science

Lesher Teal

Lesher Teal 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 Lesher Teal rather than just read about it. In short: The Lesher Teal is a home built experimental aircraft that at one point held seven Federation Aeronautique Internationale (FAI) class is C-l.a records for speed and distance. Design and development The Teal was designed to beat the Federation Aeronautique Internationale (FAI) class is C-l.a records for speed and distance.

Key takeaways

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

Reference excerpt

The Lesher Teal is a home built experimental aircraft that at one point held seven Federation Aeronautique Internationale (FAI) class is C-l.a records for speed and distance.

Design and development The Teal was designed to beat the Federation Aeronautique Internationale (FAI) class is C-l.a records for speed and distance. Construction started in 1962. The aircraft was configured as an all-aluminum single-place aircraft with retractable landing gear, powered by a 100 hp Continental O-200 engine driving a 64-inch Hartzell ground-adjustable propeller. By 28 April 1965, the airframe was complete. On that day, Lesher made the aircraft's first flight at Willow Run Airport. That August, he flew Teal to the 1965 EAA Fly-In in Rockford, Illinois, where he won an award from the EAA for his achievements.

Operational history After two years of testing the Teal, Lesher flew the aircraft, on 22 May 1967, to a new 500 km closed-course Class C1a speed record of 181.55 mph. On 30 June 1967, he set a new 1,000 km closed-course speed record of 169.20 mph and on 220 October 1967, he set a new 2,000 km closed-course speed record of 141.84 mph. On 6 May 1968, while flying Teal near Ann Arbor, he experienced a loss of power. Not being able to make it to a nearby airport, he made an emergency landing in a field. The airplane was badly damaged, but he was unhurt. After rebuilding Teal, on 9 September 1970, he set a new Class C1a closed-circuit distance record of 1554.29 miles. Later, on 29 September 1973 he set a new Class C1a 3 km speed record of 173.101 mph and the next day he set a new 15–25 km speed record of 169.134 mph. Finally, on 2 July 1975, he set a new Class C1a record for distance in a straight line by flying 1,835.459, flying from Florida to Arizona. He continued to fly Teal for many more years, but never made any more record attempts. For his record-breaking flights, he won the FAI's Louis Bleriot Medal four times and was inducted in the Michigan Aviation Hall of Fame in 1988. The Teal was donated to the EAA Airventure Museum in 2002.

Specifications (Lesher Teal) Data from Jane's All the Worlds Aircraft 1967–68.General characteristics Length: 19 ft 3 in (5.87 m) Wingspan: 23 ft 10 in (7.26 m) Height: 5 ft 8 in (1.73 m) Wing area: 60.0 sq ft (5.57 m2) Aspect ratio: 9.6:1 Airfoil: NACA 653618 Empty weight: 685 lb (311 kg) Max takeoff weight: 1,102 lb (500 kg) Fuel capacity: 60 US gal (50 imp gal; 230 L) Powerplant: 1 × Continental O-200A-A air-cooled four-cylinder horizontally-opposed piston engine, 100 hp (75 kW) Propellers: 2-bladed Hartzell, 5 ft 4 in (1.63 m) diameter (ground-adjustable pusher) Performance

Cruise speed: 160 kn (180 mph, 290 km/h) (70% power) Stall speed: 70 kn (80 mph, 130 km/h) Range: 1,700 nmi (2,000 mi, 3,200 km)

Illustrations

Worked examples

Example 1 — a first encounter with Lesher Teal

Start with the simplest possible case. Write down what Lesher Teal 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 Lesher Teal 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 Lesher Teal 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 Lesher Teal

In research: Lesher Teal 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 Lesher Teal 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: Lesher Teal is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1960s United States experimental aircraft, Aircraft first flown in 1965, Aircraft with fixed tricycle landing gear, so understanding it makes those chapters shorter.
In everyday life: Look for Lesher Teal 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 Lesher Teal in 20 minutes

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

Frequently asked questions

What is Lesher Teal in simple terms?

The Lesher Teal is a home built experimental aircraft that at one point held seven Federation Aeronautique Internationale (FAI) class is C-l.a records for speed and distance. Design and development The Teal was designed to beat the Federation Aeronautique Internationale (FAI) class is C-l.a records…

Why does Lesher Teal 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 Lesher Teal?

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 Lesher Teal.