science

PZR Grom

PZR Grom 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 PZR Grom rather than just read about it. In short: PZR Grom (Grom, meaning "thunder" in Polish) is a man-portable air-defense system produced in Poland and based on the Soviet man-portable infrared homing surface-to-air missile (SAM) 9K38 Igla. It consists of a 72 mm anti-aircraft missile set with a flight speed of 650 m/s, as well as a single-use launcher, re-usable gripstock and thermal battery coolant assembly electric unit.

Key takeaways

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

Reference excerpt

PZR Grom (Grom, meaning "thunder" in Polish) is a man-portable air-defense system produced in Poland and based on the Soviet man-portable infrared homing surface-to-air missile (SAM) 9K38 Igla. It consists of a 72 mm anti-aircraft missile set with a flight speed of 650 m/s, as well as a single-use launcher, re-usable gripstock and thermal battery coolant assembly electric unit. The full name of the system is Przeciwlotniczy Zestaw Rakietowy Grom (lit. 'anti-air rocket-propelled set'). It is designed to target low-flying helicopters and aeroplanes. As such, the Grom missile is used by other surface-to-air defence systems manufactured in Poland, including ZSU-23-4MP Biała, ZUR-23-2 kg and Poprad self-propelled artillery system. It should not be confused with versions of the Zvezda Kh-23 air-to-surface missile built under licence in Yugoslavia/Serbia as the Grom-A and Grom-B.

History

Initially at least since the 1970s the MESKO metal works in Skarżysko-Kamienna mass-produced license-built Soviet Strela-2M (SA-7 Grail) surface-to-air missiles, designated in Poland as Strzała-2M. However, when these became outdated in the late 1980s the lead designers prepared the works to produce a more modern Soviet design, the 9K38 Igla (SA-18 Grouse). However, Poland left the Soviet bloc in 1990 and the license was declined, thus leaving Poland with no modern MANPADS at hand. Because of that, in late 1992 various Polish works and design bureaus (among them the Zielonka-based Military Institute of Armament Technology, the WAT Military University of Technology and the Skarżysko Rocket Design Bureau) started working on a new Igla-like design. These were allegedly helped by the Polish intelligence services able to buy the design plans of the original 9K38 Igla missile system in the LOMO works in Leningrad (modern St. Petersburg) during the turmoil following the dissolution of the Soviet Union. By 1995 the first batch (marked as GROM-1) entered service. It included a number of imported Russian components. By the late 1990s these were replaced with entirely Poland-designed elements. On January 1, 2013, Bumar Amunicja manufactured their 2,000th Grom missile set. Grom was later improved into what became known as the Piorun, with a new seeker and rocket motor.

Design The system is designed to be operated by one soldier. It consists of a single-stage projectile, a single-use tubular launcher, a starting mechanism, and an on-ground power supply. The rocket projectile uses solid propellant. The infrared aiming sensor is cooled with liquid nitrogen. There are options for identification friend or foe and thermovision.

Operational history The 'Grom' has been used by Polish Land Forces since 1995. It is also exported to other countries, including Georgia which bought 30 launchers and 100 missiles in 2007. According to press releases during the Russo-Georgian War, Polish-made GROM missiles targeted Russian planes and helicopters 20 times, 12 missiles were fired out of which 9 hit their targets, and most likely shot down a Su-25. The Indonesian Army bought around 152 Grom missiles as part of Kobra (Aster) V-SHORAD system, including four Poprad mobile launchers, 12 ZUR-23-2 kg-I launchers and 76 missiles delivered in 2007 and the second such system ordered in 2006. In March 2012, Peru chose the winners of a $140 million competition meant to upgrade its air defence systems, choosing among others 50 Grom launchers and six Poprad mobile launchers. However, there have been no reports of the deal being finalized.

Political relevance In late 2008, the Russian press made claims that Russian Army personnel had discovered Polish GROM missiles in Chechnya. In response, the Polish press quickly reacted and accused Russia of fabricating evidence to falsely link Poland to the conflict. The Polish press claimed that the missiles had actually been moved by Russians from Georgia to Chechnya.

Operators

Current operators Georgia – 30 launchers and 100+ missiles, were used in Russo-Georgian war. Indonesia – In use as a part of Aster system. Lithuania – 18 launchers bought in 2014, in 2023 another batch worth around $20 million was bought. Poland – Around 400 launchers and 2000 missiles of Grom version, 400 missiles of Piorun version, 420 launchers and 1300 missiles of Piorun version on order.

Evaluation only Japan – One launcher and five missiles, bought in 2010 for testing. Russia – Captured unknown quantity of launchers in Georgia (One launcher was sent to the separatists in Ukraine). United States – purchased 120 missiles.

See also Anza (missile) – (Pakistan) Misagh-2 – (Iran) Qaem – (Iran) FIM-92 Stinger – (United States) Mistral – (France) Sungur – (Turkey) Starstreak – (United Kingdom) 9K38 Igla – (Soviet Union) RBS 70 – (Sweden) QW-3 – (China)

References

External links MESKO—Ammunition, Fuses, Primers and Missile Components—Producer site GROM MAn-Portable Air-Defense missile System MANPADS on armyrecognition.com Archived 2017-12-16 at the Wayback Machine

Illustrations

Worked examples

Example 1 — a first encounter with PZR Grom

Start with the simplest possible case. Write down what PZR Grom 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 PZR Grom 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 PZR Grom 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 PZR Grom

In research: PZR Grom 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 PZR Grom 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: PZR Grom is common in secondary-school and first-year university syllabi. It links to neighbouring topics 20th-century surface-to-air missiles, 21st-century surface-to-air missiles, Guided missiles of Poland, so understanding it makes those chapters shorter.
In everyday life: Look for PZR Grom 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 PZR Grom in 20 minutes

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

Frequently asked questions

What is PZR Grom in simple terms?

Why does PZR Grom 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 PZR Grom?

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 PZR Grom.