science

Kosmos 51

Kosmos 51 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 Kosmos 51 rather than just read about it. In short: Kosmos 51 (Russian: Космос 51 meaning Cosmos 51), also known as DS-MT No.3 was a technology demonstration satellite which was launched by the Soviet Union in 1964 as part of the Dnepropetrovsk Sputnik programme. Its primary mission was to demonstrate an electric gyrodyne orientation system.

Key takeaways

Kosmos 51 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kosmos 51 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kosmos 51 from memory before moving on to harder problems.

Reference excerpt

Kosmos 51 (Russian: Космос 51 meaning Cosmos 51), also known as DS-MT No.3 was a technology demonstration satellite which was launched by the Soviet Union in 1964 as part of the Dnepropetrovsk Sputnik programme. Its primary mission was to demonstrate an electric gyrodyne orientation system. It also carried a scientific research package as a secondary payload, which was used to study cosmic rays and the luminosity of the stellar background. It was launched aboard a Kosmos 63S1 rocket from Site 86/1 at Kapustin Yar. The launch occurred at 23:02 GMT on 9 December 1964. Kosmos 51 was placed into a low Earth orbit with a perigee of 262 kilometres (163 mi), an apogee of 533 kilometres (331 mi), 48.8° of inclination, and an orbital period of 92.5 minutes. It decayed from orbit on 14 November 1965. Kosmos 51 was the last of three DS-MT satellites to be launched. The first was lost in a launch failure on 1 June 1963, and the second was launched as Kosmos 31 on 6 June 1964.

Worked examples

Example 1 — a first encounter with Kosmos 51

Start with the simplest possible case. Write down what Kosmos 51 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 Kosmos 51 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 Kosmos 51 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 Kosmos 51

In research: Kosmos 51 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 Kosmos 51 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: Kosmos 51 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1964 in spaceflight, 1964 in the Soviet Union, Dnepropetrovsk Sputnik program, so understanding it makes those chapters shorter.
In everyday life: Look for Kosmos 51 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 Kosmos 51 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kosmos 51 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 Kosmos 51 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kosmos 51 in simple terms?

Why does Kosmos 51 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 Kosmos 51?

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 Kosmos 51.