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Rolls-Royce vs General Electric: Comparing power in commercial aircraft engines

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Rolls-Royce vs General Electric: Comparing power in commercial aircraft engines
Policy
Webp tufan
Tufan Erginbilgiç CEO of Rolls-Royce | Official Website

The commercial aircraft engine market is largely dominated by Rolls-Royce and GE Aerospace, with the Airbus A350 and Boeing 777X being exclusively powered by their respective engines, the Trent XWB and GE9X. The A350 is the newest widebody aircraft, having entered service in 2015, while the 777X is an updated version of a design from 1995.

Rolls-Royce currently supplies engines for about 46% of widebody aircraft on order, with GE Aerospace accounting for approximately 54%. Pratt & Whitney has shifted focus to narrowbody engines. In the widebody sector, Rolls-Royce powers Airbus models like the A330neo and A350 with its Trent series engines. Meanwhile, GE Aerospace supplies Boeing's widebodies such as the Dreamliner and upcoming 777X.

The Trent XWB turbofan has two variants: the XWB-84 for the A350-900 and XWB-97 for larger models like the A350-1000. The XWB-84 produces 84,000 lbf of thrust while the XWB-97 reaches up to 97,000 lbf. In comparison, GE Aerospace claims that its GE9X engine offers a rated takeoff thrust of 110,000 lbf but can achieve up to 134,300 lbf in testing conditions.

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GE's GE9X boasts a bypass ratio of 10:1 compared to Trent XWB's ratio of 9.6:1. This contributes to better fuel efficiency according to GE Aerospace, which asserts that it provides a specific fuel consumption improvement over previous engines. Despite this advantage in power and efficiency metrics like bypass ratio and fan diameter (134 inches versus Trent's 118 inches), factors such as reliability and noise emissions also play crucial roles in engine selection.

Rolls-Royce states that its XWB engine offers a significant fuel advantage over earlier models due to innovations aimed at improving fuel consumption further by at least another one percent annually. Both companies are committed to ongoing enhancements throughout their engines' operational lifespans.

Despite these technical specifications favoring raw power metrics for GE9X over Trent XWB variants, airlines consider multiple factors when choosing between them—ranging from range capabilities where Airbus claims superiority with its A350 models' ranges—to order volumes reflecting current market preferences.

Boeing has secured firm orders for over five hundred units of its new model featuring exclusive use of GE9X engines while Airbus continues receiving substantial interest in its A350 line equipped solely with Rolls-Royce’s offerings; thus highlighting how strategic decisions extend beyond mere performance figures alone into broader considerations involving operational needs alongside financial implications across global fleets worldwide today.

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