So what is exactly Japanese turbofan engine in operational now? do you understand my question? ... google itYup using Nihon Carbon technology since NICALON™ was the first mass produced CMC product successfully developed in 1983.
That is why NGS's senior partner is Nihon Carbon K.K. owning 50% of stock not GE.
CMC are not merely components either, CFM International won't have an engine without the material since they are developing the engine with it.