CORDIS - EU research results

Hybrid Aircraft; academic reSearch on Thermal and Electrical Components and Systems

Project description

Aircraft propulsion takes flight

Addressing the need for more sustainable aviation, the industry is exploring ways to revolutionise aircraft designs and power management. In this context, the EU-funded HASTECS project will tackle the challenge of developing radical aircraft configurations with efficient hybrid electric propulsion. With a consortium of academic researchers, this initiative aims to optimise the complex hybrid power chain, integrating electric and thermal components while considering environmental constraints. By doubling the specific power of electric machines and increasing converter powers, the project envisions a weight reduction of 1.8 tonnes, translating to a significant 3.5 % fuel burn reduction for short-range flights. Complemented by advancements in auxiliary sources and system sizing, total energy consumption could be slashed by over 20 % for regional flights.


The HASTECS project aims at supporting the demonstration of radical aircraft configurations (CS-2/WP1.6) by means of models and tools development that can help the designers in assessing main benefits of architectures and power management of hybrid electric propulsion. The proposed consortium involves all competences to face the huge complexity of this process. All academic researchers will gather their expertise to optimize the overall hybrid power chain, starting with electric and thermal components up to system integration by taking into account main environmental constraints. Assessments will be integrated at the system level and will include design and analysis of main components of the hybrid power chain: electric machines and related cooling, cables, power electronics and related thermal management. This system integration will take into account the main environmental constraints, especially partial discharges due to new high power and ultra-high voltage standards. The HASTECS project proposes to reach aggressive targets with a strong increase of specific powers for the main components; We especially target to double the specific power of electric machines from 5kW/kg for 2025 to 10kW/kg for 2035 while specific powers of converters would evolve from 15kW/kg for 2025 to 25kW/kg for 2035: this expected gap, when installing 4 inverter–motor drives of 1.5MW will lead to a weight reduction of 1.8 tons, which will offer a significant fuel burn reduction estimated at 3.5% for a short range (~300nm) flight. Additional fuel burn reduction will be obtained thanks to several technological steps as on “auxiliary sources” (batteries, fuel cells, etc) and by optimizing the overall system sizing integrating the power management. Recent assessments estimate that the reduction of total energy provided by both Gas Turbines and auxiliaries (batteries of fuel cells) of the most promising electric hybrid architecture may go beyond 20% for a 300nm regional flight!


Net EU contribution
€ 633 500,00
31029 Toulouse Cedex 4

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Occitanie Midi-Pyrénées Haute-Garonne
Activity type
Higher or Secondary Education Establishments
Total cost
€ 748 375,00

Participants (5)