Propulsion

GEnx Engine

GEnx engine

Delivering Proven Performance

As the fastest-selling, widebody jet engine in GE Aerospace history with more than 2,700+ engines in-service and on order, the GEnx delivers proven performance for the Boeing 787 Dreamliner and Boeing 747-8.

The engine’s leading-edge technologies and advanced architecture offer:

Highest Reliability

99.98 dispatch rate, 3 times higher time on wing, and 3 times fewer significant events

Most Efficient

1% better SFC vs. the competition for a 3,000 nautical mile mission

Highest Availability

2% higher annual utilization means 7 more days per year of aircraft availability

Most Advanced Technology

Advanced materials provide greater durability, lighter weight, and higher LLP lives

With its superior efficiency, the GEnx powers many of the longest 787 Dreamliner routes, including Qantas’s 787-9 recording-breaking non-stop flight from New York to Sydney.

genx quote engine

Designed for Performance and Reliability

Less Line Maintenance

As the world’s first commercial engine with both a carbon fiber composite front fan case and fan blades, the GEnx fan module is lighter in weight and corrosion resistant, offering customers less line maintenance and improved reliability with less noise. GEnx is the quietest engine GE produces.

More Efficient Design

After introducing composite fan blades on the GE90 engine in 1995, we took the technology to a new level with the GEnx. The carbon-fiber composite fan blades on the GEnx engine feature a more efficient design, a reduced blade count (from 22 to 18 fan blades) and a composite fan case for further weight reduction.

Cutting Edge Materials

Cutting edge materials including additively manufactured parts. The first 3D printed part installed on a GEnx was approved by the FAA in November 2018 for the power door opening system (PDOS) bracket.

Reduces NOx

The GEnx's innovative lean burning twin-annular pre-swirl (TAPS) combustor dramatically reduces NOx and other regulated gases below today's regulatory limits and enhances durability.

Increased Efficiency

The GEnx low-pressure turbine (LPT) is lighter and more efficient than its predecessor and incorporates next-generation 3D aerodynamics. It also introduces Titanium Aluminide blades to stages 6 and 7, reducing engine weight by approximately 300 lbs. and contributing to increased fuel efficiency on the GEnx engine.



GEnx Engine Models




GEnx Engine Model Comparison

-1B70 (787-8)
-1B74/75 (787-9)
-1B76 (787-10)
-2B67B (747-8)
Take off thrust
69,800
74,100
76,100
66,500
Bypass ratio (takeoff / top-of-climb)
9.0 / 8.3
8.8 / 8.1
8.8 / 7.9
8.0 / 7.4
Overall pressure ratio (takeoff / top-of-climb)
43.8 / 53.3
46.3 / 55.4
47.4 / 58.1
44.7 / 52.4
Air Mass Flow (takeoff, lbs-mass/sec)
2559
2624
2658
2297
Fan Diameter (in)
111.1"
111.1"
111.1"
104.7"
Base Engine Length (in)*
184.7
184.7
184.7
169.7
Compressor Stages (Fan/Booster/HPC)
1/4/10
1/4/10
1/4/10
1/3/10
Turbine Stages (HP/LP)
2/7
2/7
2/7
2/6
Combustor
SAC/TAPS
SAC/TAPS
SAC/TAPS
SAC/TAPS
Control
FADEC III
FADEC III
FADEC III
FADEC III
Bearings
2B+4R
2B+4R
2B+4R
2B+4R