science

Liberty Wind Turbine

Liberty Wind Turbine 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 Liberty Wind Turbine rather than just read about it. In short: The 2.5 MW Liberty Wind Turbine was the largest wind turbine manufactured in the United States when it was first installed in 2007. It was developed through a partnership with U.S.

Key takeaways

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

Reference excerpt

The 2.5 MW Liberty Wind Turbine was the largest wind turbine manufactured in the United States when it was first installed in 2007. It was developed through a partnership with U.S. Department of Energy and its National Renewable Energy Laboratory for Clipper Windpower.

History The design of the turbine was meant to reduce problems with power train components that have been experienced in other machines. A two-ton crane within the nacelle simplifies maintenance thereby reducing costs. The size and weight of the Liberty allow it to be constructed with crane of the same capacity as used with most 1.5 MW turbines. Commercial sales for the new Liberty turbine started in June 2006. Liberty turbines were placed into service in the first quarter of 2007 at Steel Winds, a wind energy project located on the coast of Lake Erie in Lackawanna, New York, south of the City of Buffalo in Erie County. Sales stopped in 2012 as the model was experiencing problems with power train components that had cost the company hundreds of millions of dollars in warranty repairs.

Technical characteristics Liberty Wind Turbine uses an 80-meter-tall (260 ft) tower as a standard in its design. The rotor diameter varies amongst particular versions of turbines. The diameter for version C89 is 89 meters, 93 meters for version C93, 96 meters for version C96, and 99 meters for C99. Blade lengths are 43.2 m for C89, 45.2 m for C93, 46.7 m for C96 and 48.2 m for C100. Liberty Wind Turbines use 4 generators that have permanent magnets. Each generator delivers 660 kW at 1133 RPM at a voltage of 1350 Vdc.

References

External links Cutaway diagram of Liberty wind turbine

Illustrations

Worked examples

Example 1 — a first encounter with Liberty Wind Turbine

Start with the simplest possible case. Write down what Liberty Wind Turbine 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 Liberty Wind Turbine 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 Liberty Wind Turbine 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 Liberty Wind Turbine

In research: Liberty Wind Turbine 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 Liberty Wind Turbine 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: Liberty Wind Turbine is common in secondary-school and first-year university syllabi. It links to neighbouring topics Wind power in the United States, Wind turbines, so understanding it makes those chapters shorter.
In everyday life: Look for Liberty Wind Turbine 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 Liberty Wind Turbine in 20 minutes

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

Frequently asked questions

What is Liberty Wind Turbine in simple terms?

The 2.5 MW Liberty Wind Turbine was the largest wind turbine manufactured in the United States when it was first installed in 2007. It was developed through a partnership with U.S.

Why does Liberty Wind Turbine 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 Liberty Wind Turbine?

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 Liberty Wind Turbine.