The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.55 m and 1.04 m, respectively. The respective rotational speeds are 441 rev/min and 4,149 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 =