Aerodynamic upgrade of Surface Air Cooled Oil Cooler

Horizon 2020 / Clean Sky JU Call: H2020-CS2-CFP08-2018-01

The absolute necessity to reduce pollutant emissions as well as the future limited availability of fossil fuels will lead to a continuous increase of fuel costs in the coming years. As, today, the fuel costs contribute to about 40 % of the ownership cost of an aero-engine, the airline companies request drastic reductions of fuel burn (up to 30 %) for the next generation of engines, as an example, a decrease of 1 % in Specific Fuel Consumption (SFC) corresponds to a saving of about 50,000 € per engine. A main objective is therefore the reduction of the SFC to reduce fuel costs on one side and the ecological impact of its combustion on the other side.


Developing a predictive methodology on the SACOC (Surface Air Cooled Oil Cooler) air heat exchanger and its impact on the aerodynamics (including acoustics) of the secondary flow.

Evaluating new concepts without fins, paying special attention to the trade-off between thermal benefits and head losses in the secondary flow introduced by the new concepts.