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RRの将来防衛プログラムチーフエンジニアがEJ200だと明言してる
Conrad Banks, R-R’s chief engineer defence future programmes, describes the test activity as having been “fully successful”, by proving the ability of the engine to perform without experiencing air distortion or resonance issues.
“The important thing here is to make the EJ200 think that it’s sitting in a Typhoon,” he says of the demonstrator’s “sixth-generation installation”, as this will enable the powerplant to be operated using established flight clearance protocols.

https://www.flightglobal.com/defence/uk-reveals-rapid-progress-on-sixth-generation-fighter-demonstrator-effort/153690.article