ロッキード・マーティン社の上級エンジニアからもこき下ろされたJ-20。 http://www.businessinsider.com/the-real-purpose-behind-chinas-mysterious-j-20-combat-jet-2017-1 A senior scientist at Lockheed Martin told Business Insider that the Chinese made serious missteps when trying to integrate stealth into the J-20. "It's apparent from looking at many pictures of the aircraft that the designers don't fully understand all the concepts of LO design," the scientist said, referring to low-observable, or stealth, design.
Partnering with Britain may not help so much: the Royal Navy fears that the air defense missiles on its new aircraft carriers are too slow to stop Russian hypersonic anti-ship missiles. 中国って念頭に置かれてたっけ?