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tracie34_19992003

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Due on Nov. 08, 2009
Asked on Nov 06, 2009 at 10:34:03PM

Q:

The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.56 m and 1.01 m, respectively. The respective rotational speeds are 459 rev/min and 4142 rev/min. Calculate the speeds of the tips of both rotors.

main rotor 1 m/s

tail rotor 2 m/s

Compare these speeds with the speed of sound, 343 m/s.

v_{main rotor} / v_sound 3

v_{tail rotor} / v_sound 4

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mellisa

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Posted on Nov 07, 2009 at 01:44:27PM

A:
Preview: ... gle-engine helicopter are 7.56 m and 1.01 m, respectively. The respective rotational speeds are 459 rev/min and 41 ...

The full tutorial is about 81 words long .

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wch1

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Posted on Nov 07, 2009 at 02:44:51PM

A:
Preview: ... 60 rad / s = 48.06 rad / s angular speed of tail rotor, ω2 = 4142 rpm = 4142 * 2π / 60 rad / s = 433 ...

The full tutorial is about 126 words long .