Engineering:Soyuz 3

From HandWiki
Short description: Crewed flight of the Soyuz programme
Soyuz 3
The Soviet Union 1968 CPA 3699 stamp (Pilot-Cosmonaut of the USSR Georgy Beregovoy and Carrier Rocket Start).jpg
Soyuz 3 commemorative postage stamp, USSR, 1968
Mission typeTest flight
OperatorSoviet space program
COSPAR ID1968-094A
SATCAT no.03516
Mission duration3 days 22 hours 50 minutes 45 seconds
Orbits completed81
Spacecraft properties
SpacecraftSoyuz 7K-OK No.10
Spacecraft typeSoyuz 7K-OK (active)
ManufacturerExperimental Design Bureau (OKB-1)
Launch mass6575 kg
Landing mass2800 kg
Dimensions7.13 m long
2.72 m wide
Crew
Crew size1
MembersGeorgy Beregovoy
CallsignАргон (Argon - "Argon")
Start of mission
Launch date26 October 1968, 08:34:18 GMT
RocketSoyuz
Launch siteBaikonur, Site 31/6[1]
End of mission
Landing date30 October 1968, 07:25:03 GMT
Landing siteKaraganda, Kazakhstan
Orbital parameters
Reference systemGeocentric orbit[2]
RegimeLow Earth orbit
Perigee altitude196.0 km
Apogee altitude241.0 km
Inclination51.66°
Period88.87 minutes
Soyuz 3 patch.png
Soyuz 3 mission patch
← Soyuz 2
Soyuz 4 →
 

Soyuz 3 (Russian: Союз 3, Union 3) was a spaceflight mission launched by the Soviet Union on 26 October 1968. Flown by Georgy Beregovoy, the Soyuz 7K-OK spacecraft completed 81 orbits over four days. The 47-year-old Beregovoy was a decorated World War II flying ace and the oldest person to go into orbit up to that time. The mission achieved the first Russian space rendezvous with the uncrewed Soyuz 2, but failed to achieve a planned docking of the two craft.

Crew

Position Cosmonaut
Pilot Soviet Union Georgy Beregovoy
Only spaceflight

Backup crew

Position Cosmonaut
Pilot Soviet Union Vladimir Shatalov

Reserve crew

Position Cosmonaut
Pilot Soviet Union Boris Volynov

Mission parameters

  • Mass: 6,575 kg (14,495 lb)
  • Perigee: 196.0 km (121.8 mi) [2]
  • Apogee: 241.0 km (149.8 mi)
  • Inclination: 51.66°
  • Period: 88.87 minutes

Background

The Soviet space program had experienced great success in its early years, but by the mid-1960s the pace of success had slowed. While the Voskhod programme achieved the first multi-crewed spaceflight and first extravehicular activity (EVA), problems encountered led to its termination after only two flights, allowing the United States to surpass the Soviet achievements with the Project Gemini. The Soyuz programme was intended to rejuvenate the program by developing space rendezvous and docking capability, and practical extravehicular activity without tiring the cosmonaut, as had been demonstrated by the United States Gemini. These capabilities would be required for the Salyut programme (space station). Soyuz 1 had been launched with the goal of docking with the crewed Soyuz 2 craft, but even before the second craft was launched, problems with Soyuz 1 made it clear that Soyuz 2 had to be cancelled before the landing of Soyuz 1. This saved the lives of the three-man Soyuz 2 crew; Soyuz 1 ended with the death of cosmonaut Vladimir Komarov on 23 April 1967, due to a faulty parachute system. Soyuz 2 would have flown with the same defective system as Soyuz 1. As a result, the Soyuz spacecraft was revised for Soyuz 2 and Soyuz 3 in 1968.

Spaceflight

Soyuz 2 (capsule number 7K-OK-P No. 11)[3] was launched on 25 October 1968 as an uncrewed target vehicle for Soyuz 3 (capsule number 7K-OK-P No. 10),[3] which was launched the following day.[4] The launch of Soyuz 2 was not reported by the government, although other nations were aware through their own monitors.[5] It was not until Soyuz 3 was safely aloft that an official announcement was made.

The more conservative mission used Beregovoy as the single pilot, with Vladimir Shatalov designated as his backup, and Boris Volynov in reserve. Entering orbit and near Soyuz 2 a half-hour after launch,[6] Beregovoy gradually guided his craft within docking range (200 m (660 ft)) of his target.[7]

However, Beregovoy failed to achieve docking.[8][9] He failed to notice that Soyuz 2 was turned upside-down in relation to his craft, and used up too much of his maneuvering fuel in the attempt.[10]

He made a second rendezvous and docking attempt the next day, but again failed. Hours later, Soyuz 2 was sent back to Earth and landed by 07:51 GMT the next day. Beregovoy continued to orbit, making topographical and meteorological observations for the next two days.[11] Beregovoy also treated television viewers to a "live" tour of the spacecraft interior.[12] In addition, the Soviets published a photo of Soyuz 3's launch vehicle on the pad at Baikonur, marking the first time that the R-7 was shown to the outside world.

Return

Beregovoy and Soyuz 3 came back to Earth on 30 October 1968, after completing 81 full orbits of the Earth.[13] The descent module landed near the city of Karaganda in Kazakhstan, cushioned by a blizzard's snowfall.[14] Despite subzero temperatures, Beregovoy's landing was so easy he said later that he hardly felt the impact at all.[15] The Soviets hailed Soyuz 3 as a complete success. Beregovoy was promoted to Major general and named director of the national Center for Cosmonaut Training at Star City.

