science

Safran Patroller

Safran Patroller 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 Safran Patroller rather than just read about it. In short: The Patroller is a French medium-altitude long-endurance unmanned aerial vehicle developed and manufactured by Safran Electronics & Defense (formerly by SAGEM). The airframe is based on the Stemme ASP S15 motor glider.

Key takeaways

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

Reference excerpt

The Patroller is a French medium-altitude long-endurance unmanned aerial vehicle developed and manufactured by Safran Electronics & Defense (formerly by SAGEM). The airframe is based on the Stemme ASP S15 motor glider. The first flight was in June 2009 at Kemijarvi in Finland; it was shown at the 2009 Paris Air Show. The Patroller is a Medium-altitude long-endurance unmanned aerial vehicle (MALE) by the definition of the NATO. It completed another series of flight tests in July 2010, which demonstrated it is capable of missions lasting 20–30 hours; it can carry a 250 kg payload (including 80 kg under each wing). The Patroller will carry out imaging and surveillance trials in southern France, detecting forest fires. The Patroller uses the same ground control station as Sperwer II. A Ku-band datalink is used; range is limited to 200 km (line of sight). Safran Electronics & Defense and Egyptian aircraft factory AOI have signed a collaboration agreement concerning the Patroller UAV. AOI-Aircraft Factory could handle final assembly of the drones and will develop a dedicated training center in Egypt to train staff for the operation and maintenance of the drone systems. The cost of the first 14 Patrollers for the French Army in 2016, including 12 years maintenance, was €300 million.

Operators France French Army: 5 systems (28 drones) planned and to be delivered by 2030; first system (5 drones) to be delivered in summer 2023. Initial pre-production example was handed over to the French Army’s 61st Artillery Regiment in May 2023 for evaluation and familiarisation. Greece Hellenic Army: First export customer; 4 drones and 3 ground stations ordered in June 2023 to complement or replace the SAGEM Sperwer.

Specifications Data from General characteristics Crew: 0 Length: 8.5 m (27 ft 11 in) Wingspan: 18 m (59 ft 1 in) Powerplant: 1 × liquid air cooled turbocharged Rotax 914F Performance

Maximum speed: 314 km/h (195 mph, 169 kn) Cruise speed: 92 km/h (57 mph, 50 kn) Endurance: 30 hours Service ceiling: 7,620 m (25,000 ft) Takeoff distance: 250 m (820 ft) Avionics

Euroflir 410 EO and IR sensors

Illustrations

Worked examples

Example 1 — a first encounter with Safran Patroller

Start with the simplest possible case. Write down what Safran Patroller 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 Safran Patroller 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 Safran Patroller 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 Safran Patroller

In research: Safran Patroller 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 Safran Patroller 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: Safran Patroller is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aircraft first flown in 2009, High-wing aircraft, Medium-altitude long-endurance unmanned aerial vehicles, so understanding it makes those chapters shorter.
In everyday life: Look for Safran Patroller 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 Safran Patroller in 20 minutes

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

Frequently asked questions

What is Safran Patroller in simple terms?

Why does Safran Patroller 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 Safran Patroller?

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 Safran Patroller.