H-20 bomber (with H-X, JH-XX)

Inst

Captain
Here's something cool:

80253_b21renderingatedwardsafbcusaf_668934_crop.jpg


This is the new B-21 bomber. What the Western media is going gaga over is the new window arrangement. But if we consider the H-20 leaks, what's more interesting is the similarity in the design between the H-20 and the B-21, and how they differ from the B-2. With the B-2, you had a single weapons bay that was longitudinal beneath the flying wing. With the B-21, however, it resembles the H-20 in that it more resembles a lifting body fuselage with wings affixed onto it, which should increase the cargo volume of both the B-21 and H-20. Where the H-20 differs, of course, is that the wings are not affixed at the same angle as the main body, so that you have a two-section stealth planform, sacrificing stealth for greater lift on the wings and a potentially longer main body.

Another interesting aspect is that the H-20 might not sacrifice low-band stealth at all compared to the B-21, unless we're concerned about corner reflections. The H-20 is in the 45-60 meters range, and it roughly cranks its wing at 50% of the aircraft length. The B-21, incidentally, is estimated at a maximum of 30 meters long, or in other words, the H-20's smallest features, provided the tail folds properly into the body, is almost equal to the size of the entire B-21.

In other words, we could potentially consider the H-20 more advanced than the B-21. The half-wavelength resonance frequency for both the B-21 and H-20 is likely to be in the low part of the HF sector (5 mhz). It's also theoretically possible that neither the B-21 nor the H-20 can be picked up by radars at practical distances, which makes the H-20 more considerable as a nuclear deterrent. But the H-20, unlike the B-21, can sacrifice trivial parts of its low-frequency stealth compared to the B-21 for improvements in aerodynamic and layout efficiencies.

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Also, as a side note, the H-20 really changes the strategic balance if China builds even 50 of these things. The current H-6 fleet has a theoretical bomb load of 33% of the American strategic bombing fleet. 50 H-20s at 30k + tons of payload gives China about 2/3rds of the US bomb load, and unlike American bombers, Chinese bombers are centralized to the East Asia region. Or, in other words, the H-20 fleet should be roughly as threatening as the American strategic bomber fleet in the region. Scaling up to 100 bombers, the H-20s provide a stealth punch that's more threatening than the American presence in terms of what sustained bomber assaults can do, and given the range on H-20s, they can credibly bomb the crap out of any American ally in the region.
 
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anzha

Senior Member
Registered Member
Another interesting aspect is that the H-20 might not sacrifice low-band stealth at all compared to the B-21, unless we're concerned about corner reflections. The H-20 is in the 45-60 meters range, and it roughly cranks its wing at 50% of the aircraft length. The B-21, incidentally, is estimated at a maximum of 30 meters long, or in other words, the H-20's smallest features, provided the tail folds properly into the body, is almost equal to the size of the entire B-21.

Do we have any real sources on the design of the H-20 yet though? Other than the teases through commercials and whatnot, I had not heard anything definitive. I am more than willing to be wrong, but...
 

e46m3

New Member
Registered Member
I'm happy to be proven wrong but I don't expect the H-20 to have intergrated exhausts like the B-2, but something similar to the Okhotnik.
 

Xizor

Captain
Registered Member
I'm happy to be proven wrong but I don't expect the H-20 to have intergrated exhausts like the B-2, but something similar to the Okhotnik.
Unlikely. Integrated exhausts will be there.
Here's something cool:

80253_b21renderingatedwardsafbcusaf_668934_crop.jpg

Both the H-20 and B-21 will have the capability to fire standoff long range cruise missiles.

The H-20 will have its aerodynamics optimized for low altitude flight ( sea level flights) and that could see it get the jagged aft control surfaces similar to B-2.

My only gripe with the H-20 is its size. I'd like it to be around the same size as B-21 but I've read that it'll be the size of B-2.

Smaller, more numerous platforms are better, imo.
 

plawolf

Lieutenant General
Unlikely. Integrated exhausts will be there.


