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New tests for Russian stealth fighter

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Published: Aug. 21, 2012 at 8:14 AM

MOSCOW, Aug. 21 (UPI) -- The T-50, Russia's fifth-generation stealth fighter, has completed initial approach trials to a refueling aircraft, manufacturer Sukhoi said Tuesday.

The refueling trials come as Sukhoi's first prototype, T-50-1, undertakes preparations for a flight test program involving flight at super-critical angles of attack and maneuverability, Russian news agency RIA Novosti reported.

In August, T-50-3 will start full tests of the aircraft's new active phased-array radar system and avionics that the company said has shown impressive results in air-to-air and ground-to-air tests.

The T-50 is to enter Russian air force service after 2015.

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