Alexei Leonov Survived 12-Minute 1965 Spacewalk as Suit Failure Forced Pressure Drop
Updated
Updated · spacedaily.com · May 28
Alexei Leonov Survived 12-Minute 1965 Spacewalk as Suit Failure Forced Pressure Drop
3 articles · Updated · spacedaily.com · May 28
12 minutes into the first spacewalk on 18 March 1965, Alexei Leonov had to vent his Berkut suit from 0.4 to about 0.27 atmospheres after it ballooned in vacuum and blocked his return to Voskhod 2.
The Soviet live broadcast cut out during the emergency and state radio switched to Mozart’s Requiem; officials later told the public the mission had gone to plan.
Later evidence complicated Leonov’s 2004 memoir, which described a desperate head-first reentry: a 1965 mission report and footage released in 2020 suggest he had planned the pressure drop and likely re-entered feet-first.
Voskhod 2 still suffered more failures after the spacewalk — a guidance malfunction, delayed module separation and a hard off-target landing in Perm Krai — leaving Leonov and Pavel Belyayev stranded in roughly minus 30C forest for two nights.
The near-disasters stayed largely hidden until glasnost and later document releases, underscoring how Soviet secrecy shaped the public record of an early space-race milestone.
Beyond the spacewalk crisis, what other catastrophic failures from the Voskhod 2 mission were covered up by the Soviet Union for decades?
Why did the official report and the cosmonaut's memoir offer conflicting accounts of humanity's first, nearly fatal, spacewalk?
While the US broadcast its spacewalks, the USSR hid disasters. Did this extreme secrecy ultimately hinder the Soviet space program's progress?
The 1965 Voskhod 2 Spacewalk: Engineering Failures, Human Resilience, and the Evolution of EVA Protocols
Overview
This report explores Alexei Leonov’s pioneering spacewalk in 1965, set against the intense Cold War rivalry between the Soviet Union and the United States. Driven by the quest for technological superiority, both nations used German expertise to advance their space programs, with the Soviets leveraging their achievements for propaganda and often hiding failures. Leonov’s historic EVA was a triumph but nearly ended in disaster due to engineering flaws in his spacesuit, revealing critical risks and prompting major improvements in suit design, astronaut training, and mission planning. These lessons continue to shape modern space exploration and future missions.