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The '''GE/RR F136''' is an advanced General Electric/Rolls-Royce Fighter Engine Team''' specifically for the F-35 Lightning II.

The GE/RR Fighter Engine Team includes GE Aviation in Cincinnati, Ohio; Rolls-Royce plc in Bristol, England and Indianapolis, Indiana, USA. The two companies hold 60% and 40% respectively. GE in turn has a partnership with Turkish Engine Industries (TEI) and is working together on some parts of the F-136 engine<ref>http://www.tei.com.tr/1/en/news.asp?nid=46</ref>.

== Development ==

All initial F-35s will be powered by the Pratt & Whitney F135. After 2010, the engine contracts will be competitively tendered from Lot 6 onward. The Rolls-Royce LiftSystem will be used in the F-35B STOVL variant regardless of which powerplant is selected, which incorporates:

* Rolls Royce LiftFan
* Engine to fan driveshaft
* Three-bearing swivel module (thrust vectoring)
* Roll posts

The engine delivers 18,000&nbsp;lb<sub>f</sub> (80&nbsp;kN), the LiftFan 20,000&nbsp;lb<sub>f</sub> (89&nbsp;kN) cold thrust and the roll posts 1,950&nbsp;lb<sub>f</sub> (8.7&nbsp;kN) for a sum of 39,950&nbsp;lb<sub>f</sub> (178&nbsp;kN) for the entire system, placing it in the 40,000&nbsp;lb<sub>f</sub> (178&nbsp;kN) thrust class. This compares with the maximum thrust of 23,800&nbsp;lb<sub>f</sub> (106&nbsp;kN) for the Harrier's Rolls-Royce Pegasus engine.

On July 21 2004 the F136 began full engine runs at GE's Evendale, Ohio facility. The engine ran for over an hour during two separate runs.

In August 2005, the United States Department of Defense awarded the GE and Rolls-Royce team a $2.4 billion contract to develop its F136 engine. The contract was for the system development and demonstration (SDD) phase of the F136 initiative, scheduled to run until September 2013.

However, the US Defense budget announced on February 6 2006 excluded the F136 — leaving Pratt & Whitney, maker of the F135 engine, as the sole provider of engines for the Lockheed Martin F-35 fighters. Congress, however, overturned this request and allocated funds for FY 2007 later in 2006.

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'''ゼネラル・エレクトリック/ロールス・ロイス F136'''とはロールス・ロイスの戦闘機エンジンチームがF-35 ライトニング II向けに開発中の先進的なターボファンエンジンである。

GE/RR 戦闘機エンジンチームはGEアビエーションとロールスロイスの共同事業である。GEが60% RRが40%出資している。GEはトルコのTurkish Engine Industries (TEI)も参加している。<ref>http://www.tei.com.tr/1/en/news.asp?nid=46</ref>　GEとRRはプラット＆ホイットニーのF135に負けたので巻き返しを図る。

== 開発 ==
初期のF35にはF135が搭載される。2010年以降互換性のあるF136も搭載される予定である。ロールスロイスのリフトファンは搭載エンジンにかかわらず、F-35B　STOVL版に搭載される。
分担:

* ロールスロイス　リフトファン
* エンジンからファンの開発
* 3軸スイベルモジュール（推力偏向）
* ロールポスト（ロール軸制御）