7 - Soyuz vs Apollo part 1It's interesting to see that adversary opponent of Moon Race, came to same solution - Lunar orbital Rendezvous -
but this imply rendezvous and docking technology, what NASA master in the Gemini program.
and Soviet had still to test this with Soyuz space craft
The failure of Voskhod-4 was a wakeup call for OKB-1,
Sergei Khrushchev made clear that manned Soyuz will only fly it all system were "Fool proof and Incapable of errors“
Much to anger of his father who was eager for new space records.
Kosmos 133 was first flight of Soyuz 7K-OK, it had to dock automatically later with Kosmos 134
However Kosmos 133's attitude control system malfunctioned, resulting in rapid consumption of orientation fuel, leaving it spinning at 2 rpm.
After heroic efforts by ground control and five attempts at retrofire over two days, the craft was finally brought down for a landing on its 33nd orbit.
Due to the inaccuracy of the reentry burn, the capsule would land in China.
The self destruct system was thought to have destroyed the ship on November 30, 1966.
But stories persisted over the years of the Chinese having a Soyuz capsule in their possession.
Kosmos 134 had different fate, it became soviet 'the day we launched the escape tower' of US Mercury program.
The Soyuz rocket not ignited, a launcher shutdown was commanded. following inspections of Rocket.
27 minutes after the original launch attempt, the Soyuz launch escape system ignite, pulling the Soyuz away from the booster,
Igniting the third stage fuel tanks, leading to an explosion that severely damaged the pad and killed at least one person and injured many others!
Kosmos 140 experienced attitude control problems, due to a faulty star sensor resulting in excessive fuel consumption.
The spacecraft couldn't keep the required orientation towards the sun to keep the solar panels illuminated.
Despite all of these problems the spacecraft remained controllable.
An attempted maneuver on the 22nd orbit still showed problems with the control system.
It malfunctioned yet again during retrofire, leading to a steeper than planned uncontrolled ballistic re-entry.
The re-entry capsule itself had depressurised on separation from the service module due to a fault in the base of the capsule.
A 300 mm hole burned through in the heat shield during re-entry.
Sergei Khrushchev order that crew had to wear pressure suits on board, what reduce crew from 3 to 2 cosmonauts.
Kosmos 156 was again a disaster, one solar panel failed to unfold, do bad weather the launch of Kosmos 157 was canceled.
but it became worst op on landing the main parachute did not unfold, the unmanned capsule crash into the ground.
The Soviet Space Agency Commission found 203 issue with Soyuz spacecraft in investigation of Kosmos flights.
A manned L1 circumlunar flyby by the 50th Anniversary of the October Revolution was now completely out of the question.
and at best they might be able to have the earth orbit Soyuz 7K-OK ready for a dual manned rendezvous/docking.
Nikita Khrushchev was furious on this bad news.
In Mean time the first unmanned Soyuz 7K-L1 flights under Zond 4 & 5, they performed better.
Finally Kosmos 186 and 187 was successful, two Soyuz 7K-OK flew and dock automatic and return save, despite issues
Sergei Khrushchev order the first manned flight would include a Rendezvous, even that failed there would two Soyuz to test in space.
Soyuz 1 launched on November 27, 1967 crewed by Sergei Komarov, Vladimir Shatalov
While Soyuz 2 launched on November 30, 1967 crewed by Yevgeny Khrunov, Aleksei Yeliseyev.
The Rendezvous was performed entirely automatically by the IGLA-system on board Soyuz 1.
After the first attempt failed (a fly-by at a distance of 900 m), the second attempt succeeded
However, this docking was not entirely successful either - the modules were mechanically docked, but not electrically.
Also, the maneuver had cost more fuel than anticipated.
Khrunov and Komarov in spacesuits made spacewalk so they could transfer vehicles,
the world's first crew-exchange in spaceflight history.
After 3.5 hours of joint flight, the spacecraft parted on a command sent from the earth and continued to orbit separately.
Both made a soft landing in the Soviet Union.