The rice dumpling wrapping was so much tighter on the original J-31.
key informations:【超燃冲压试验飞行器获国防科学技术进步奖特等奖】陆红,中国航天科工三院301所总师,为国家某“重大专项试验飞行器”研制作出重要贡献。该项目是我国 超燃冲压领域首次飞行,后获国防科学技术进步奖特等奖。据悉,该试验飞行器采用乘波体构型,2011年首飞,2014年试飞圆满完成。
Big news, China's scramjet engine plane project are awarded a major prize.
key informations:
2011, maiden flight
2014, successfully finish flight tests
I'm not sure the testing video is from Chinese one, more confirmation needed.
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See also:
... but so no J-16, no J-10B/C ????