@Hendrik_2000,
Firstly please calm down. Secondly, It is my opinion that the poster of the youtube video and Twitter account
彩云香江 is not providing any information more than collecting and repeating what we already know. More than that he
is making basic mistakes and unfounded claims, in other words he should NOT have made his posts that he has no knowledge of.
I took (wasted) some time to watch the video in question, and compared to the paper from the designer of SAC regarding improvement from FC31.
Here is the list of his unfounded claims that are not found in the paper.
1. Where does he get the idea of the main wing being enlarged?
2. Where did he get the idea that the main wing and horizontal stablizer are moved further backward?
3. Where did he get the idea of the reduction of overlapping. FC-31 had almost zero overlap, 350003 still has that tinny overlap, just look at the inner edge of the flap of the main wing.
4. Where did he get the idea that the tail booms are extended?
5. The intake tip was reshaped but not widened.
6. Nowhere in the paper talks about increasing internal fuel by the hump behind the cockpit.
None of the above are mentioned in the paper. He made more mistakes than he was right.
I can sense that he is proud of China's achievement, but that is not an excuse of saying anything unfounded and unprofessional. Worst of all, spreading his posts is messing up this forum.
You have posted his posts in this forum for a long time. Many of us have spent time on reading those posts. I think we have given both him and you enough chance to demonstrate whether his posts are of quality. The result is negative. Can you for the sake of all of us be restraint from sourcing from this person? Please don't make it a personal fight of "I will do what you ask not to" between you and
@by78, it is childish.