Wild-Looking ‘Open Rotor’ Engine Could Cut Airliner Emissions by a Massive 20 Percent | WHAT REALLY HAPPENED

Wild-Looking ‘Open Rotor’ Engine Could Cut Airliner Emissions by a Massive 20 Percent

Along with boosting fuel efficiency, it's slated to maintain existing performance and noise levels.
Airlines are a major source of airborne pollution, and making them more sustainable is a goal of governments and the aviation industry alike. There have been several proposed solutions to this problem by private companies and elected officials, but a new sort of engine could reduce emissions and fuel consumption without having to sacrifice the existing convenience of air travel.

Under development by the Franco-American aerospace company CFM, it's called an "Open Rotor" engine, and its wild-looking design is the result of it being an evolution of existing high-bypass turbofan engines. Without a cowling, the large rotor blades are exposed to the open air along with a series of adjustable stators to smooth the airflow. Thanks to its non-ducted design, the fan blades can have a larger surface area and be more efficient. These open rotor engines, also known as "prop fans," have the potential to make air travel much cleaner and more economical.

One-half of CFM—French engine builder Safran—has been experimenting with the idea since 2017. In fact, it built a functional prototype back then to test the idea. The twin-prop, contra-rotating design was claimed to produce a double-digit percentage reduction in fuel consumption and emissions while maintaining similar thrust levels. The noise back then was cited as "comparable" to existing turbofans, which may have indicated there were some hurdles to overcome with the design. This new motor is different, though.

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