rotor blade

noun

, Aeronautics.

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First recorded in 1930–35

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The flight had been delayed for a little more than a week when a test of the rotor blades showed problems.

On April 8 and 9, Ingenuity unfolded its rotor blades and tested their ability to spin.

In the wee hours on April 19, the helicopter spun its rotor blades and ascended into the thin Martian air.

On April 8 and 9, Ingenuity unfolded its rotor blades and tested their ability to spin in preparation to take to the air.

After trouble-shooting the software problem and retesting the rotor blades April 16, the flight got a green light for April 19.

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