SciTransfer
SWITCH · Project

Hybrid-Electric Engine Technology to Reduce Aircraft Fuel Burn and Emissions

transportPrototypeTRL 5

Imagine a plane engine that works like a hybrid car, using both electricity and fuel to be more efficient. It also captures heat that is usually wasted and uses it to boost power, similar to how some advanced factories recycle energy. This helps planes fly further using less fuel and leave fewer trails in the sky.

By the numbers
20%
improvement in fuel burn and energy consumption
50%
reduction in climate impact of NOx emissions and contrails
100%
compatibility with drop-in Sustainable Aviation Fuel (SAF)
The business problem

What needed solving

Aviation faces immense pressure to reduce CO2, NOx, and contrails to meet climate goals. Current engines lack the efficiency needed to reach the -30% aircraft-level fuel goal without a major architectural shift.

The solution

What was built

A dual-spool hybrid-electric architecture featuring megawatt-class electric motor generators, motor controllers, output filters, and DC panels.

Audience

Who needs this

Aircraft OEMsJet Engine ManufacturersAerospace Tier I SuppliersSustainable Aviation Fuel Producers
Business applications

Who can put this to work

Commercial Aviation
enterprise
Target: Aircraft Manufacturer (OEM)

If you are an aircraft manufacturer dealing with strict carbon mandates — this project developed a dual-spool hybrid-electric architecture that improves fuel burn and energy consumption by 20%. This allows for the creation of more sustainable short- to long-range aircraft.

Aerospace Propulsion
enterprise
Target: Engine Manufacturer

If you are an engine maker dealing with high NOx emissions — this project developed a low-emissions combustor and water-injecting system that achieves a 50% reduction in the climate impact of NOx and contrails.

Airport Operations
enterprise
Target: Airport Authority

If you are an airport operator dealing with local air pollution and noise — this project developed electric taxiing capabilities. This reduces the reliance on main engines during ground movement to improve local air quality.

Frequently asked

Quick answers

What is the cost or price of this technology?

Based on available project data, specific pricing or cost figures for the hardware are not provided.

At what scale is this technology currently available?

The project is maturing the dual-spool hybridized turbofan to TRL 5 through ground demonstration and the waste heat recovery concept to TRL 4.

How is the IP or licensing handled for these components?

Based on available project data, specific licensing terms are not mentioned, but the project involves a global consortium of 22 partners including OEMs and Tier I suppliers.

What is the timeline for market entry?

The technology is expected to form the foundation for market entry by 2035, with flight testing and TRL 6 maturation targeted by 2030.

How does this integrate with existing fuel infrastructures?

The propulsion system is designed to be compatible with 100% drop-in Sustainable Aviation Fuel (SAF) and is suitable for hydrogen-burning powerplants.

Consortium

Who built it

The project is heavily industry-driven, with 18 industrial partners (82% of the 22-member consortium) across 11 countries. The presence of major OEMs like MTU Aero Engines, Pratt & Whitney, and Airbus, alongside Tier I suppliers like Collins Aerospace, indicates a high level of commercial intent and a direct path to integration in actual aircraft.

How to reach the team

Contact MTU AERO ENGINES AG regarding the Dual-spool-hybridized heat recovering Second-Generation Geared Turbofan.

Next steps

Talk to the team behind this work.

Contact us to identify potential licensing opportunities for hybrid-electric propulsion components.

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