [[GE CF6]] also has an unmixed exhaust, but adds a pointed exhaust cone.
</gallery>

Rolls-Royce initially wanted to use the {{cvt|267|kN|lbf|adj=on|sigfig=3}} [[Rolls-Royce Trent#Trent 600 – First proposal|Trent 600]] to power Airbus's newest twinjet and the upcoming [[McDonnell Douglas MD-11]]. However, the company later agreed to develop an engine solely for the A330, the [[Rolls-Royce Trent 700|Trent 700]], with a larger diameter and {{cvt|311|kN|lbf|sigfig=3}} of thrust.{{sfn|Norris|Wagner|2001|p=47}} The A330 became the first Airbus aircraft for which Rolls-Royce supplied engines.{{sfn|Norris|Wagner|2001|p=44}}

Similarly, Pratt & Whitney signed an agreement that covered the development of the A330-exclusive [[Pratt & Whitney PW4000|PW4168]]. The company increased the fan size from {{cvt|94|in|m|sigfig=3}} to {{cvt|100|in|m|sigfig=3}},{{sfn|Norris|Wagner|2001|pp=45–46}} enabling the engine to deliver {{cvt|311|kN|lbf|sigfig=3}} of thrust. Like the CF6-80E1, 34 blades were used instead of the 38 found on the smaller PW4000 engines.<ref>{{cite web|title=PW4000-100|publisher=Pratt & Whitney |url=http://www.pw.utc.com/PW4000100_Engine|access-date=2015-07-04}}</ref>