PW1100G GTF
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Technical Specifications
- Thrust
- 147,0 kN (33 000 lbf)
- Bypass Ratio
- 12,5:1
- Fan Diameter
- 2,061 m
- Pressure Ratio
- 42,0:1
- SFC
- 0,2630 lb/lbf·h
- Dry Weight
- 2 857 kg
- Length
- 3,229 m
- First Run
- 2013
- In Service
- 2016
Descripción general
The Pratt & Whitney PW1100G Geared TurboFan (GTF) es el primer motor turbofán con engranaje de producción para una aeronave comercial de fuselaje estrecho importante. En su núcleo se encuentra una caja de reducción posicionada entre el fan y el compresor de baja presión, permitiendo que el fan de gran diámetro gire a aproximadamente la mitad de la velocidad de la turbina que lo impulsa. Este desacoplamiento permite que ambos componentes operen simultáneamente a sus velocidades de rotación aerodinámicamente ideales — una hazaña imposible en una arquitectura convencional de accionamiento directo.
The result is a bypass ratio of 12.5:1, sustancialmente mayor que la 6:1 relación típica de los motores de fuselaje estrecho anteriores, ofreciendo aproximadamente 16 percent mejor eficiencia de combustible que los CFM56 motores que reemplaza en la Airbus A320 family. The engine compite directamente con el CFM LEAP-1A on the A320neo (New Engine Option) platform, dando a las aerolíneas la opción de plantas motrices en el fuselaje estrecho remotorizado.
Especificaciones técnicas
| Especificación | Valor |
|---|---|
| Empuje (máx.) | 147 kN / 33,000 lbf |
| Relación de derivación | 12.5:1 |
| Diámetro del fan | 2.061 m (81.1 in) |
| Relación de presión total | 42:1 |
| Peso en seco | 2,857 kg |
| Longitud | 3.229 m |
| SFC (crucero) | 0.2630 lb/(lbf·h) |
| Primera prueba | 2013 |
| En servicio | 2016 |
Variantes
- PW1124G: Lower-thrust variant at 24,000 lbf for the A319neo.
- PW1127G/PW1127GA: Primary variant for the A320neo at 27,000 lbf, the most widely ordered rating in the family.
- PW1133G: Higher-thrust variant at 33,000 lbf for the A321neo and A321XLR, supporting the heavier and longer-range aircraft.
Aplicaciones en aeronaves
Historia del desarrollo
Pratt & Whitney had been developing geared turbofan technology since the 1990s in collaboration with MTU Aero Engines and others. The PW1100G programme formally launched around 2008 when Airbus selected it as one of two engine options for the A320neo. First engine run occurred in 2013 and FAA certification was achieved in December 2015. Lufthansa placed the engine into commercial service in January 2016 on its A320neo fleet. Early service revealed unexpected durability problems in the combustor liners and high-pressure turbine hardware, leading to mandatory inspections and some aircraft groundings in 2023 when powdered metal contamination in engine components was identified. Pratt & Whitney initiated a multi-year fleet inspection and remediation campaign that affected hundreds of aircraft globally. Despite these challenges, the PW1100G's fuel and noise performance advantages remain intact, and production has continued at high rates.