Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259877827
Author: CENGEL
Publisher: MCG
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Chapter 6, Problem 36P
To determine
The blade rotational velocity and the percentage increase in the required power input.
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Figure below shows a link mechanism in which the link OA rotates uniformly in an
anticlockwise direction at 10 rad/s. the lengths of the various links are OA=75 mm, OB-150 mm,
BC=150 mm, CD-300 mm. Determine for the position shown, the sliding velocity of D.
A 45
B
Space Diagram
o NTS (Not-to-Scale)
C
D
I need a detailed drawing with explanation
so
Solle
4
يكا
Pax Pu + 96**
motion is as follows;
1- Dwell 45°.
Plot the displacement diagram for a cam with flat follower of width 14 mm. The required
2- Rising 60 mm in 90° with Simple Harmonic Motion.
3- Dwell 90°.
4- Falling 60 mm for 90° with Simple Harmonic Motion.
5- Dwell 45°.
cam is 50 mm.
Then design the cam profile to give the above displacement diagram if the minimum circle diameter of the
55
---20125
750 X 2.01
1989
Ashaft fitted with a flywheel rotates at 300 rpm. and drives a machine. The torque
required to drive the machine varies in a cyclic manner over a period of 2 revolutions. The torque drops
from 20,000 Nm to 10,000 Nm uniformly during 90 degrees and remains constant for the following 180
degrees. It then rises uniformly to 35,000 Nm during the next 225 degrees and after that it drops to
20,000 in a uniform manner for 225 degrees, the cycle being repeated thereafter.
Determine the power required to drive the machine and percentage fluctuation in speed, if the driving
torque applied to the shaft is constant and the mass of the flywheel is 12 tonnes with radius of gyration of
500 mm. What is the maximum angular acceleration of the flywheel.
35,000
TNM
20,000
10,000
0
90
270
495
Crank angle 8 degrees
720
Chapter 6 Solutions
Fluid Mechanics: Fundamentals and Applications
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