Trent XWB

Visão geral

The Trent XWB (eXtra Wide Body) é o motor comercial grande mais eficiente da Rolls-Royce and the exclusive powerplant for the Airbus A350 XWB family. Certified as the world's most thermally efficient large aero engine at entrada em serviço, the Trent XWB achieves its performance through a combination of an advanced arquitetura de três eixos (unique to Rolls-Royce among major Western engine manufacturers), a high razão de pressão total of 50:1, and extensive use of advanced alloys and composite materials. Its razão de bypass of 9.3:1 — delivered through a 118-inch (3.0 m) composite fan — reduces specific fuel consumption to levels that make the A350 one of the most fuel-efficient fuselagem larga aircraft in airline service.

The Trent XWB's three-shaft design — with independent fan (LP), intermediate-pressure (IP), and high-pressure (HP) spools — allows each turbine stage to operate at its optimal speed, unlike the two-shaft designs used by GE Aerospace and Pratt & Whitney. This architecture enables shorter, lighter turbomachinery and contributes to the engine's efficiency advantage. The Trent XWB is the sole engine for the A350 — Airbus and Rolls-Royce agreed to an exclusive arrangement — which concentrates the entire A350 pós-venda revenue stream with Rolls-Royce through TotalCare power-by-the-hour service agreements, a strategically crucial long-term revenue source.

Especificações técnicas

Variantes

The Trent XWB family comprises two primary operational variants. The Trent XWB-84 (84,000 lbf / 374 kN) is the standard powerplant for the A350-900, the variante do A350 mais popular. The Trent XWB-97 (97,000 lbf / 431 kN) was developed for the larger and heavier A350-1000, requiring a complete redesign of the LP turbine and a new turbina de pressão intermediária to achieve 15% more thrust than the -84 while maintaining the same fan diameter. The -97 also introduced a counter-rotating IP turbine to recover swirl energy, an innovation from Rolls-Royce's advanced development programs. A potential Trent XWB-76 variant for a possible A350-800 was studied but shelved when Airbus cancelled the A350-800 program in 2014.

Aplicações em aeronaves

• Airbus A350-900: Trent XWB-84 (84,000 lbf) — motor exclusivo; variante do A350 mais popular, 300–350 passengers in typical layout
• Airbus A350-1000: Trent XWB-97 (97,000 lbf) — motor exclusivo; maior A350, competindo com 777-300ER

História do desenvolvimento

Rolls-Royce launched the Trent XWB development in 2006 when Airbus selected Rolls-Royce as the motor exclusivo supplier for the A350. The first Trent XWB engine test ran in June 2010 at Rolls-Royce's Dahlewitz facility in Germany. The engine flew for the first time on an A380 flying testbed in February 2012 for high-altitude performance validation. EASA certification of the Trent XWB-84 was achieved in February 2013. Qatar Airways launched A350-900 serviço comercial in January 2015 with the Trent XWB-84. Development of the higher-thrust -97 variant for the A350-1000 was certified in November 2016, with Qatar Airways again serving as cliente de lançamento in February 2018. Early in-service experience revealed some turbina de pressão intermediária blade durability issues that were addressed through redesigned blades delivered from 2020 onward. The Trent XWB has proven one of the industry's most reliable fuselagem larga engines, with Qatar Airways and Singapore Airlines reporting exceptional dispatch rates. As of 2025, aproximadamente 2,100 Trent XWB engines had been delivered, with Rolls-Royce's TotalCare contracts ensuring decades of recurring pós-venda revenue tied to A350 flying hours.