science

Progress M-15

Progress M-15 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 M-15 rather than just read about it. In short: Progress M-15 (Russian: Прогресс М-15) was a Russian uncrewed cargo spacecraft which was launched in 1992 to resupply the Mir space station. The thirty-third of sixty-four Progress spacecraft to visit Mir, it used the Progress-M 11F615A55 configuration, and had the serial number 215.

Key takeaways

Progress M-15 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 M-15 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Progress M-15 from memory before moving on to harder problems.

Reference excerpt

Progress M-15 (Russian: Прогресс М-15) was a Russian uncrewed cargo spacecraft which was launched in 1992 to resupply the Mir space station. The thirty-third of sixty-four Progress spacecraft to visit Mir, it used the Progress-M 11F615A55 configuration, and had the serial number 215. It carried supplies including food, water and oxygen for the EO-12 crew aboard Mir, as well as equipment for conducting scientific research, and fuel for adjusting the station's orbit and performing manoeuvres. It also transported the Mak 2 satellite, which was deployed from Mir on 20 November. TORU manual docking system was first tested in this mission. Progress M-15 was launched at 17:19:41 GMT on 27 October 1992, atop a Soyuz-U2 carrier rocket flying from Site 31/6 at the Baikonur Cosmodrome. Following two days of free flight, it docked with the aft port of the Kvant-1 module at 17:19:41 GMT on 29 October. During the 97 days for which Progress M-15 was docked, Mir was in an orbit of around 396 by 399 kilometres (214 by 215 nmi), inclined at 51.6 degrees. Progress M-15 undocked from Mir at 00:44:53 GMT on 4 February 1993, however it remained in orbit to conduct the Znamya 2 experiment, and research into autonomous flight. It was deorbited on 7 February, and burned up during reentry over the Pacific Ocean at around 08:03:35 GMT.

Worked examples

Example 1 — a first encounter with Progress M-15

Start with the simplest possible case. Write down what Progress M-15 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 M-15 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 M-15 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 M-15

In research: Progress M-15 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 M-15 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 M-15 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1993 in spaceflight, Cargo spaceflights to Mir, Progress (spacecraft) missions, so understanding it makes those chapters shorter.
In everyday life: Look for Progress M-15 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 M-15 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Progress M-15 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 M-15 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Progress M-15 in simple terms?

Why does Progress M-15 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 M-15?

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 M-15.