SciTransfer
TheMa4HERA · Project

Advanced Cooling Systems for Hybrid Electric Regional and Medium-Range Aircraft

transportTestedTRL 5

Imagine trying to cool a laptop that suddenly becomes as hot as a space heater. Electric planes create way more heat than current jets, and if they can't get rid of it, they can't fly. This work builds a giant 'radiator' system and a digital twin to keep batteries and engines from overheating.

By the numbers
300-1000 kW
Target heat dissipation for power storage and generation
35-50 kW
Current aircraft heat production
100
Maximum passenger capacity for regional aircraft platform
400-1000 Kms
Target aircraft range
2035
Target Entry Into Service (EIS) year
The business problem

What needed solving

Hybrid electric aircraft generate significantly more heat (up to 1,000kW) than current jets (35-50kW). Without new cooling technology, these aircraft cannot meet safety certifications or operate efficiently.

The solution

What was built

A suite of TRL5 thermal management components, including a Cabin Air Compressor (CAC) and a full digital twin for simulation.

Audience

Who needs this

Regional aircraft manufacturersHybrid-electric propulsion system developersAviation battery pack engineersFuel cell system integrators
Business applications

Who can put this to work

Aerospace Manufacturing
enterprise
Target: Aircraft OEM

If you are an aircraft manufacturer dealing with the transition to hybrid power — this project developed thermal management bricks that handle heat dissipation up to 1,000kW. This allows for the design of regional aircraft with 50 to 100 passengers and a range of 400-1000 Kms.

Energy Storage
mid-size
Target: Battery System Integrator

If you are a battery supplier dealing with extreme heat during power generation — this project developed cooling technologies for power storage. It targets the dissipation of 300 to 1,000kW of heat to ensure safety and efficiency in flight.

Green Aviation
SME
Target: Fuel Cell Developer

If you are a fuel cell company dealing with thermal instability in aviation — this project developed specific fuel cell cooling activities. This ensures that hydrogen-based propulsion can operate within safe temperature limits for commercial use.

Frequently asked

Quick answers

What is the cost or price of these systems?

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

Can this be scaled to larger aircraft?

Yes, while focused on regional aircraft (50-100 passengers), the project specifically provides technology bricks for the SMR (Short and Medium Range) segment.

Who owns the IP and how is licensing handled?

Based on available project data, the IP is managed by a consortium of 29 partners, but specific licensing terms are not listed.

When will this be ready for commercial flight?

The project targets an Entry Into Service (EIS) of 2035 for the regional aircraft platform.

How is the system integrated into the aircraft?

Integration is managed via a full digital twin and validated in a full-scale demonstration test facility at Fraunhofer IBP.

Consortium

Who built it

The project is heavily industry-driven with a 79% industry ratio, featuring 23 industrial partners and 5 SMEs across 11 countries. Led by Honeywell International SRO, the group includes almost all key aerospace thermal management players, ensuring that the resulting TRL5 technologies have a direct path to commercial adoption.

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 TRL5 hybrid aircraft cooling bricks.

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