PREVIEW

... >  Su-47 is a fighter that failed verification and was not installed.

  The key issue is the cross-age forward-swept wing design.

   Wing tip flutter and aerodynamic divergence.

   These two problems are problems that cannot be solved by current science and technology.

  Even if the forward-swept wing has various benefits, if it cannot solve these two problems, it is useless.

  Once flying at supersonic speed, it is easy to disintegrate.

   Everyone know ...

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