Dobrovolsky, Georgy Timofeyevich (1928–1971)
Soviet air force lieutenant colonel and cosmonaut, selected in 1963. In
1971, he commanded Soyuz 11 which docked with
Salyut 1. The three-man crew remained in
space for 24 days, performing meteorological and plant-growth experiments.
During reentry of Soyuz 11, a valve in the spacecraft opened accidentally
causing the cabin to depressurize. Dobrovolsky and his crew were found dead
upon recovery of the craft.