science

Soyuz 16

Soyuz 16 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 16 rather than just read about it. In short: Soyuz 16 (Russian: Союз 16, Union 16) was a December, 1974, crewed test flight for a joint Soviet-United States space flight which culminated in the Apollo–Soyuz mission in July 1975. The two-man Soviet crew, Anatoly Filipchenko and Nikolai Rukavishnikov, tested a docking ring and other systems to be used in the joint flight.

Key takeaways

Soyuz 16 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 16 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Soyuz 16 from memory before moving on to harder problems.

Reference excerpt

Soyuz 16 (Russian: Союз 16, Union 16) was a December, 1974, crewed test flight for a joint Soviet-United States space flight which culminated in the Apollo–Soyuz mission in July 1975. The two-man Soviet crew, Anatoly Filipchenko and Nikolai Rukavishnikov, tested a docking ring and other systems to be used in the joint flight.

Crew

Backup crew

Reserve crew

Mission parameters Mass: 6,680 kg (14,730 lb) Perigee: 177.0 km (110.0 mi) Apogee: 223.0 km (138.6 mi) Inclination: 51.7° Period: 88.4 minutes

Background The Soyuz 16 mission was the final rehearsal and first crewed mission in a program which culminated in the Apollo–Soyuz (ASTP) mission seven months later. The Soviet Union and the United States, Cold War rivals, had signed several arms control treaties in the 1960s and 1970s, and had entered into a period of detente by the early 1970s. In 1972, a treaty was signed to participate in a joint crewed space flight as a symbol of this detente. Early concepts for a joint flight included the docking of a Soyuz craft to the American Skylab space station, or an Apollo vehicle docking with a Salyut space station. Once the Americans abandoned their Skylab station in 1974, the Apollo-Salyut concept seemed to be the logical choice, but since the Soviets had started to develop a universal docking adapter for the mission and feared having to publicly reveal details of their military-focused Salyut missions, the two powers opted to link a Soyuz spacecraft with an Apollo spacecraft. Three test flights of an uncrewed version of the ASTP spacecraft were flown: Kosmos 638, launched 3 April 1974; Kosmos 652, launched 15 May 1974; and Kosmos 672, launched 12 August 1974. These three flights, and Soyuz 16, were all launched with an improved version of a Soyuz booster.

Mission highlights In an unprecedented move, Soviet planners offered to inform their NASA counterparts of the time of the launch, as long as they did not reveal that time to the press. NASA officials refused to agree to that condition and, accordingly, were informed of the launch an hour after it occurred, on 2 December 1974. During the flight, Cosmonauts Anatoly Filipchenko and Nikolai Rukavishnikov tested the androgynous docking system to be used for the ASTP mission by retracting and extending a simulated 20 kg American docking ring. The crew also tested modified environmental systems, new solar panels and improved control systems, as well as a new radar docking system. Air pressure was reduced from 760 mm to 540 mm and oxygen raised from 20% to 40% to test reducing the planned transfer time to Apollo from two to one hour. On 7 December 1974, the docking ring was jettisoned with explosive bolts to test emergency measures if the capture latches got stuck during the ASTP flight. The craft landed 8 December 1974, near Arkalyk and was hailed a complete success. The mission duration, six days, matched the ASTP mission duration to within 10 minutes.

References

External links

Soyuz 16 Diary

Illustrations

Worked examples

Example 1 — a first encounter with Soyuz 16

Start with the simplest possible case. Write down what Soyuz 16 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 16 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 16 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 16

In research: Soyuz 16 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 16 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 16 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1974 in the Soviet Union, Crewed Soyuz missions, Spacecraft launched by Soyuz-U rockets, so understanding it makes those chapters shorter.
In everyday life: Look for Soyuz 16 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 16 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Soyuz 16 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Soyuz 16 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Soyuz 16 in simple terms?

Why does Soyuz 16 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 16?

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 16.