science

Progress 19

Progress 19 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 19 rather than just read about it. In short: Progress 19 (Russian: Прогресс 19) was a Soviet uncrewed Progress cargo spacecraft, which was launched in February 1984 to resupply the Salyut 7 space station. Spacecraft Progress 19 was a Progress 7K-TG spacecraft.

Key takeaways

Progress 19 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 19 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Progress 19 from memory before moving on to harder problems.

Reference excerpt

Progress 19 (Russian: Прогресс 19) was a Soviet uncrewed Progress cargo spacecraft, which was launched in February 1984 to resupply the Salyut 7 space station.

Spacecraft Progress 19 was a Progress 7K-TG spacecraft. I was the 19th of forty-three to be launched; it had the serial number 120. The Progress 7K-TG spacecraft was the first generation Progress, derived from the Soyuz 7K-T and intended for uncrewed logistics missions to space stations in support of the Salyut programme. On some missions the spacecraft were also used to adjust the orbit of the space station. The Progress spacecraft had a dry mass of 6,520 kilograms (14,370 lb), which increased to around 7,020 kilograms (15,480 lb) when fully fuelled. It measured 7.48 metres (24.5 ft) in length, and 2.72 metres (8 ft 11 in) in diameter. Each spacecraft could accommodate up to 2,500 kilograms (5,500 lb) of payload, consisting of dry cargo and propellant. The spacecraft were powered by chemical batteries, and could operate in free flight for up to three days and remain docked to the station for up to thirty.

Launch Progress 19 launched on 21 February 1984 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U rocket.

Docking Progress 19 docked with the aft port of Salyut 7 on 23 February 1984 at 08:21 UTC, and was undocked on 31 March 1984 at 09:40 UTC.

Decay It remained in orbit until 1 April 1984, when it was deorbited. The deorbit burn occurred at 18:18 UTC, with the mission ending at around 19:05 UTC.

Illustrations

Worked examples

Example 1 — a first encounter with Progress 19

Start with the simplest possible case. Write down what Progress 19 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 19 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 19 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 19

In research: Progress 19 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 19 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 19 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1984 in the Soviet Union, Progress (spacecraft) missions, Soviet spacecraft stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Progress 19 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 19 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Progress 19 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 19 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Progress 19 in simple terms?

Progress 19 (Russian: Прогресс 19) was a Soviet uncrewed Progress cargo spacecraft, which was launched in February 1984 to resupply the Salyut 7 space station. Spacecraft Progress 19 was a Progress 7K-TG spacecraft.

Why does Progress 19 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 19?

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 19.