science

OSU PG-I

OSU PG-I 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 OSU PG-I rather than just read about it. In short: The PG-I was an experimental glider built by a team of Ohio State University undergraduates, and was notable for being constructed entirely of paper and cardboard. Background Prompted by a 1970 paper airplane contest jointly sponsored by the Columbus Dispatch newspaper and the Columbus-based Center of Science and Industry, a team of six OSU students, led by David W.

Key takeaways

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

Reference excerpt

The PG-I was an experimental glider built by a team of Ohio State University undergraduates, and was notable for being constructed entirely of paper and cardboard.

Background Prompted by a 1970 paper airplane contest jointly sponsored by the Columbus Dispatch newspaper and the Columbus-based Center of Science and Industry, a team of six OSU students, led by David W. Hall, decided to build the world's first piloted paper airplane. It was to be constructed using only paper, cardboard, glue and masking tape.

Design and construction The design phase of the project commenced in May 1970, with the original design being modelled on the Tupolev ANT-1 low-wing monoplane. The craft was later re-designed to relocate the wing to a mid-fuselage position. Initial engineering calculations determined their design would have a wingspan of 28 ft (8.5 m), a wing area of 80 ft2 (7.4 m2), weigh 500 lb (230 kg) and have a take-off speed of 35 mph (56 km/h). During construction, a further re-design occurred, with the wing being raised to a shoulder-wing position. Issues with the structural strength of the tubing used for the wing-spars resulted in the span being reduced to 18 ft (5.5 m). The wing was constructed from three tubular spars made of rolled cardboard, with wing ribs constructed from plies of corrugated paper, and was covered using two plies of brown wrapping paper. The fuselage was built using four longitudinal tubular spars. Sheets of corrugated cardboard doubled as the nose of the fuselage and as the landing skid. Additionally, string and nylon cords were used to apply tension within the glider's framework.

Operational history Testing of the PG-I, without a pilot aboard, took place during August 1970 at Don Scott Field, now known as Ohio State University Airport. An initial towed test on August 21 confirmed a take-off speed of 41 mph (66 km/h). A later towed test on August 30 saw the PG-I making a flight that lasted seven seconds, covering a distance of 300 ft (91 m) and climbing up to 30 ft (9.1 m), before stalling and crashing to the ground. That crash caused severe damage to the wing-spars and to the fuselage, and resulted in the end of testing. Hall designed a second paper glider, the PG-II, which was to have a fully enclosed fuselage. A scale model was tested in a wind-tunnel at OSU, while the full-sized craft was reported to be under construction in 1971.

Specifications Data from News In EngineeringGeneral characteristics Wingspan: 18 ft (5.5 m) Wing area: 54 sq ft (5.0 m2) Aspect ratio: 6 Airfoil: Joukowski 579 Empty weight: 300 lb (136 kg) Performance

Cruise speed: 41 mph (66 km/h, 36 kn)

References

Illustrations

Worked examples

Example 1 — a first encounter with OSU PG-I

Start with the simplest possible case. Write down what OSU PG-I 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 OSU PG-I 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 OSU PG-I 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 OSU PG-I

In research: OSU PG-I 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 OSU PG-I 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: OSU PG-I is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1970s United States experimental aircraft, Aircraft first flown in 1970, Aircraft with skid landing gear, so understanding it makes those chapters shorter.
In everyday life: Look for OSU PG-I 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 OSU PG-I in 20 minutes

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

Frequently asked questions

What is OSU PG-I in simple terms?

The PG-I was an experimental glider built by a team of Ohio State University undergraduates, and was notable for being constructed entirely of paper and cardboard. Background Prompted by a 1970 paper airplane contest jointly sponsored by the Columbus Dispatch newspaper and the Columbus-based Center…

Why does OSU PG-I 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 OSU PG-I?

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 OSU PG-I.