To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

From Wikipedia, the free encyclopedia

Zond 3
Zond 2.jpg
Mission typeLunar science
OperatorOKB-1
COSPAR ID1965-056A
SATCAT no.01454
Mission duration228 days
Spacecraft properties
Spacecraft type3MV-4
ManufacturerOKB-1
Launch mass960 kg (2,120 lb)
Start of mission
Launch dateJuly 18, 1965, 14:38 (1965-07-18UTC14:38) UTC
RocketMolniya SL-6/A-2-e
Launch siteBaikonur LC-1/5
End of mission
Last contactMarch 3, 1966 (1966-03-04)[1]
Orbital parameters
Reference systemHeliocentric
Eccentricity0.2683
Perihelion altitude0.9 AU (130 million km)
Aphelion altitude1.56 AU (233 million km)
Inclination0.5°
Period500 days
EpochJuly 19, 1965, 20:00 UTC[2]
Flyby of Moon
Closest approachJuly 20, 1965
Distance9,219 km (5,728 mi)
None →
 

Zond 3 was a 1965 space probe which performed a flyby of the Moon's far side,[3] taking a number of quality photographs for its time. It was a member of the Soviet Zond program while also being part of the Mars 3MV project. It was unrelated to Zond spacecraft designed for manned circumlunar missions (Soyuz 7K-L1). It is believed that Zond 3 was initially designed as a companion spacecraft to Zond 2 to be launched to Mars during the 1964 launch window. The opportunity to launch was missed, and the spacecraft was launched on a Mars-crossing trajectory as a spacecraft test, even though Mars was no longer attainable.

Spacecraft design

The spacecraft was of the 3MV-4 type, similar to Zond 2.[1] In addition to a 106.4 mm focal length f/8 imaging system for visible light photography and ultraviolet spectrometry at 285-355 μm, it carried ultraviolet (190-275 μm) and infrared (3-4 μm) spectrophotometers, radiation sensors (gas-discharge and scintillation counters), charged particle detector, magnetometer, and micrometeoroid detector.[1][4] It also had an experimental ion engine.

Operational history

Zond 3 was launched from Baikonur Cosmodrome on July 18, 1965, at 14:38 UTC, and was deployed from a Tyazhely Sputnik (65-056B) Earth-orbiting platform towards the Moon and interplanetary space. This was a repeat of a mission that failed in late 1963 intended to test communication at distances equivalent to the distances experienced by Mars and Earth.[5]

Zond 3's lunar flyby occurred on July 20 with a closest approach of 9,219 km (5,728 mi),[1] approximately 35 hours after launch. 25 visible light photographs and 3 ultraviolet spectra of very good quality were taken of the lunar surface, beginning at 01:24 UTC and 11,570 km (7,190 mi) prior to closest approach and ending at 02:32 UTC and 9,960 km (6,190 mi) past closest approach, covering a period of 68 minutes.[1][6] The photos covered 19 million km2 (7.3 million sq mi) of the lunar surface.[7]

Zond 3 proceeded on a trajectory across Mars' orbit, but not at a time when planetary encounter would occur. These images were transmitted by radio frequency on July 29 at a distance of 2.25 million km (1.40 million mi). To test telemetry, the camera film was rewound and retransmitted in mid-August, mid-September, and finally on October 23 at a distance of 31.5 million km (19.6 million mi), thus proving the ability of the communications system.[1] The subsequent transmissions were also at progressively slower data rates but higher quality.[5] The mission was ended after radio contact ceased on March 3, 1966, when it was at a distance of 153.5 million km (95.4 million mi).[1][4] It operated for 228 days, roughly equivalent to the time needed to survive a journey to Mars and exceeding that needed for Venus.[1]

References

  1. ^ a b c d e f g h LePage, Andrew J. (July 27, 2015). "The mission of Zond 3". The Space Review.
  2. ^ "Zond 3 – Trajectory Details". NASA Space Science Data Coordinated Archive. NASA. Retrieved June 2, 2018.
  3. ^ Harvey, Brian (August 17, 2007). Soviet and Russian Lunar Exploration. Springer Science+Business Media. p. 82. ISBN 978-0-387-73976-2.
  4. ^ a b Huntress, Jr., Wesley T.; Marov, Mikhail Ya. (2011). Soviet Robots in the Solar System: Mission Technologies and Discoveries. Springer-Praxis Books in Space Exploration. Springer Science+Business Media. pp. 130–132. doi:10.1007/978-1-4419-7898-1. ISBN 978-1-4419-7897-4.
  5. ^ a b Teitel, Amy Shira (July 18, 2013). "Zond 3: First to See Moon's Far Side on the Way to Mars". Discovery News. Archived from the original on April 12, 2016.
  6. ^ Siddiqi, Asif A. (June 2002). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History. 24. NASA. pp. 49–50. ISBN 0-16-067405-0. SP-2002-4524.
  7. ^ "Zond 3 - Details". NASA Space Science Data Coordinated Archive. NASA. Retrieved June 2, 2018.

External links

Preceded by
Zond 2
Zond program Succeeded by
None

This page was last edited on 20 July 2021, at 19:34
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.