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SU-47 Firkin is a supersonic testing machine developed by Sukhoi aviation group of the Russian Federation. It was numbered S-32 and S-37 in the design and flight test stage. The biggest feature of this aircraft is the design of forward swept wing, which is very similar to the X-29 test aircraft of American Grumman company.
The 6S double 70mm culvert used for power is quite powerful!
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