SciTransfer
NEWBORN · Project

High-Power Hydrogen Fuel Cell Propulsion Systems for Regional and Commuter Aircraft

transportPilotedTRL 4

Imagine replacing a plane's thirsty jet engine with a giant, clean battery that runs on liquid hydrogen. This project builds a powerful electric motor system that turns hydrogen into thrust without emitting CO2. It's like creating a high-performance electric powertrain that is light enough to fly and powerful enough to carry 19 passengers.

By the numbers
50%
overall propulsion system efficiency
1.2 kW/kg
power source power density
5 kW/kg
stack power density
35%
gravimetric index for CS-23 aircraft
98%
DC/DC converter efficiency
1 MW
module power capacity
The business problem

What needed solving

Current aircraft propulsion relies on carbon-heavy fuels, and existing electric alternatives lack the power density and efficiency required for regional flights. There is a critical gap in certified, high-power hydrogen systems that can operate at high altitudes.

The solution

What was built

A TRL 4 ground demonstrator of a propulsion system featuring 1MW fuel cell modules, a load-bearing cryogenic tank, and a high-efficiency DC/DC converter system.

Audience

Who needs this

Regional aircraft manufacturersHydrogen aviation infrastructure developersAerospace power electronics suppliersSustainable aviation fuel (SAF) transition consultants
Business applications

Who can put this to work

Regional Aviation
enterprise
Target: Commuter aircraft manufacturer

If you are a plane builder dealing with strict CO2 emission targets — this project developed a 2 MW propulsion system that allows 19-pax aircraft to fly without carbon emissions. It provides a clear path to entry-into-service by 2030.

Aerospace Components
mid-size
Target: Thermal management system provider

If you are a parts supplier dealing with overheating in high-power electronics — this project developed next-generation microtube heat exchangers and a tightly integrated thermal management system. This ensures efficiency even at flight altitudes up to FL450.

Energy Storage
SME
Target: Cryogenic tank manufacturer

If you are a tank maker dealing with fuel boil-off and heavy containers — this project developed a load-bearing cryogenic tank with a 35% gravimetric index for small planes. This technology is scalable up to 50% for larger regional aircraft.

Frequently asked

Quick answers

What is the expected cost or price of the system?

Based on available project data, specific pricing or cost figures are not provided; however, the project aims for lower operational costs through zero CO2 emissions.

Can this technology be scaled for larger aircraft?

Yes, the system uses 1MW modules that can be paralleled to exceed 3 MW. The cryogenic tank is also scalable up to 50% for regional aircraft.

How is the intellectual property or licensing handled?

Based on available project data, there is no specific mention of licensing terms or IP distribution among the 23 partners.

What is the timeline for commercial use?

The project targets entry-into-service for CS-23 aircraft by 2030 and regional aircraft by 2035.

How does this integrate with existing aircraft power systems?

It uses redundant modular bus-tie DC/DC converters with >98% efficiency and a high availability control system architecture to manage power distribution.

Consortium

Who built it

The consortium is heavily industry-driven, with 17 industrial partners (74% of the group) and 3 SMEs, indicating a strong push toward commercialization rather than pure research. Led by Honeywell International SRO and involving 23 partners across 11 countries, the group combines deep aerospace expertise with specialized knowledge in cryogenic storage and power electronics.

How to reach the team

Contact Honeywell International SRO in the Czech Republic

Next steps

Talk to the team behind this work.

Contact us to explore licensing opportunities for high-density PEM fuel cell stacks.

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