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Soyuz 13

Soyuz 13 is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Soyuz 13 rather than just read about it. In short: Soyuz 13 (Russian: Союз 13, Union 13) was a December, 1973, Soviet crewed space flight, the second test flight of the redesigned Soyuz 7K-T spacecraft that first flew as Soyuz 12. The spacecraft was specially modified to carry the Orion 2 Space Observatory.

Soyuz 13 — main illustration
Soyuz 13 — illustration

Key takeaways

  • Soyuz 13 belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Soyuz 13 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Soyuz 13 from memory before moving on to harder problems.

Reference excerpt

Soyuz 13 (Russian: Союз 13, Union 13) was a December, 1973, Soviet crewed space flight, the second test flight of the redesigned Soyuz 7K-T spacecraft that first flew as Soyuz 12. The spacecraft was specially modified to carry the Orion 2 Space Observatory. The flight, crewed by Pyotr Klimuk and Valentin Lebedev, was the Soviet Union's first dedicated science mission, and was the first mission controlled by the new Kaliningrad Mission Control Center.

Crew

Backup crew

Reserve crew

Mission parameters Mass: 6,570 kg (14,480 lb) Perigee: 225.0 km (139.8 mi) Apogee: 272.0 km (169.0 mi) Inclination: 51.60° Period: 89.20 minutes

Mission highlights Launched 18 December 1973, the Soyuz 13 crew of Klimuk and Lebedev performed some of the experiments intended for the failed Salyut space stations from the previous year. Unlike Soyuz 12, the craft was equipped with solar panels to allow for an extended mission. Additionally, an orbital module was attached replacing unneeded docking equipment. This module included the Orion 2 Space Observatory (see below). The crew used a multispectral camera to measure the atmosphere and pollution. They also tested the Oasis 2 closed ecology system, and harvested protein, yielding 30 times the original biomass. Medical tests were also carried out, including experiments to measure blood flow to the brain. The crew landed in a heavy snowstorm on 26 December 1973, but were recovered a few minutes later, some 200 km at southwest of Karaganda, Kazakhstan. During its 8-day mission, Soyuz 13 was in orbit around the Earth at the same time as the U.S. Skylab 4 mission, which had been launched on 16 November, and which would remain in orbit until 8 February, marking the first time that both the United States and the Soviet Union had crewed missions operating simultaneously.

Orion 2 Space Observatory The Orion 2 Space Observatory, designed by Grigor Gurzadyan, was operated by crew member Lebedev. Ultraviolet spectrograms of thousands of stars to as faint as 13th magnitude were obtained by a wide-angle meniscus telescope of the Cassegrain system, with an aperture diameter of 240 mm, an equivalent focal length of 1000 mm, and a 4-grade quartz prism objective. The dispersion of the spectrograph was 17, 28 and 55 nm/mm, at wavelengths of 200, 250 and 300 nm respectively. The first satellite Ultraviolet spectrogram of a planetary nebula (IC 2149 in Auriga) was obtained, revealing lines of aluminium and titanium - elements not previously observed in objects of that type. Two-photon emission in that planetary nebula and a remarkable star cluster in Auriga were also discovered. Additionally, comet Kohoutek was observed.

See also

1973 in spaceflight

References

External links G. A. Gurzadyan, Ultraviolet spectra of Capella, Nature, vol. 250, p. 204, 1974 [1] G. A. Gurzadyan, S. S. Rustambekova, Silicon-rich stellar envelope? Nature, vol. 254, p. 311, 1975 [2] G. A. Gurzadyan, A. L. Jarakyan, M. N. Krmoyan, A. L. Kashin, G. M. Loretsyan, J. B. Ohanesyan, Space astrophysical observatory Orion-2, Astrophysics and Space Science, vol.40, p. 393, 1976 [3] G. A. Gurzadyan, Two-photon emission in planetary nebula IC 2149, Astronomical Society of the Pacific Publications, vol.88, p. 891, 1976 [4] H. A. Abt, Spectral types in Gurzadyan's clustering in Auriga, Astronomical Society of the Pacific Publications, vol.90, p. 555, 1978 [5]

Illustrations

Soyuz 13 illustration
Soyuz 13 illustration

Worked examples

Example 1 — a first encounter with Soyuz 13

Start with the simplest possible case. Write down what Soyuz 13 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Soyuz 13 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Soyuz 13 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Soyuz 13

In research
Soyuz 13 appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Soyuz 13 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Soyuz 13 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1973 in spaceflight, 1973 in the Soviet Union, Crewed Soyuz missions, so understanding it makes those chapters shorter.
In everyday life
Look for Soyuz 13 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Soyuz 13 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Soyuz 13 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Soyuz 13 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Soyuz 13 in simple terms?

Soyuz 13 (Russian: Союз 13, Union 13) was a December, 1973, Soviet crewed space flight, the second test flight of the redesigned Soyuz 7K-T spacecraft that first flew as Soyuz 12. The spacecraft was specially modified to carry the Orion 2 Space Observatory.

Why does Soyuz 13 matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Soyuz 13?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Soyuz 13.

Tags

  • 1973 in spaceflight
  • 1973 in the Soviet Union
  • Crewed Soyuz missions
  • Spacecraft launched in 1973

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