Chkalov in 1957 began manufacturing high-altitude aircraft supersonic interceptor "T-3", developed by the Sukhoi Design Bureau (a little later the aircraft will be named "Su-9"). "T-3" was really "piece goods". They took on board 3,250 pounds of fuel. By May, sixtieth in Novosibirsk has created aircraft, who got 3,720 lbs. A half-ton of extra fuel – this is a much greater range, larger line interception and well short of altitude of 20km. It would seem that the history of Soviet rocket troops shot down over Sverdlovsk May 1, 1960 an American spy plane "U-2", piloted by Francis Powers, know everything, but the question, "So who shot down a spy?" remains a "mystery" in the history of the Soviet Union.
Since 1956, high-altitude reconnaissance Powers flew over the Soviet Union, across virtually the entire country at an altitude of 20 thousand meters. He flew over Moscow, Leningrad, over, over top-secret facilities of the country – including Baikonur over, and over the Semipalatinsk nuclear testing ground, and on secret polygons in Sary Shagan,. (According to U.S. intelligence, the Soviet Union has neither the aircraft nor missiles capable of destroying inaccessible Y-2"). Airplane Y-2" had an extremely lightweight airframe with a large wingspan, equipped with special high-altitude turbojet engine. Powers by May 1960 has made 27 flights over the Soviet Union, had flown a total of more than 500 hours. By 1960, flights, "U-2" got Nikita Khrushchev, as the saying goes "to the livers." Khrushchev was proud of the cosmos – the first satellite, flying dogs.