When could the new RISE engines enter service?

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The new RISE engines could enter service by the mid-2030s.

General Electric (GE) and Safran have announced plans to develop a new open-bladed jet engine, codenamed RISE. This innovative engine is designed to achieve a 20 per cent reduction in fuel consumption and emissions. The RISE engine is positioned as a potential successor to the current LEAP model, which powers aircraft such as the Boeing 737 MAX and certain Airbus A320neo variants.
Development of Open-Rotor Technology

The RISE engine will feature an open-rotor design, meaning its fan blades will be externally visible. This configuration aims to improve aerodynamic efficiency by capturing more air, thereby reducing the workload on the fuel-burning core of the engine. While open-rotor concepts have been explored since the 1980s, past development efforts faced challenges related to noise levels. However, Safran has indicated that a prototype tested in 2017 produced noise comparable to the LEAP engine, expressing confidence in meeting stringent noise and safety regulations.
Hybrid-Electric Propulsion Integration

In addition to the open-rotor design, the RISE engine system will incorporate hybrid-electric propulsion capabilities. This integration of electric power alongside traditional jet propulsion is a key element in the pursuit of further fuel efficiency and emission reductions within the aviation industry. The development of this technology is occurring as the sector grapples with increasing environmental pressures and prepares for the next generation of single-aisle aircraft.
Extended Joint Venture and Market Position

The development of the RISE engine is underpinned by the extension of the historic CFM International joint venture between GE and Safran until 2050. CFM International is a significant player in the aerospace market, holding the position of the world's largest jet engine manufacturer by unit sales. The company serves as the exclusive engine supplier for the Boeing 737 MAX and is a competitor to Pratt & Whitney for engine selections on the Airbus A320neo.

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When could the new RISE engines enter service?

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