Calculate the Gear Ratio. The helicopter's engine'soutput shaft rotates at2400rpm and is connected toreduction gearbox.The gearbox's input simple gearhave 20 tooth and the outputsimple gear have 100 tooth.The gearbox's output rotationvelocity is the same as the twohelicopter rotor blades.The average radius of the rotorblade is 2.5m and the lift ofone rotor blade is (0.413) v².2helicopterrotor bladehelicopterrotor headgearboxAverage radius of rotor blade = 2.5m© 2012 Encyclopædia Britannica, Inc.Helicopter Rotor Bladecompressor combustion corechamber turbineoutputshaft2400rpmpowerturbine The 400kg helicopter yaws at level (samealtitude) and makes a circular motion (topview), with a radius of 20m.The resonant frequency of the rotor bladeat 6.7Hz and the flutter speed is 28m/s.Centre ofcircularmotion60°20mFront View20mTop ViewLiftHelicopter

Answered: Image /qna-images/answer/fa6beaef-4470-4c3e-8812-64c208c3091e.jpg

Answered: Calculate the Gear Ratio.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Concept explainers

Question

Calculate the Gear Ratio.

The helicopter's engine's
output shaft rotates at
2400rpm and is connected to
reduction gearbox.
The gearbox's input simple gear
have 20 tooth and the output
simple gear have 100 tooth.
The gearbox's output rotation
velocity is the same as the two
helicopter rotor blades.
The average radius of the rotor
blade is 2.5m and the lift of
one rotor blade is (0.413) v².
2
helicopter
rotor blade
helicopter
rotor head
gearbox
Average radius of rotor blade = 2.5m
© 2012 Encyclopædia Britannica, Inc.
Helicopter Rotor Blade
compressor combustion core
chamber turbine
output
shaft
2400rpm
power
turbine

The 400kg helicopter yaws at level (same
altitude) and makes a circular motion (top
view), with a radius of 20m.
The resonant frequency of the rotor blade
at 6.7Hz and the flutter speed is 28m/s.
Centre of
circular
motion
60°
20m
Front View
20m
Top View
Lift
Helicopter

Expert Solution

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Follow-up Questions

Read through expert solutions to related follow-up questions below.

Follow-up Question

The 400kg helicopter yaws at level (same altitude) and makes a circular motion (top view), with a radius of 20m.
The resonant frequency of the rotor blade at 6.7Hz and the flutter speed is 28m/s.

Calculate the time to complete one circular motion.

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

Calculate the time to complete one circular motion.

How to double the time?

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

Is there vibration experienced by the helicopter?
i. If yes, what caused it and how to reduce this vibration?

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

Calculate the time to complete one circular motion.

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

Calculate the forward velocity of the helicopter.

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

Calculate the force required for circular motion.

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

Calculate the lift generated by the helicopter rotor blade.

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

Calculate the helicopter rotor blade’s rotational speed.

Solution

by Bartleby Expert

SEE SOLUTION

Knowledge Booster

Design of Power Transmission Elements and Power Transmission Systems

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions