Anyone knows why the PLA and CAAC never reverse-engineer Mil Mi-6 ?
Z-XX - new Sino-Russian heavy-lift helicopter
- Thread starter Deino
- Start date
My guess is the Mil Mi-6 was developed too late at a point Sino-Soviet relations had already deteriorated. So the PRC never got the data package or technical assistance to manufacture it. Even if they tried to reverse engineer it the engine would have likely proven to be difficult to reverse engineer. Which is why at the time China tried making their own helicopter design with engines they could already produce i.e. Z-6.
Said to be specifications of an unknown heavy-lift helicopter from an academic paper. Posted by @爱若丰狂SOYO历 on Weibo.
Note (in particular) the main rotor radius, number of main rotor blades and the total mass (of the helicopter itself).
Note (in particular) the main rotor radius, number of main rotor blades and the total mass (of the helicopter itself).
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Looks a lot like CH53K. Can someone please translate the image?
Total mass(kg): 20865.25
Rotor radius(m): 12.04
Rotor RPM(r/min): 178.9
Rotor airfoil profile: SC1095
Rotor chord length(m): 0.7376
Rotor blade amount: 7
Negative rotor twist angle: -10.667
Main rotor rotation direction: Clockwise
Rotor rigidness: 0.1365
Tail rotor blade amount: 4
Tail rotor RPM(r/min): 699
Horizontal stab area(m^2): 5.39
Vertical stab area(m^2): 6.87
Rotor position(m): 8.54, 6.58, 0
Horizontal stab position(m): 22.33, 7.69, -1.22
Vertical stab position(m): 21.87, 6.27, 0
Tail rotor position(m): 23.63, 7.34, 2.04
CoM position(m): 9.01, 4.12, 0
Overall the helicopter does share almost the same rotor diameter, tail rotor blade count and main rotor blade count as the CH-53K but is slightly heavier as King stallion weighs only approx 19000kg.
Edit: I just found that the SC1095 airfoil profile is a Sikorsky airfoil who also happen to be King Stallion's manufacturer, coupled with the fact that this helicopter has the same rotor diameter, same main rotor blade count and same tail rotor blade count it's likely that this data is basically copy pasted from CH-53K.
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what do you mean by copy paste ?? this is AVIC's specifications
I'm pretty sure this is from a paper, SOYO did also say don't be too excited because the specs here may or may not just be the specs for CH-53 series that they borrowed for this study and said the public model for next gen AVIC heavy lift Heli has 5 tail blades instead of 4.
Here is the original post:
Airfoil SC1095 is used by Sikorsky in UH-60 series from a NASA document from 2003 and potentially could be used by other series but I can't find any conclusive sources on this, so I guess take it with a grain of salt. But rotor dimensions are practically the same as CH-53K which is why people were skeptical about this, though its possible in the years since that model was displayed they could've changed up the design or that model is not representative of the actual thing and its a coincident that this new helicopter shares the same rotor dimension as CH-53K which make sense since the new helicopter would be in a similar class designed for a similar role.
You are confusing an old joint venture with Russians aka AHL (over 38T) with this new yet unknown concept (20T)
I can only think of this cg for now from the last year air show, also has 4 tail blades
That's what the paper suggests
But it's not AHL that I can say