Su-47 Berkut: Why This Unique Forward-Swept Wing Design Not Be Further Developed

The Sukhoi Su-47 Berkut, also designated S-32 and S-37 during initial development, was an experimental supersonic jet fighter developed by Sukhoi Aviation Corporation. -------------------------------------- In case you want to DONATE: https://www.paypal.me/dungtransport Even the smallest donation is a great help to me. Thank you very much. -------------------------------------- If you have any questions, please leave a message below

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