The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.59 m and 1.01 m, respectively. The respective rotational speeds are 457 rev/min and 4,150 rev/min. Calculate the speeds of the tips of both rotors. main rotor 181.75 m/s tail rotor 221.53 m/s Calculate the time (in ms) each rotor takes to complete one revolution. main rotor 0.53 * ms tail rotor 0.65 X ms