Vitaly Zholobov, born June 18, 1937 in the former Soviet Union, went into space once aboard Soyuz 21. He and fellow cosmonaut Boris Volynov spent 49 days aboard Salyut 5. Their original two-month stay was cut short when a noxious odor was detected on board.
Soyuz 24, launched February 7, 1977, was the third and final mission to Salyut 5 space station. Its crew, Commander Viktor Gorbatko and Flight Engineer Yuri Glazkov, reactivated the station after toxic fumes ended the previous mission, Soyuz 21. The Soyuz 23 flight attempted to dock with the station a few months earlier but was unable to complete the mission.
Soyuz 24 successfully docked with Salyut 5 the day after launch, but they did not enter the space station until the next day, probably dealing with the toxic fume problem.
On February 23, they started up Soyuz 24 and deactivated the space station and returned to Earth February 25.
Boris Valentinovich Volynov, born December 18, 1934 in the former Soviet Union, is a veteran of the Voskhod program and went into space twice aboard Soyuz vessels.
He was first assigned as a possible commander for Voskhod 1 in 1964, but he and two others were bumped three days before the scheduled launch. He trained a year training for Voskhod 3, but the flight was cancelled just 10 days before launch and he was transferred to the Soyuz group.
Volynov made it into space January 1965 aboard Soyuz 5 and transferred his two crewmen, Aleksei Yeliseyev and Yevgeny Khrunov to Soyuz 4 via EVA. Volynov returned to Earth as a solo re-entry but things did not go as planned. Soyuz 5's equipment module failed to separate properly and blocked the re-entry heat shielf on the base of the descent module. Volynov lost control of Soyuz 5, which began tumbling. The heat of the re-entry finally burned off the equipment module and the descent module oriented itself properly. The parachutes deployed but only partially and the retro-rockets for a soft landing failed to fire. Volynov hit the ground so hard it broke several of his teeth.
It wasn't over.
Volynov landed far from his planned landing spot. He landed in the Ural Mountains where it was -36 °F and rescuers would not reach him for many hours. He abandoned the capsule and walked several kilometers to find shelter at a local peasant's house.
That didn't discourage him from going into space again. His second and final mission was aboard Soyuz 21 to Salyut 5 in July - August 1976. This landing had problems as well, but nearly as bad as his first. As Volynov tried to undock from the space station, the latch failed to release properly. The spacecraft moved out of range and only the first set of emergency procedures were receieved. It did not work. After another orbit, they received their final emergency procedures and the latches disengaged. Soyuz 21 was now outside the normal recovery window and encoutered strongs winds as it descended. This caused the retrorockets fire unevenly and they had a hard landing about midnight.
Cosmonauts Boris Volynov (commander) and Vitaly Zholobov (flight engineer) blasted off from Baikonur July 6, 1976 in Soyuz 21 on their way to Salyut 5. Their mission was scheduled to last from 54-66 days, but on August 24, it was announced their mission would end in 10 hours.
No official explanation has ever been found as to why the crew were recalled to Earth so soon. The most likely scenario is an "acrid" odor detected on the space station. Another explanation is Zholobov was in failing health (probably due to nitric acid leaking from the fuel tanks; or the crew did not follow their exercise program and suffered from lack of sleep.
They boarded Soyuz 21 and attempted to detach from Salyut 4, but the mechanism failed to operate properly. They received the first set of emergency instructions right before they lost contact with Russia, due to them moving behind the Earth. Once they regained their signal, they received the emergency procedures and they were able to free themselves from Salyut 5.
