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The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.67 m and 1.01 m, respectively. The respective rotational speeds are
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.67 m and 1.01 m, respectively. The respective rotational speeds are 455 rev/min and 4,140 rev/min. Calculate the speeds of the tips of both rotors.
main rotor | m/s |
tail rotor | m/s |
Compare these speeds with the speed of sound, 343 m/s.
vmain rotor | = | vsound |
vtail rotor | = | vsound |
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