zdwChina is mass-producing hypersonic missiles for $99,000
https://kdwalmsley.substack.com/p/on-sale-now-china-is-mass-producing
This is what people should keep in mind when the statistic about US defense spending being higher than the next N nations combined or whatever it is now. If I buy a 30k Prius, and you spend 300k on a different car,
1) that doesn’t mean you can drive 10x as fast and
2) maybe you just bought an overpriced Prius, perhaps a gold plated one
This is a more general problem in politics, where the overall budget being allocated is reported rather than the practical result.
Yeah, you often read stories on the internet about how the SR-71 could easily outrun the MIG-25, proving US technological superiority, but those don't really take into account that there was like a dozen made of the former, with titanium hulls and exotic engineering. While there were more than a thousand made of the cheap, steel hulled MIG 25
The SR-71 wasn't trying to catch the MIG-25, it was trying to get away--and it worked. The U-2 proved vulnerable to filling the sky with cheap stuff--the missiles were ballistic by the time they got up there but when the sky was full of them the U-2 had no path to safety.
The SR-71 couldn't be defeated by the level of missile spam that Russia was capable of, the MIG-25 couldn't get close enough to catch it and they didn't have a missile that could actually work up there. (You need more control surface up there, but down lower more control surface costs you performance.)
(And the MIG-25 was a maintenance nightmare.)