The revolution of helicopters engines

Discover the Safran Innovation Grand Prize 2016 that was this year awarded to the Safran Helicopter Engines team for its work on designing a gyratory combustion chamber. With this real disruptive technology the chamber weighs half as much and costs half as much as existing technologies.

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Impressionnant, qu'en est il de cette "invention" en 2020 ?
Je serais ravi d'avoir une réponse.