Trent XWB

Descripción general

The Trent XWB (eXtra Wide Body) es el motor comercial grande más eficiente de Rolls-Royce and la planta motriz exclusiva para el Airbus A350 XWB family. Certificado como el motor aeronáutico grande más eficiente térmicamente del mundo en su entrada en servicio, the Trent XWB logra su rendimiento mediante una combinación de an advanced three-shaft architecture (única de Rolls-Royce entre los principales fabricantes de motores occidentales), una alta relación de presión total de 50:1, and uso extensivo de aleaciones avanzadas y materiales compuestos. Its bypass ratio of 9.3:1 — delivered through a 118-inch (3.0 m) composite fan — reduce el consumo específico de combustible a niveles que hacen del A350 una de las aeronaves de fuselaje ancho más eficientes en combustible en servicio aéreo.

The Trent XWB's three-shaft design — with independent fan (LP), intermediate-pressure (IP), and high-pressure (HP) spools — permite que cada etapa de la turbina opere a su velocidad óptima, unlike the two-shaft designs used by GE Aerospace and Pratt & Whitney. Esta arquitectura permite turbomaquinaria más corta y ligera and contribuye a la ventaja de eficiencia del motor. The Trent XWB is the sole engine for the A350 — Airbus y Rolls-Royce acordaron un acuerdo de exclusividad — que concentra todo el A350 flujo de ingresos de posventa con Rolls-Royce a través de acuerdos de servicio TotalCare de pago por hora de vuelo, una fuente de ingresos a largo plazo estratégicamente crucial.

Especificaciones 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 del A350 más 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 intermediate-pressure turbine 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.

Aplicaciones en aeronaves

• Airbus A350-900: Trent XWB-84 (84,000 lbf) — motor exclusivo; variante del A350 más popular, 300–350 passengers in typical layout
• Airbus A350-1000: Trent XWB-97 (97,000 lbf) — motor exclusivo; A350 más grande, compitiendo con 777-300ER

Historia del desarrollo

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 revenue service 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 launch customer in February 2018. Early in-service experience revealed some intermediate-pressure turbine 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 widebody engines, with Qatar Airways and Singapore Airlines reporting exceptional dispatch rates. As of 2025, approximately 2,100 Trent XWB engines had been delivered, with Rolls-Royce's TotalCare contracts ensuring decades of recurring aftermarket revenue tied to A350 flying hours.