The modified Tupolev Tu-144LL supersonic flying laboratory during a test flight from the Zhukovsky Airfield near Moscow, Russia. The "LL" stands for Letayuschaya Laboratoriya, which means Flying Laboratory.
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NASA
Description
The modified Tupolev Tu-144LL supersonic flying laboratory during a test flight from the Zhukovsky Airfield near Moscow, Russia. The "LL" stands for Letayuschaya Laboratoriya, which means Flying Laboratory.