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Hi, I'm RJ, with more KSNN technology news you can use.

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What is a wind tunnel?

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A wind tunnel is a tube-like structure used to test different types of airplanes.

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Wind tunnels make air move past an airplane, just like it's really flying through the air.

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A big fan usually makes the wind that moves past the plane.

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Wow, wind tunnels must really be big to hold a whole plane.

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NASA has some of the largest wind tunnels in the world.

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NASA even has small tunnels to test scale model planes before the real aircraft is built.

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This saves a lot of time and money.

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Wind tunnels work so well that no aircraft is built or flown until tested in a wind tunnel.

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Can they test anything else besides aircraft in wind tunnels?

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Yes, they even test race cars and Mars spacecrafts.

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To find out more about wind tunnels, check out our website.

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Until next time, I'm RJ, with more cool technology news you can use.