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The payload included life-support equipment and radio and television to relay information on the condition of the pilot. The flight was automated; Gagarin's controls were locked to prevent him from taking control of the ship. The combination to unlock the controls was available in a sealed envelope in case it became necessary to take control in an emergency. After retrofire, the service module remained attached to the Sharik reentry sphere by a wire bundle. The joined craft went through wild gyrations at the beginning of re-entry, before the wires burned through. The Sharik, as it was designed to do, then naturally reached aerodynamic equilibrium with the heat shield positioned correctly.
Gagarin ejected after re-entry and descended under his own parachute, as was planned. However for many years the Soviet Union denied this, because the flight would not have been recognized for various FAI world records unless the pilot had accompanied his craft to a landing. Recovered April 12, 1961 8:05 GMT. Landed Southwest of Engels Smelovka, Saratov. Additional Details: here....
This was the second and final manned suborbital Mercury Redstone flight, and the first flight with trapezoidal window. Further suborbital flights (each astronaut was to make one as a training exercise) were cancelled. An attempt to recover the capsule in very deep water in 1994 not successful. It was finally raised in the summer of 1999.
Despite the conditions, Popovich felt able to go for the full four days scheduled. But before the mission, Popovich had been