MiG has not transferred any stealth technology to support China’s J-20 Black Eagle fifth-generation stealth fighter prototype, the company has said.

MiG spokeswoman Yelena Fyodorova said, “We are not delivering any equipment to China, and never have.”

China’s J-20, which is considered to be conceptually similar to the US F-22 Raptor and the Russian T-50 stealth jets, has been claimed to be based on stealth technology from the Russian stealth technology demonstrator aircraft, Mikoyan Article 1.44.

China, which unveiled the J-20 over six months ago, has been working on a future fighter programme since the mid 1990s.

The J-20 is not expected to enter service before 2018-2020, according to RIA Novosti.