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The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.53 m and 1.05 m, respectively. The respective rotational speeds are 453 rev/min and 4,130 rev/min. Calculate the speeds of the tips of both rotors.
a.
main rotor m/s
tail rotor m/s
b.
Compare these speeds with the speed of sound, 343 m/s
vmain rotor = vsound
vtail rotor = vsound
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