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JAXA Aviation helps to create a safer and more prosperous society with aeronautics-related research and development activities.


<In Pictures>

Engine anti-icing/de-icing technology

Accretion of ice on jet engine fans impacts aircraft operation by decreasing fan efficiency and thrust, and causing damage to the inside of engines from detached ice. The unit shown on the right of this picture is an icing wind tunnel that can create airflows at temperatures between −5°C and −25°C. At the center of the picture is a specimen. Ice accretion can be seen on the right side of the specimen, which has just been subjected to a cold flow containing water droplets. The properties of ice that accretes on the surface vary according to the size of droplets in the airflow and air temperature. While the ice shown here is hard and transparent, it may also be soft and opaque, or a combination of these two types. JAXA uses these test results in its research on engine anti-icing/deicing technology.

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