Answered: The diameters of the main rotor and…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.61 m and 1.04 m, respectively. The respective rotational speeds are 456 rev/min and 4,150 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.

v_{main rotor}	=	v_sound
v_{tail rotor}	=	v_sound

Expert Solution

Step 1

Given :

d₁ = 7.61 m

d₂ = 1.04 m

w₁ = 456 rev/min = 456(2π/60) = 47.75 rad/s

w₂ = 4150 rev/min = 4150(2π/60) = 434.59 rad/s

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