China's transport, tanker & heavy lift aircraft - esp. Y-20/YY-20

Gloire_bb said:

I don't know how numbers play, too early to tell(and, again, from my knowledge on how airlifter design goes, we'd better go from payloads/distances rather than throw in arbitrary percentage increases).

For now we can mostly judge the externals, which is (likely) 4 ws-6c, straight wing with huge lifting devices, winglets, straight high tail.
None of that is c-390...

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You meaned WJ-6C?

A pre-research study conducted on the next-generation medium airlifter that would succeed the Y-8 (codenamed Y-8X) from all the way back in 2005. This Y-8X would eventually evolve into the Y-15 that we know of today.

It should be noted that certain performance parameters laid out by this paper may have been modified/adjusted during the development process of the Y-15.

Posted by @OedoSoldier on Weibo.

not created by third party

bsdnf said:

not created by third party
View attachment 166429

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Why is it in English

bsdnf said:

not created by third party
View attachment 166429

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Who is the first party? Doesn't seem like AVIC or PLAAF as it is all in English. Was it your personal creation?

This doodle seems to suggest that indeed Y-15 has an IFR probe on the nose.

ACuriousPLAFan said:

A pre-research study conducted on the next-generation medium airlifter that would succeed the Y-8 (codenamed Y-8X) from all the way back in 2005. This Y-8X would eventually evolve into the Y-15 that we know of today.

It should be noted that certain performance parameters laid out by this paper may have been modified/adjusted during the development process of the Y-15.

Posted by @OedoSoldier on Weibo.

View attachment 166420
View attachment 166421

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oh yes, I still remember reading about Y-8X project and having high hopes of it (this is pre-Y20, so a 30t transport was like the dream for PLA fans) and then getting disappointed by Y-9. But now having looked back, Y-9 was quite important as the special missions platform and they really had no need for Y-8X.

Comparing these numbers to A400M
141t max takeoff, 50t internal fuel and 78.6t empty weight. 4x 8MW turboprop
30t payload with 4500km range
20t payload with 6400km range
3300km at max payload (37t)

Now C130J
34t empty weight and 70t max takeoff, 21t max payload, 4 x 3.45MW turboprop
Range is 3300km at 15.4t

Y-9
4x3.8MW turboprop
if we remember this where fuel was 17.8t, max payload is 23t?

if we assume using 4x5MW turboprop here, then max takeoff for Y-15 would be around 100t.
If we assume latest lightweight technology can keep empty weight to 45t. Then you could have 30t fuel and 30t max payload.

25t payload would allow you to still fly with 30t fuel. That would be pretty good range.

C-390 with 2 turbofan engines.
26t payload, 87t MTOW, 23 to 35t fuel

14t payload 5020km range
23t payload 2720km range
26t payload 2000km range

So, I think if you use a special missions version of Y-15 here, then it can easily have 5000km range with 35t fuel.

Presumably this is AI/PS? Though prototypes flying in primer is very common at least for most (though not all) chinese new aircraft.

mack8 said:

Presumably this is AI/PS? Though prototypes flying in primer is very common at least for most (though not all) chinese new aircraft.

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The link only goes to the profile page. What are you sharing?