An ornithopter (from
Greek ornithos "bird" and pteron "wing") is an
aircraft that flies by flapping its wings. Designers seek to imitate the flapping-wing flight of
birds,
bats, and
insects. Though machines may differ in form, they are usually built on the same scale as these flying creatures. Manned ornithopters have also been built, and some successful flights have been reported.
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