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Can tutor explain clearly and step by step by explanation on each questions a)Calculate the Gear Ratio. b)Calculate the helicopter rotor blade’s rotational speed. c)Calculate the lift generated by the helicopter rotor blade. d)Calculate the force required for circular motion.

Can tutor explain clearly and step by step by explanation on each questions a)Calculate the Gear Ratio. b)Calculate the helicopter rotor blade’s rotational speed. c)Calculate the lift generated by the helicopter rotor blade. d)Calculate the force required for circular motion.

Elements Of Electromagnetics
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
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Can tutor explain clearly and step by step by explanation on each questions

a)Calculate the Gear Ratio.


b)Calculate the helicopter rotor blade’s rotational speed.


c)Calculate the lift generated by the helicopter rotor blade.


d)Calculate the force required for circular motion.


e)Calculate the forward velocity of the helicopter.


f)Calculate the time to complete one circular motion.


g)Is there vibration experienced by the helicopter?

i.If yes, what caused it and how to reduce this vibration?

h)How to double the time for (f)?

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
Transcribed Image Text: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
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. 1 2 helicopter rotor blade helicopter rotor head Average radius of rotor blade = 2.5m © 2012 Encyclopædia Britannica, Inc. compressor combustion core chamber output shaft Rotor | helicopter part | Britannica gearbox Helicopter Rotor Blade 2400rpm GLOBOF power turbine turbine
Transcribed Image Text: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. 1 2 helicopter rotor blade helicopter rotor head Average radius of rotor blade = 2.5m © 2012 Encyclopædia Britannica, Inc. compressor combustion core chamber output shaft Rotor | helicopter part | Britannica gearbox Helicopter Rotor Blade 2400rpm GLOBOF power turbine turbine
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can explain D,E,F more clearly also 

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Can tutor explain C more clearly on the step as I do not see that formula before 

So far this the formula I learnt in the picture for velocity and 

  • s = Rθ
  • v = Rω
  • at = Rα
S = 1 (u + v)t z v = u + at S s = ut + 1/2 at ² v² = u² + 2as 1 = 2 (W₁ + W₂)t 0 = W2 W₂ = W₁ + at 0 = w₁t + ½ at² W₂²= w₁² + 2a0 ω12 2αθ 2
Transcribed Image Text:S = 1 (u + v)t z v = u + at S s = ut + 1/2 at ² v² = u² + 2as 1 = 2 (W₁ + W₂)t 0 = W2 W₂ = W₁ + at 0 = w₁t + ½ at² W₂²= w₁² + 2a0 ω12 2αθ 2
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continue others

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