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The engine parts that 'fight the laws of the universe'

Image: BBC Business

Every time you fly, an extraordinary feat of endurance occurs inside the aircraft's engines.

Hidden from view inside the sleek outer nacelle are hundreds of little turbine blades that can shrug off enormous mechanical stresses and temperatures exceeding 1,500C.

It is a true engineering marvel. And these hardy blades are not sculpted or cut from their material – they are grown.

During the 1960s, engineers worked out how to take a molten metal alloy, cast it into the shape of a turbine blade, and then cool it very carefully from one end to the other over a matter of hours.

Continue reading at BBC Business

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