? asked in 科學及數學其他 - 科學 · 1 decade ago

Why people in helicopter usually wear...

I am ambiguous that why people in the helicopter usually wear a kind of Ear Protector or headphone during the flying. However, what are the actual functions of it?

1 Answer

  • ?
    Lv 7
    1 decade ago
    Favorite Answer

    rotation of propellors make a helicopter move.

    but the rotation of propellors is very noisy.

    so ear protector can protect the ear from damage.

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