It is the sole engine supplier for the Boeing 737 MAX and competes with Raytheon Technologies (RTX.N) unit Pratt & Whitney for airline engine selections on the Airbus A320neo. The system will contain hybrid-electric propulsion and be capable of running on 100% sustainable fuel or hydrogen, an energy source favoured by Airbus (AIR.PA) for future concepts.ĬFM is the world's largest jet engine maker by the number of units sold. The 'RISE' engine, positioned as a possible successor to the 'LEAP' model used on the Boeing 737 MAX and some Airbus A320neo, will feature a design with visible fan blades known as open-rotor and could enter service by the mid-2030s. PARIS, June 14 (Reuters) - General Electric (GE.N) and France's Safran (SAF.PA) has unveiled plans to test-build an open-bladed jet engine able to reduce fuel use and emissions by 20% as they prolonged their historic CFM International joint venture by a decade to 2050.

Industry titan was born out of a Nixon-Pompidou summit.French-American engine venture extended to 2050.Key step towards next generation of medium-haul jets.CFM to built demonstrator for open-rotor jet engine.Then the engine spins up and starts producing thrust. Then you (sometimes) hear a pop and see smoke come out of the back of the engine. If you have ever been at the airport and watched a big jet engine start up, you know that the blades start rotating slowly. Then fuel flow is increased to spin the engine up to its operating speed. Fuel starts flowing and an igniter similar to a spark plug ignites the fuel. The electric motor spins the main shaft until there is enough air blowing through the compressor and the combustion chamber to light the engine. The motor is bolted to the outside of the engine and uses a shaft and gears to connect to the main shaft. This starting process normally uses an electric motor to spin the main turbine shaft. In both of these types of engines, you need to get the main shaft spinning to start the engine. Another type of gas turbine engine, popular in tanks and helicopters, has one set of vanes for driving the compressor, as well as a separate set of vanes that drive the output shaft. The vanes connect to a shaft that also spins the turbine's compressor.

The hot gases produced by the burning fuel drive vanes in exactly the same way that wind turns a windmill. One type discussed in How turbine engines work includes a normal 'jet' engine on an airplane. Gas turbine engines come in many shapes and sizes.

Model airplane jet engine