Chinese Hypersonic Developments (HGVs/HCMs)

daifo said:

https://twitter.com/i/web/status/1895575419367424312

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coolgod said:

I agree with you because I believe SCMP's overall stance is neutral to slightly positive for China, otherwise the Chinese government wouldn't be leaking exclusive info to them all the time. Also SCMP is owned by Jack Ma, who has now been shown publicly beside President Xi.

Besides just doing a hyped popsci summary of Chinese Science/Tech/Military articles to attract views for SCMP, I think they act as the credible 战恐局 for China's military. They also fulfill a weird role of 出口转内销, somehow using "western/HK media" to increase the credibility of certain news which I'm still puzzled by, why can't domestic Chinese private media be the ones to write about these Chinese sci/tech papers with potential military applications? Cause they don't want to jeopardize the credibility of domestic Chinese media? Or is it because western media, think tanks, government and military orgs wouldn't be able to cite Chinese domestic media even though they know the information is true?

I'm especially curious about @Blitzo 's view on this since he seems very opinionated about these kind of SCMP articles, and also since he is a contributor to military articles in other media organizations. I suspect his distaste for these kind of articles comes from his preference to improve the quality of the PLA watching community, rather than his distaste for what the message behind these articles are trying to send. He would have a different perspective at the narratives/motivation behind PLA watching articles in the western media landscape compared to the rest of us.

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Blitzo said:

My distaste is simple -- people like Stephen Chen deliberately and knowingly scour places for scientific articles which are then twisted and exaggerated to make progress seem like they are more advanced/further along/ready than they actually are, and then laundered with clickbait titles.
Those articles in turn then get cited by silly places like Eurasiantimes and National Interest or even sometimes slightly less BS websites, and that in turn creates more work for us to have to refute them.

It's just a waste of everyone's time, all for the purpose of generating more traffic.


My distaste does not occur exclusively from a PLA watching perspective, but rather from a human decency and honesty perspective.


There is nothing in particular about Stephen Chen or SCMP that makes this distasteful niche unique or somehow unable to be filled by any other individual or outlet. It's just that it so happens that it is that individual and SCMP which had happened to have occupied it at the moment.

There is no 4D chess of trying to honeypot anyone or carry out any sort of psychological operation that underlies it -- it's all just about clicks and traffic, framed in a way that looks credible to your average passerby.

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daifo said:

https://twitter.com/i/web/status/1895575419367424312

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coolgod said:

Besides just doing a hyped popsci summary of Chinese Science/Tech/Military articles to attract views for SCMP, I think they act as the credible 战恐局 for China's military.

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BasilicaLew said:

You could with a big math brain roughly calculate how fast it's going to checking how far across the horizon in the video it passes. I won't do it but, you could!

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Iron Man said:

Doesn't Minnie Chan work for SCMP? Come on now....

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Wrought said:

She hasn't written any articles for them in

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, so probably not anymore.

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iewgnem said:

With just one video you can't calculate its speed because you're missing distance to camera
But staging event can be used as a marker so if you can geo reference two camera's ground position then you can fix distance and calculate speed.

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Abstract: Wide-speed-range hypersonic vehicle, as a new strategic high ground in the aerospace field, face the challenge of balancing subsonic aerodynamic performance with transonic and supersonic as well as hypersonic characteristics due to the maximization of their flight speed and altitude range. To alleviate the high and low speed aerodynamic design conflict, this paper combines a global optimization approach based on surrogate models with a local optimization approach based on adjoint gradients to perform a multi-objective stepwise optimization of the layout parameters and airfoil shapes of the wide-speed-range configuration, spanning from the global to the local scale. The results indicate that under the constraints on subsonic lift coefficient and hypersonic drag coefficient, the layout parameter optimization method based on surrogate models can enhance the subsonic lift-to-drag ratio by 9.5%, while maintaining hypersonic aerodynamic performance. Furthermore, by selecting the configuration on the Pareto front of layout parameter optimization results with the optimal subsonic aerodynamic characteristics, a gradient optimization of the wing profile is performed using an adjoint gradient-based method. The optimization results demonstrate that the gradient optimization effectively enhances the drag characteristics during subsonic and hypersonic cruising states, leading to the geometric optimization of the airfoil as a dual-S shape that balances subsonic and hypersonic aerodynamic characteristics. Through the aforementioned optimization from layout parameters to profile parameters, the subsonic lift-to-drag ratio of the waverider-wing configuration increased by 12.4% compared to the original configuration, while the hypersonic lift-to-drag ratio improved by 6.2% compared to the original configuration.

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