science

Type-90 cluster munition

Type-90 cluster munition 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 Type-90 cluster munition rather than just read about it. In short: The Type-90, also known as the MZD-2, is a Chinese submunition used in the 122 mm Type-81 cluster rocket. It is made by Norinco.

Key takeaways

Type-90 cluster munition belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Type-90 cluster munition to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Type-90 cluster munition from memory before moving on to harder problems.

Reference excerpt

The Type-90, also known as the MZD-2, is a Chinese submunition used in the 122 mm Type-81 cluster rocket. It is made by Norinco. Type-81 rockets with Type-90 submunitions were used by Hezbollah against Israel in the 2006 Lebanon War, and they have been used in the Syrian Civil War as bombs dropped by weaponized Hezbollah quadcopters. Each Type-90 resembles a small cylindrical bell with a ribbon at one end. A plastic band full of 3mm steel spheres wraps horizontally around the middle of the cylinder. Inside is an armor-piercing shaped charge. Each Type-81 rocket contains 39 Type-90 submunitions.

References

Worked examples

Example 1 — a first encounter with Type-90 cluster munition

Start with the simplest possible case. Write down what Type-90 cluster munition 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 Type-90 cluster munition 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 Type-90 cluster munition 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 Type-90 cluster munition

In research: Type-90 cluster munition 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 Type-90 cluster munition 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: Type-90 cluster munition is common in secondary-school and first-year university syllabi. It links to neighbouring topics Explosives stubs, Submunitions, so understanding it makes those chapters shorter.
In everyday life: Look for Type-90 cluster munition 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Type-90 cluster munition” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Type-90 cluster munition in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Type-90 cluster munition 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 Type-90 cluster munition out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Type-90 cluster munition in simple terms?

The Type-90, also known as the MZD-2, is a Chinese submunition used in the 122 mm Type-81 cluster rocket. It is made by Norinco.

Why does Type-90 cluster munition 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 Type-90 cluster munition?

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 Type-90 cluster munition.