SciTransfer
OFELIA · Project

Next-Generation Open Fan Engines for Low-Emission Short and Medium Range Aircraft

transportTestedTRL 5

Imagine a jet engine where the outer casing is removed, leaving the fan blades open to the air. This design lets the engine move more air more efficiently, similar to how a high-tech propeller works but with the power of a jet. It's designed to make planes burn significantly less fuel and pollute much less during short flights.

By the numbers
20%
CO2 emissions reduction versus 2020
2035
Target Entry into Service (EIS) year
2050
Target year for carbon neutrality
The business problem

What needed solving

Short- and medium-range aircraft struggle to reduce CO2 emissions significantly without sacrificing performance. Current engine designs are reaching their efficiency limits, making it hard to hit 2050 carbon neutrality goals.

The solution

What was built

A TRL5 Open Fan engine architecture including a full-scale ground test campaign and a flightworthy propulsive system definition.

Audience

Who needs this

Aircraft manufacturers (Airframers)Jet engine developersCommercial airline fleet managersAviation certification authorities
Business applications

Who can put this to work

Aerospace Manufacturing
enterprise
Target: Aircraft Original Equipment Manufacturer (OEM)

If you are an airframer dealing with strict carbon neutrality goals for 2050 — this project developed a TRL5 Open Fan architecture that allows for a 20% emissions reduction versus 2020 levels. This enables the design of next-generation short-to-medium range aircraft.

Aviation Propulsion
enterprise
Target: Jet Engine Manufacturer

If you are an engine builder dealing with the need for a credible path to Entry into Service by 2035 — this project developed the RISE Open Fan technology. It provides a validated path to achieve 20% CO2 reduction through innovative turbomachinery.

Commercial Aviation
enterprise
Target: Airline Operator

If you are a fleet operator dealing with rising fuel costs and emissions taxes — this project developed a propulsion system that targets a 20% reduction in emissions. This leads to lower operational costs for short- and medium-range routes.

Frequently asked

Quick answers

What is the expected cost or price of this technology?

Based on available project data, specific pricing or unit costs for the Open Fan engine are not provided; the focus is on the EUR 100,000,000 EU contribution for development.

Is this technology ready for industrial scale?

The project aims to reach TRL5, which involves a full-scale ground test campaign. It is not yet at industrial scale but is preparing the path for an Entry into Service by 2035.

How is the IP and licensing handled?

Based on available project data, specific licensing terms are not mentioned, but the project involves a consortium of 29 partners including 17 industry players.

What is the timeline for commercial use?

The project targets a credible path toward an Entry into Service (EIS) by 2035.

How will this be integrated into existing planes?

The project focuses on optimizing engine installation with airframers and addressing certification with airworthiness authorities to ensure the increased fan diameter fits conventional aircraft configurations.

Consortium

Who built it

The project is heavily industry-driven, with 17 industrial partners (59% of the consortium) and 4 SMEs, led by Safran Aircraft Engines. With 29 partners across 11 countries, the group balances high-level manufacturing capacity with 11 academic and research entities, ensuring that the TRL5 demonstration is backed by both theoretical research and industrial scaling capability.

How to reach the team

Contact Safran Aircraft Engines regarding the RISE Open Fan architecture

Next steps

Talk to the team behind this work.

Contact us to find partners for the Phase 2 in-flight demonstration

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