Both the H-20 and B-21 will have the capability to fire standoff long range cruise missiles.

The H-20 will have its aerodynamics optimized for low altitude flight ( sea level flights) and that could see it get the jagged aft control surfaces similar to B-2.

My only gripe with the H-20 is its size. I'd like it to be around the same size as B-21 but I've read that it'll be the size of B-2.

Smaller, more numerous platforms are better, imo.
Better at what? Tactical conventional strike? Undoubtedly. But for true strategic nuclear deterrence, the H20 would need the legs to reach CONUS from deep within Chinese territory, which, I think is the primary reason for its large size.

Also due to that reason, it’s bomb load may not be all that impressive as the design would priorities range over bombs.
 

Richard Santos

Captain
Registered Member
Modern heavy bombers tend to prefer a larger and heavier design that can reach a specified range comfortably without undue structural sacrifice, to a smaller and lighter design which save every possible weight to reach that same range.

So a bomber designed for long range with a modest payload can be default trade fuel for bombs and flaying shorter range missions with a much heavier bomb load.

However, the B-1’s theoretical 60 tons of bombs is not likely. B-1’s long fuselage allow her to actually incorporate much larger bomb bays than is likely on a flaying wing of similar weight. Even so B-1 can only carry 60 tons if half of it attached to hard points on the outside.
 

Xizor

Captain
Registered Member
Better at what? Tactical conventional strike? Undoubtedly. But for true strategic nuclear deterrence, the H20 would need the legs to reach CONUS from deep within Chinese territory, which, I think is the primary reason for its large size.

Also due to that reason, it’s bomb load may not be all that impressive as the design would priorities range over bombs.
But the long range cruise missiles can do the job of taking the baton to the finish line.

I don't think H-20 will be survivable against a US A2/AD bubble. What I'm envisioning is a bomber that goes as far as the Mid pacific to launch a 'stealthy' long range cruise missile that'll make a dash to the coastal US.
 

Inst

Captain
Better at what? Tactical conventional strike? Undoubtedly. But for true strategic nuclear deterrence, the H20 would need the legs to reach CONUS from deep within Chinese territory, which, I think is the primary reason for its large size.

Also due to that reason, it’s bomb load may not be all that impressive as the design would priorities range over bombs.
The lifting-body / BWB design implies a large payload due to a very large main body.

With a large payload, you can actually jam more fuel into the aircraft through bay tanks (as with the B-2), so you can have a comparably weak payload for ultra-long distance missions compared to being a purely range-optimized design.

Moreover, with China being encircled by the Quad right now, a short-range high-payload bomber is extremely useful in that it reduces the cost of offsetting a potential two-front war. India joining the Quad makes it an important target for China to "break" the Quad by neutralizing the InAF and thus returning the China strategic theatre back to a one-front engagement.

For that matter, a low-cost super-stealth super-lightweight fighter actually becomes useful because it can be proffered to Pakistan and Russia in bulk and as a F-35 killer.
 

BagPiper

New Member
Registered Member
Too bad. Either this project is in even higher level of secrecy protection than J20 or it simply doesn't exist yet. Although J20 was highly classified before its maiden flight, we were still able to see actual leaked wind tunnel prototypes. But so far we've only seen pictures of UAV's and fan made CG's.
 

LawLeadsToPeace

Senior Member
Staff member
Moderator - World Affairs
Registered Member
Too bad. Either this project is in even higher level of secrecy protection than J20 or it simply doesn't exist yet. Although J20 was highly classified before its maiden flight, we were still able to see actual leaked wind tunnel prototypes. But so far we've only seen pictures of UAV's and fan made CG's.
That assessment is based on the assumption that Chinese OPSEC is still the same as before. However it is clear as day that the Chinese are doing everything they can to keep a lid on these leaks. As for the existence of a long strategic bomber project, that one has been confirmed by a PLAAF officer several years ago.

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