Aircraft

Main resource: Aerospace engineering

The prototype Curtiss XSB2C-1 Helldiver.

An aircraft is vehicle capable of flight. There are many different kinds of aircraft.

Some aircraft keep in the sky by moving air over their wings, including aeroplanes (airplanes), helicopters, and gliders. Others, like balloons and airships, float.

Most aircraft use engine power while others use no power, such as gliders and balloons. Few aircraft use muscle power.

Big aeroplanes that transport people are called airliners. Airliners can fly at more than 850 km/h (530 mph). Less than 100 years ago, the quickest ships needed more than seven days to travel across the Atlantic Ocean because it is 4,800 km (3,000 miles) wide. Now airliners need less than seven hours to travel across the Atlantic Ocean. Airliners are the quickest way to travel. Airliners can fly over mountains and bad weather. Airliners have complex technology to make them fly quickly, safely, and for less money.

Fighting aircraft fly at 3,200 km/h (2,000 mph).

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