astronomy

Mauro Solar Riser

Mauro Solar Riser is a astronomy 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 Mauro Solar Riser rather than just read about it. In short: The Mauro Solar Riser is an American biplane ultralight electric aircraft that was the first crewed aircraft to fly on solar power. It was also only the second solar-powered aircraft to fly, after the uncrewed AstroFlight Sunrise, which had first flown 4+1⁄2 years earlier.

Key takeaways

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

Reference excerpt

The Mauro Solar Riser is an American biplane ultralight electric aircraft that was the first crewed aircraft to fly on solar power. It was also only the second solar-powered aircraft to fly, after the uncrewed AstroFlight Sunrise, which had first flown 4+1⁄2 years earlier.

Design and development The president of Ultralight Flying Machines, Larry Mauro, created the Solar Riser by converting a stock UFM Easy Riser hang glider to solar power. Normally foot-launched, the Solar Riser had wheeled landing gear added. Power is supplied by a Bosch electric starter motor of 3.5 hp (2.6 kW) connected to a 30-volt DC Nickel-cadmium battery pack taken from a Hughes 500 helicopter, powering a 41 in (104.1 cm) propeller through a reduction drive made from a timing belt and two pulleys. The battery was charged by a series of photovoltaic solar panels mounted in the top wing that provided 350 watts of power. The solar cells were not sufficient to provide all power in flight, so all flights were made by recharging the battery on the ground from the solar cells and then flying using energy stored in the battery. A charge in bright sunshine for an hour and a half yielded a flight of 3–5 minutes. Because the battery power was enough to launch the aircraft for a soaring flight it was theoretically possible to launch on battery power, soar while the batteries are being charged by sunlight and then continue powered flight. The Solar Riser did not employ the most efficient cells available at the time, and the upper wing had room for twice the number of cells to be installed. Early plans called for upgrading and increasing the number of cells so that sustained electric flight could be made using only solar energy and not battery power, but these plans were never completed.

Operational history With Larry Mauro as the pilot, the Solar Riser made the first man-carrying flight on solar power at noon on 29 April 1979 at Flabob Airport at Rubidoux, California, near Riverside. The aircraft reached a maximum height of about 40 ft (12 m) and flew 0.5 mi (0.8 km). A number of other flights of similar height and duration were flown, including demonstration flights at EAA AirVenture Oshkosh before the aircraft was retired to a museum.

Aircraft on display EAA AirVenture Museum - sole example

Specifications (Solar Riser) Data from EAA Museum and AstroFlightGeneral characteristics Crew: one Length: 8 ft 0 in (2.44 m) Wingspan: 30 ft 0 in (9.14 m) Empty weight: 123 lb (56 kg) Gross weight: 275 lb (125 kg) Powerplant: 1 × Bosch starter motor powered by a 30V DC 15 A-hour Nickel-cadmium battery, charged by a 36V 10A 350W solar array, 3.5 hp (2.6 kW) Propellers: 3 ft 7 in (1.09 m) diameter Performance

Maximum speed: 20 mph (32 km/h, 17 kn) Range: 0.50 mi (0.80 km, 0.43 nmi) Endurance: 3-5 minutes Service ceiling: 40 ft (12 m)

Illustrations

Worked examples

Example 1 — a first encounter with Mauro Solar Riser

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

In research: Mauro Solar Riser appears in astronomy 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 Mauro Solar Riser 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: Mauro Solar Riser is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1970s United States experimental aircraft, Aircraft first flown in 1979, Biplanes, so understanding it makes those chapters shorter.
In everyday life: Look for Mauro Solar Riser 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 Mauro Solar Riser in 20 minutes

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

Frequently asked questions

What is Mauro Solar Riser in simple terms?

Why does Mauro Solar Riser matter?

Because it connects several astronomy 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 Mauro Solar Riser?

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 Mauro Solar Riser.