science

OPUSAT

OPUSAT 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 OPUSAT rather than just read about it. In short: The Osaka Prefecture University Satellite, or OPUSAT was a technology demonstration cubesat built and operated by Japan's Osaka Prefecture University. It had a size of 100x100x100mm (without antennas and solar paddles) and build around a standard 1U cubesat bus.

Key takeaways

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

Reference excerpt

The Osaka Prefecture University Satellite, or OPUSAT was a technology demonstration cubesat built and operated by Japan's Osaka Prefecture University. It had a size of 100x100x100mm (without antennas and solar paddles) and build around a standard 1U cubesat bus. The primary satellite purpose was the space testing of the power system based on a Lithium-ion capacitor. The tests were largely successful, and it finished operation by reentry to Earth atmosphere on 24 July 2014. The OPUSAT was a development successor to “Maido Ichigo” satellite by East Osaka Craftmen Astro-Technology SOHLA in Osaka.

Worked examples

Example 1 — a first encounter with OPUSAT

Start with the simplest possible case. Write down what OPUSAT 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 OPUSAT 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 OPUSAT 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 OPUSAT

In research: OPUSAT 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 OPUSAT 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: OPUSAT is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2014 in Japan, Asian spacecraft stubs, Satellites of Japan, so understanding it makes those chapters shorter.
In everyday life: Look for OPUSAT 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 OPUSAT in 20 minutes

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

Frequently asked questions

What is OPUSAT in simple terms?

Why does OPUSAT 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 OPUSAT?

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 OPUSAT.