Soviet disingenuousness

The Soviet government concealed the fact that docking had been unsuccessfully attempted. Contemporary Western news reports described the orbital mission of Soyuz 3 in the same manner as the Soviet press, referring to a "successful rendezvous" with Soyuz 2, but characterizing it as a test with no actual ship-to-ship docking planned.[16] This interpretation was largely accepted for years afterward.[17] The intended docking was disclosed only after the breakup of the Soviet Union, allowing historians to reassess the presumed "success" of the mission.

Legacy

The flight of Soyuz 3 had numerous effects on future space exploration both short- and long-term. The flawless recovery of Soyuz 3 left the spacecraft designers with the impression that re-entry and landing systems had been perfected: the crash-landing of the Zond 6 satellite just one month later had been partly attributed to this mistaken sense of security.[18] The value of the outer space survey of Earth was a defining step in the development of the Soyuz program's grand strategy: the later evolution of space-based research platforms have roots in Beregovoy's lengthy and meticulous data-collection.[19] Even the failure of the space docking proved an experiential benefit to the Soviet space program: after the demoralizing catastrophe of Soyuz 1, the credible achievements and safe return of Soyuz 3 breathed new life into the faltering program. New flights continued apace, and they put the knowledge gained from Soyuz 3 towards missions of increasing audacity and success.[20]

References

  1. ↑ Wade, Mark (2016). "Baikonur LC31". Astronautix.com. http://www.astronautix.com/b/baikonurlc31.html. 
  2. ↑ 2.0 2.1 "Trajectory: Soyuz 3 1968-094A". NASA. 14 May 2020. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/displayTrajectory.action?id=1968-094A.  This article incorporates text from this source, which is in the public domain.
  3. ↑ 3.0 3.1 Soyuz-2 completes its mission www.russianspaceweb.com, accessed 27 December 2922
  4. ↑ Harvey, p. 205
  5. ↑ Clark, p. 49: "On 25 October [1968]... Western tracking stations picked up the launch of a new Soviet satellite. No Soviet announcement was immediately made, however. ... News of the launch of Soyuz 2 on the previous day was only revealed in the Soyuz 3 launch announcement"
  6. ↑ Harvey, p. 188: "Soyuz 2 was launched first, on 25 October 1968, uncrewed. Soyuz 3, with Georgy Beregovoy onboard, roared off the pad the next day into a misty drizzling midday sky. Half an hour later he was close to the target, Soyuz 2"
  7. ↑ Clark, p. 49: "The launch announcement said the Soyuz 3 had carried out a rendezvous with the uncrewed Soyuz 2 satellite. The two craft were brought to within 200 m of each other, with Soyuz 3 being the active partner"
  8. ↑ Hall & Shayler, p. 145: "...details recently received make it clear that docking was planned..."
  9. ↑ Hall & Shayler, p. 145: "...and that Beregevoi had failed to achieve it"
  10. ↑ Hall & Shayler, p. 145: "He [Beregovoy] did not turn his attention to the fact that the ship to which he was meant to dock [Soyuz 2] was overturned [upside-down in relation to his own Soyuz 3]... Therefore the approach of Soyuz 3 [caused] the pilotless object to turn away. In these erroneous manouvres, Beregevoy consumed all the fuel intended for the ship docking"
  11. ↑ Clark, p. 50: "During 28 October [1968], [Beregevoi] undertook a series of Earth observations, noting three regions of forest fires and a thunderstorm building up in the equatorial regions"
  12. ↑ Clark, p. 50: "[Beregevoi] took the opportunity of giving viewers a conducted tour around the interior of Soyuz. They were shown both the orbital and descent modules (of course, the rear instrument module could not be seen)..."
  13. ↑ Hall & Shayler, p. 146: "Beregevoi, in Soyuz 3, remained aloft for two more days, and accomplished a safe landing after the eighty-first orbit"
  14. ↑ Hall & Shayler, p. 147: "A blizzard had passed through the landing area earlier that day, and... he descended into a soft snow drift near the city of Karaganda"
  15. ↑ Harvey, p. 188: "Thick, early snow lay on the ground and the temperature was -12° Celsius... The impact was so gentle that Georgi Beregevoy barely noticed it"
  16. ↑ LIFE (11 August 1969), p. 59: "Georgi Beregevoi twice rendezvoused with an uncrewed Soviet capsule which had preceded him into space. But he made no attempt to dock with it"
  17. ↑ Gatland, p. 256: "Early tests are related to Georgy Beregovoy's October 1968 flight in Soyuz when the objective was to seek out the pilotless Soyuz 2 vehicle orbited earlier, approach it within docking distance and manoeuvre with the use of automatic and manual control systems"
  18. ↑ Harvey, p. 190: "The [Zond 6] landing accident was so serious that more work was still required on the landing systems, which had been considered solved by the smooth return of Soyuz 3"
  19. ↑ Hall & Shayler, p. 146: "Beregovoy's survey] was path-finding information for extending the use of Soyuz as an observation and research platform in addition to its role in lunar flights and possibly for its involvement in crewed space station operations"
  20. ↑ Clark, p. 50: "With Soyuz 3, the Soviet crewed programme regained its confidence, and its success may have encouraged the Soviets to consider a crewed flight around the Moon in December, 1968... Overall it represented a successful return to crewed space missions after a break of eighteen months"

Sources




Retrieved from "https://handwiki.org/wiki/index.php?title=Engineering:Soyuz_3&oldid=2529788"