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Text: Thomas Masuch
The RISE program is a collaboration between Safran Aircraft Engines and GE Aerospace through their joint venture CFM International. RISE, which stands for Revolutionary Innovation for Sustainable Engines, was launched in 2021 with the goal of reducing fuel consumption by a further 20 percent compared to the most efficient engines currently available, while also making them cleaner and quieter. The revolutionary aspect of the RISE program is the ‘open fan’ concept, in which the large fan rotor blades operate without external fairings (nozzles/nacelles) to reduce weight and drag.
The aim is also to achieve a high bypass ratio, which significantly increases thrust efficiency and fuel efficiency. To this end, the concept also includes a smaller, more thermally efficient high-pressure core with new materials and improved cooling (see also the article on Lithoz and Safran). According to Nikon, the component was printed as a step toward the final design for the RISE demonstration engine planned for 2030. Series production is scheduled to begin in 2035 and will also be carried out using 3D printing.
