Have a look at the Airbus' retro-looking open fan engine design which could cut CO2 emissions....



We all know that aviation is one of the most CO2 emitting industries, and there are various efforts to reduce the industry’s emissions or reduce them to zero.

As the latest part of these efforts, Airbus and CFM International are collaborating to flight test CFM’s novel open fan engine architecture, which looks like an old propeller engine but is able to increase the engine capacity while reducing CO2 emissions.

CFM International’s efforts to develop an open-fan turbine engine concept are a part of its Revolutionary Innovation for Sustainable Engine (RISE) program.

Following extensive ground testing, a double-decker Airbus A380, the world’s largest commercial airliner, will be used to mature and accelerate the development of open fan engines.

Flight tests for the validation will be performed in the second half of this decade from the Airbus Flight Test facility in Toulouse, France. The second phase of the flight testings is expected to occur at GE Aviation’s Flight Test Operations Center in Victorville, California, in the second half of the decade.

The flight test program will be actualized to achieve several objectives that could contribute to future engine and aircraft efficiency improvements, including enhanced understanding of engine/wing integration and aerodynamic performance (thrust, drag, loads) as well as propulsive system efficiency gains; validating performance benefits, including better fuel efficiency that would provide a 20 percent reduction in CO2 emissions compared to today’s most efficient engines; evaluating acoustic models; and ensuring compatibility with 100 percent Sustainable Aviation Fuels (SAF).

This collaboration with CFM complements the work being carried out to evaluate concepts and mature technologies for Airbus’ zero-emission ambition by 2035.

“New propulsion technologies will play an important role in achieving aviation’s net-zero objectives, along with new aircraft designs and sustainable energy sources,” said Sabine Klauke, Airbus Chief Technical Officer. “By evaluating, maturing, and validating open fan engine architecture using a dedicated flight test demonstrator, we are collaboratively making yet another significant contribution to the advancement of technology bricks that will enable us to reach our industry-wide decarbonization targets.”

Airbus and CFM, along with parent companies GE and Safran, share the ambition of fulfilling the promise they made in signing the Air Transport Action Group goal in October 2021 to achieve aviation industry net-zero carbon emissions by 2050 by developing and testing the technology necessary to make zero-emissions aircraft a reality within the ambitious timeline defined.

“The CFM RISE Program is all about pushing the technology envelope, redefining the art of the possible, and helping to achieve more sustainable long-term growth for our industry,” said Gaël Méheust, President and CEO of CFM International. “CFM, its parent companies, and Airbus all share the same vision and commitment for the future; the open fan flight test demonstration program is an exciting next step toward achieving the industry’s net-zero goals.”

It is nice to see that one of the most CO2-emitting industries in the world is trying hard for the world.



Credit: interestingengineering.com

YouTube: CFM Rise program - Open fan,The most ambitious architecture | Safran - YouTube

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