The diameters of the main rotor and tail rotor of a single engine helicopter are 7 5 5 m and 1 0 4 m , respectively The respective rotational speeds are 4 4 6 rev min and 4 , 1 4 0 rev min Calculate the speeds of the tips of both rotors

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The diameters of the main rotor and tail rotor of a single - engine helicopter are 7 . 5 5 m and 1 . 0

The diameters of the main rotor and tail rotor of a single

-

engine helicopter are

7.55

m and

1.04

,

respectively. The respective rotational speeds are

446

rev

/

min and

4, 140

rev

/

min

.

Calculate the speeds of the tips of both rotors.

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