physics

Solar-powered aircraft

Solar-powered aircraft is a physics 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 Solar-powered aircraft rather than just read about it. In short: Solar-powered aircraft are electric aircraft that can be an airplane, blimp, or airship and use either a battery or hydrogen to store the energy produced by the solar cells and use that energy at night when the sun isn't shining. Usage Solar-powered aircraft do not require fuel, so they don't require oxygen, and they are able to operate at altitudes over 20 kilometres (12 mi) to 100 kilometres (62 mi) for months at…

Key takeaways

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

Reference excerpt

Solar-powered aircraft are electric aircraft that can be an airplane, blimp, or airship and use either a battery or hydrogen to store the energy produced by the solar cells and use that energy at night when the sun isn't shining.

Usage Solar-powered aircraft do not require fuel, so they don't require oxygen, and they are able to operate at altitudes over 20 kilometres (12 mi) to 100 kilometres (62 mi) for months at a time. Conventional passenger or cargo aircraft usages aren't practical yet with modern technology, but high-altitude platform stations and long-endurance missions over a fixed location with unmanned aircraft or airships are feasible. Thus solar-powered aircraft could be used in telecommunications, video/imagery, flight control by transporting airport surveillance radars, in precipitation detection by transporting weather radars, geopositioning Global Positioning Systems (GPS), and other pseudo satellite applications that transpond the data with ground stations.

List of solar airplanes

This list is non-exhaustive.

AstroFlight Sunrise - first uncrewed solar flight in 1974 SolarOne - First manned solar flight in december 1978 Mauro Solar Riser - first flight in April 1979 MacCready Gossamer Penguin - second crewed solar flight in May 1980 Pathfinder Centurion Helios Facebook Aquila Solar Impulse - first manned solar aircraft to circumnavigate the globe. Since reconfigured by Skydweller Aero into an uncrewed autonomous drone. Airbus Zephyr Kea Atmos Mk1 solar powered stratospheric HAPS BAE Systems PHASA-35 HAPSMobile Hawk30 SolarStratos -It is the highest manned solar- and electric-powered aircraft, having flown at an altitude of more than 9,500 metres

Solar airships

Solar Airship One is being developed by Euro Airship and is planning to launch a world tour in 2026 and fly by 25 countries in 20 days as it travels around the world non-stop. It will be autonomous and use electrolysis to store hydrogen to keep moving at night when the sun isn't shining.

Illustrations

Worked examples

Example 1 — a first encounter with Solar-powered aircraft

Start with the simplest possible case. Write down what Solar-powered aircraft claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Solar-powered aircraft 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 Solar-powered aircraft 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 Solar-powered aircraft

In research: Solar-powered aircraft appears in physics 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 Solar-powered aircraft 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: Solar-powered aircraft is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aviation and the environment, Balloon-borne experiments, Balloons (aeronautics), so understanding it makes those chapters shorter.
In everyday life: Look for Solar-powered aircraft 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 Solar-powered aircraft in 20 minutes

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

Frequently asked questions

What is Solar-powered aircraft in simple terms?

Why does Solar-powered aircraft matter?

Because it connects several physics 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 Solar-powered aircraft?

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 Solar-powered aircraft.