Beijing has released footage of flight tests of an upgraded J-20A stealth fighter, with signs that the jets have been equipped with long-awaited high-thrust WS-15 engines and better avionics. Chengdu Aircraft Corporation – the Aviation Industry Corporation of China subsidiary manufacturer of the J-20 stealth fighter – released new imagery and flight footage of its latest test aircraft on Saturday. According to a social media post by state news agency Xinhua on Wednesday, these aircraft are new...