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Report

Teaser, summary, work performed and final results

Periodic Reporting for period 1 - PALACE (Pump Architecture Linked to Aircraft Cooling Expectations)

Teaser

Summary

The PALACE project aims at designing and manufacturing a high performing oil cooling system for high power machines.
With regards to new high power VFSG developments, innovative pump prototype is envisaged to allow:
- Enhanced pump integration and scale reduction for easier installation inside the machine, lower impact on overall machine envelope, and on design complexity,
- Reduction of maximum number of moving parts for higher durability and availability,
- Optimization of pump performances to reduce environmental impact,
- Availability for the aircraft manufacturers: free of ITAR sourcing.

Some TRL5 prototypes will be expected at the end of the project.
Derisking activities will be conducted during the whole project to adress cavitation issue, lubrication issue, pressure pulsation issue over the total range of speed.
The range of speed up to 30 000 rpm is the greatest challenge of the project.

Why is it important? Because a compact, robust, efficient pump integration into the future high power VFSG system will reduce environmental impacts (reduction of mass of the pump but also of the VFSG system, extended performances over the range of speed)

Work performed

The first part of PALACE project Innovation includes State of the art activities (technologies of pump linked to the topic, main involved industrials, scientific publications, which actors file patents), Innovation activities to define one or several architectures that could answer the topic.
In parallel, some additional activities are conducted to prepare the second part of project i.e. designing the new pump. For example, some tests are performed on previous pump design to describe the limits of performances, and to extend the known domain. A set up of an 1D numerical model of the pump is also launched.

The second part (Preliminary Design) includes test bench design, pump design for demonstratorsâ€™ samples.
CETIM supports SERV into the design by managing the calculations (mechanical, thermal, hydraulic, materials)and the peer reviews. CETIM introduces some methodologies (Eco-design approach, DFMA) and evaluate the benefits of some technologies (Additive Manufacturing)

The consortium is eager to carry out the demonstrators tests end of 2019.

Final results

The State of the Art activities at the beginning of project highlighted and confirmed the interest to develp a new pump technolgy linked to the topic. No scientific publications deal with an oÃ¯l pump that rotÃ¢tes to such an high speed (30000 rpm) in Aircraft conditions.
Depending on the performances results, some IP aspects will be granted; to be updated after CDR milestone.
TRL5 prototypes are expected at the end of the PALACE Project. The pump would be able to perform more than 23L/min under the whole range of speed up to 30000 rpm, regardless of the temperature and the altitude pressure.

Neither socio-economic nor societal impacts are expected in the project.