science

Progress M-11M

Progress M-11M 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-11M rather than just read about it. In short: Progress M-11M (Russian: Прогресс М-11М), identified by NASA as Progress 43P, is a Progress spacecraft which was launched on 21 June 2011 to resupply the International Space Station. It was the eleventh Progress-M 11F615A60 spacecraft to be launched.

Key takeaways

Progress M-11M 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-11M to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Progress M-11M from memory before moving on to harder problems.

Reference excerpt

Progress M-11M (Russian: Прогресс М-11М), identified by NASA as Progress 43P, is a Progress spacecraft which was launched on 21 June 2011 to resupply the International Space Station. It was the eleventh Progress-M 11F615A60 spacecraft to be launched. The spacecraft is manufactured by RKK Energia, and will be operated by the Russian Federal Space Agency. Progress M-11M transferred more than 2500 kg of cargo to the Space Station, including food, water, scientific hardware, propellant, and cargo for the Russian Federal Space Agency (Roscosmos), NASA and the Japanese Space Agency, (JAXA).

Launch

The Soyuz-U rocket that carried the Progress M-11M cargo spacecraft into orbit was rolled out on 19 June 2011. Following the roll out, the rocket was erected in vertical in Baikonur's pad 1. L-2 days, operations were successfully completed on the day with integrated tests that included verification of the launch facilities and simulation of the lift-off and initial stages of the launch sequence. The Progress M-11M was lifted off atop a Soyuz-U rocket from the Baikonur Space Center in Kazakhstan. After the launch, the spacecraft reached a preliminary orbit of 240.09 km by 193.96 km. The revolution of the successfully injected orbit was 88.54 minutes. A series of engine firings over the next two days guided the ship to set up a rendezvous with the Space Station.

Docking Progress M-11M docked with the Zvezda service module of the Space Station at 16:37 UTC on 23 June 2011. The docking occurred 394 km above eastern Kazakhstan and under monitoring of the mission control center and the station crew after Progress ship approached the station on auto pilot. The docking was monitored by the Mission Control Center in Moscow and the station Expedition 28 crew.

Cargo The cargo of Progress M-11M included 1276 kg of equipment, food, clothing, life support system gear, 740 kg of propellant, 420 kg of water and some 50 kg of oxygen and air.

Inventory Total cargo mass delivered: 2673 kg

Station reboost The four attitude thrusters of Progress M-11M was fired on 1 July 2011 to reboost the Space Station. After the burn, the ISS orbit was raised by 3.5 km and achieved 388.3 km. The purpose of the reboost was to gain altitude and set up phasing conditions for Space Shuttle Atlantis' STS-135 (ULF7) mission.

References

Illustrations

Worked examples

Example 1 — a first encounter with Progress M-11M

Start with the simplest possible case. Write down what Progress M-11M 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-11M 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-11M 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-11M

In research: Progress M-11M 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-11M 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-11M is common in secondary-school and first-year university syllabi. It links to neighbouring topics Progress (spacecraft) missions, Spacecraft launched by Soyuz-U rockets, Spacecraft launched in 2011, so understanding it makes those chapters shorter.
In everyday life: Look for Progress M-11M 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-11M in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Progress M-11M 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-11M out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Progress M-11M in simple terms?

Why does Progress M-11M 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-11M?

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-11M.