science

Progress 42

Progress 42 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 Progress 42 rather than just read about it. In short: Progress 42 (Russian: Прогресс 42) was a Soviet unmanned Progress cargo spacecraft, which was launched in May 1990 to resupply the Mir space station. Launch Progress 42 launched on 5 May 1990 from the Baikonur Cosmodrome in the Kazakh SSR.

Key takeaways

Progress 42 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Progress 42 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Progress 42 from memory before moving on to harder problems.

Reference excerpt

Progress 42 (Russian: Прогресс 42) was a Soviet unmanned Progress cargo spacecraft, which was launched in May 1990 to resupply the Mir space station.

Launch Progress 42 launched on 5 May 1990 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U2 rocket.

Docking Progress 42 docked with the aft port of the Kvant-1 module of Mir on 7 May 1990 at 22:45:03 UTC, and was undocked on 27 May 1990 at 07:08:58 UTC.

Decay It remained in orbit until 27 May 1990, when it was deorbited. The deorbit burn occurred at 11:40:00 UTC and the mission ended at 12:27:30 UTC.

Illustrations

Worked examples

Example 1 — a first encounter with Progress 42

Start with the simplest possible case. Write down what Progress 42 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 Progress 42 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 Progress 42 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 Progress 42

In research: Progress 42 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 Progress 42 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: Progress 42 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1990 in the Soviet Union, Cargo spaceflights to Mir, Progress (spacecraft) missions, so understanding it makes those chapters shorter.
In everyday life: Look for Progress 42 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 Progress 42 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Progress 42 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 Progress 42 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Progress 42 in simple terms?

Progress 42 (Russian: Прогресс 42) was a Soviet unmanned Progress cargo spacecraft, which was launched in May 1990 to resupply the Mir space station. Launch Progress 42 launched on 5 May 1990 from the Baikonur Cosmodrome in the Kazakh SSR.

Why does Progress 42 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 Progress 42?

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 Progress 42.