16 Sep 2019, 12:16
The estimates for Chinese military spending are based off Western doubters who expect the Chinese to have off-the-books spending. The official Chinese defense spending as a percent of GDP is about 1.3%. Western analysts believe they're closer to 2%. The US, by comparison, spends 3% of its GDP on military spending, and still has about a 50% larger economy by nominal GDP.
The point being made about developmental orientation is that the Chinese will likely surge when their technology is right. Their technology is not right, so you're not seeing, say, thousands of ZTZ-99s, Type 055s being built like Arleigh Burkes, or 100 operational J-20s.
As for the Chinese 6th gen, their target date is around 2035, with PCA being targeted around 2030 as a contrast.
Regarding regional rivals, Russia is currently aligned with China, and its own Su-57 project has been much delayed. India has no 5th generation aircraft, Vietnam is a rump and apparently has been semi-subservient to China ever since the fall of the Soviet Union ended the Sino-Vietnamese border skirmishes, and Japan has F-35, meaning that dominating Japan militarily is the same problem as offsetting the United States.
The thing I keep pointing out is that the J-20 needs to be able to dominate the F-35 just as much as a MiG-31 should dominate a F-16 BVR or a F-15 should dominate a MiG-29 BVR. It's an expensive heavyweight fighter with all the bells and whistles; the J-20 has EODAS, but the J-31 only has EOTS, for instance. If you compare the J-20 to the F-35, it has stealth disadvantages, radar advantages (and potentially other sensor advantages, although the EOTS housing is disappointing), and high-speed performance advantages (Chinese pilots have leaked that the J-20 has only "good" subsonic maneuverability, but exceptional supersonic maneuverability). The combination of these factors COULD allow it to get 2:1 K/L vs F-35, but only if the platform was properly developed, and the rate of development is too slow.
For instance, the J-20 is already extremely close to a Boeing Sixth-Gen or X-36 aerodynamic formula, which would further reduce drag and increase stealth. Unfortunately, the Chinese can't experiment with this because their WS-15 engines are interminably delayed (last rumor last year was that it wasn't going to see flight testing before 2021, curiously in line with the Pentagon's estimates) and they can't set up the J-20 as a high-powered TVC fighter before ditching tailfins, although the TVC version of the WS-10 is going to allow them to develop TVC FCS early.
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My original projection, ironically, was also for about 600 J-20s in the air. But that was not expecting the rapid subsystems innovations the USAF produced, nor the slow rate of J-20 development. For instance, if China had gotten J-20s combat deployed in the 2016-2017 time period, they would have been categorically superior to the JASDF based on the fact that the JASDF lacked 5th gens. Instead, they never hit combat deployments until this year. Likewise, MSDM, SACM, AIM-260, the missile gap means that the J-20 can't really compete. The closest the Chinese have is the PL-15, and that missile is huge, limiting the J-20 to 4 PL-15s instead of 6 AIM-260 class missiles as the F-35 and F-22 will be able to run.
That makes J-20 spam untenable. You're looking at this from an American perspective, where it's beneficial for the Chinese to waste money on skeet targets that can't fulfill their primary function. From a Chinese perspective, they've more hidden behind their nukes and treasury bonds while focusing on economic and technological development than trying to meet the US force on force in a fight they can't win.
I don't see 600 J-20s as impossible, but the trick is that the J-20s aren't going to be the present J-20 or J-20A versions. They'd need to get the WS-15 TVCs up at the very least, and a J-20C with modified aerodynamics and stealth is going to be needed before they can confidently mass produce them. The earliest this might be viable to do so would be in 2025, and it'd take to 2030 before they could get a full complement at about 100 a year.
By that time, PCA will likely be ready. The B-21 will be able to function as stealth AWACs with possible EO or photonic radar, defeating most stealth, and with possible drone fighters escorting it. The Chinese are talking about modifying their potential H-20 to fit the B-21 role, but it's not purebred for that, given that the program was started more for regional or intercontinental attack utilizing long-range cruise missiles.
The operant feature, incidentally, is speed. If we were talking about this in 2017, it would have made sense for the Chinese to attempt to surge and try to defeat the F-35s in sufficient numbers. But now it's 2019 and American innovations mean that once again there's an unbreakable tech gap that can't be defeated simply by numbers. The rate is innovation, to an extent, is astounding; the US missile upgrades and B-21 are a far cry from the interminably delayed F-22 and F-35 programs. It probably has to do with the fact that the US has not focused on its military programs since the end of the Cold War, as well as the superior American R&D complexes.
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One thing I do want to point out is that it's possible that the J-31s will end up getting replaced by the Su-57s instead. Trick is, the Su-57s are now incredibly cheap; the Russians claim to have gotten the cost down to 35 million, helped in part by the decline of the ruble. It's a full-featured heavyweight stealth fighter that sacrifices stealth for maneuverability and cost, and it's likely a better "lo" complement to the J-20 than the J-31. More importantly, the Chinese can keep Russian aerospace in play when the Russians have a far better R&D complex; the Chinese may have the money, but their products are rather cash-inefficient and it's going to take time for the Chinese to develop their R&D complex.
Last edited by
inst on 16 Sep 2019, 13:07, edited 1 time in total.