The proposed project was part of the Cleansky Eco-Design activities for the all (or more) electric aircrafts. The main targets of the call were related to improved aircraft weight, improved electronic equipment life cycles & reduced maintenance thanks to the use of highly efficient passive (“green”) thermal control systems (as already used on satellite systems).

Technical objectives:

The EHP proposal was part of the ECO-Design ITD and addressed the development, and qualification aspects of highly efficient two-phase cooling devices such as heat pipes and loop heat pipes to be used on board of aeronautical aircrafts.

The main objectives were to:

• Qualify two-phase heat transfer devices in accordance with specific aeronautical requirements such as:

        - High acceleration loads

        - Long duration vibration stresses

• Reduce global aircraft weight at equipment and/or system level => reduce aircraft consumption and increase operating range
• Lower impact on environment through the use of passive and maintenance free thermal equipment
• Increase reliability of controlled equipment (power electronics) => decrease repair and maintenance aspects

The Ammonia HP and LHP products were baselined (with a TRL 9) on all Space satellites or payloads thanks to the reliable capability provided by these “isothermal” lightweight thermal management devices.

Non-space applications were also more and more considered for these two-phases devices to be used on high power electronic (railway applications) or primary flight control actuators.

The AeroL-HP products were developed up to CDR level with qualification of the two-phase hardware. From a technical side, the proposed thermal link had to provide a reliable and competitive (generic, modular and low cost) product (Rejected power/mass). The thermal link was a scalable system able to address payload dissipations from 30W (TBC) up to 900W (or higher).