What is geared turbofan?
A geared turbofan engine is a variant of a conventional turbofan engine in which a reduction gearbox is installed between the fan and the low pressure (low speed) turbine. This lower speed means that additional compressor and turbine stages are required to maintain acceptable component efficiencies.
What is the advantage of geared turbofan engine?
In a geared turbofan, a planetary reduction gearbox between the fan and the LP shaft allows the latter to run at a higher rotational speed thus enabling fewer stages to be used in both the LP turbine and the LP compressor, increasing efficiency and reducing weight.
What is a geared engine?
When was the geared turbofan engine invented?
2008
And so engine manufacturer Pratt & Whitney laid the foundation for its patented Geared Turbofan™ program, which officially launched in 2008. At roughly the same time as the test phase of the ATFI, the MTU engineers developed a new high-pressure compressor as part of the Engine 3E project.
What does Pratt and Whitney make?
Aircraft engines
Pratt & Whitney
| Pratt & Whitney headquarters in East Hartford, Connecticut | |
|---|---|
| Products | Aircraft engines, gas turbines |
| Revenue | US$16.160 billion (2017) |
| Operating income | US$1.460 billion (2017) |
| Number of employees | 38,737 (2017) |
Where are ge9x engines made?
Take a look at how the compressor’s record-breaking 27:1 pressure ratio and new 3D aerodynamics are qualified on a custom-built rig in Massa, Italy. In more than a century of building engines and powering flight, GE Aviation has never stopped innovating.
Where are P&W engines made?
Pratt & Whitney Canada (PWC or P&WC) is a Canada-based aircraft engine manufacturer. PWC’s headquarters are in Longueuil, Quebec, just outside Montreal. It is a division of the larger US-based Pratt & Whitney (P&W), itself a business unit of Raytheon Technologies Corporation.