14. An engine runs at a constant load at a speed of 480 r.p.m. The crank...

14. An engine runs at a constant load at a speed of 480 r.p.m. The crank effort diagram is drawn to a scale
1 mm = 200 N-m torque and 1 mm = 3.6º crank angle. The areas of the diagram above and below the
mean torque line in sq mm are in the following order:
+ 110, – 132, + 153, – 166, + 197, – 162
Design the flywheel if the total fluctuation of speed is not to exceed 10 r.p.m. and the centrifugal stress
in the rim is not to exceed 5 MPa. You may assume that the rim breadth is approximately 2.5 times the
rim thickness and 90% of the moment of inertia is due to the rim. The density of the material of the
flywheel is 7250 kg/m3.
Make a sketch of the flywheel giving the dimensions of the rim, the mean diameter of the rim and
other estimated dimensions of spokes, hub etc

Solutions

Expert Solution

samet mamat answered 8 months ago

Next > < Previous

Related Solutions

Q1 The crank of a slider mechanism rotates clockwise at a constant speed of 300 rpm....

Q1 The crank of a slider mechanism rotates clockwise at a constant speed of 300 rpm. The crank is 15Q mm and the connecting rod is 60P mm long. Determine: a) Linear velocity and acceleration of the Slider. b) Angular velocity and angular acceleration of the connecting rod, at a crank angle of 45° from inner dead centre position.

single cylinder naturally aspirated engine (CNG) on engine performance based on high-speed high load comparison with...

single cylinder naturally aspirated engine (CNG) on engine performance based on high-speed high load comparison with baseline conditions early ignition late ignition and rich and lean PV graph and p theta comparison how to do with results (already obtained) comparing emissions, MFB ( 10 % 50% 90%).......Analysis if it's more or less the values how to analyze the basic comparisons for eg baseline vs high speed vs high load if the values are more why is it? rich and lean...

The flywheel of a steam engine runs with a constant angular velocity of 180 rev/min. When...

The flywheel of a steam engine runs with a constant angular velocity of 180 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 1.1 h. (a) What is the constant angular acceleration, in revolutions per minute-squared, of the wheel during the slowdown? (b) How many revolutions does the wheel make before stopping? (c) At the instant the flywheel is turning at 90.0 rev/min, what is the tangential component of the...

The flywheel of a steam engine runs with a constant angular velocity of 140 rev/min. When...

The flywheel of a steam engine runs with a constant angular velocity of 140 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 2.6 h. (a) What is the constant angular acceleration, in revolutions per minute-squared, of the wheel during the slowdown? (b) How many revolutions does the wheel make before stopping? (c) At the instant the flywheel is turning at 70.0 rev/min, what is the tangential component of the...

A sailboat runs before the wind with a constant speed of 3.5 m/s in a direction...

A sailboat runs before the wind with a constant speed of 3.5 m/s in a direction 28 ∘ north of west. You may want to review (Pages 89 - 92) . How far west has the sailboat traveled in 22 min? How far north has the sailboat traveled in 22 min?

A boy pushes a load of 1260 N at a constant speed up a 25° inclined...

A boy pushes a load of 1260 N at a constant speed up a 25° inclined plane onto a platform 1.0 m high. If the boy’s maximum force is 300 N parallel to the plane and the coefficient of kinetic friction is 0.4, what must be the length of the plane?

Marla is running clockwise around a circular track. She runs at a constant speed of 2...

Marla is running clockwise around a circular track. She runs at a constant speed of 2 meters per second. She takes 46 seconds to complete one lap of the track. From her starting point, it takes her 12 seconds to reach the northernmost point of the track. Impose a coordinate system with units in meters, the center of the track at the origin, and the northernmost point on the positive y-axis. (Round your answers to two decimal places.) (a) Give...

•A winch is used to slide a 350-kg load at constant speed 3.50 m down a...

•A winch is used to slide a 350-kg load at constant speed 3.50 m down a 27.0° incline. The rope between the winch and the load is parallel to the incline. The coefficient of kinetic friction between the ramp and the load is 0.40. Calculate the force exerted by the winch, the work done by the winch on the load, the work done by the friction force, the work done by the force of gravity, and the net work done...

15. A four stroke oil engine developing 75 kW at 300 r.p.m is to have the...

15. A four stroke oil engine developing 75 kW at 300 r.p.m is to have the total fluctuation of speed limited to 5%. Two identical flywheels are to be designed. The workdone during the power stroke is found to be 1.3 times the average workdone during the whole cycle. The turning moment diagram can be approximated as a triangle during the power stroke. Assume that the hoop stress in the flywheel and the bending stress in the arms should not...

4) Given the following hypothesis: Ho: = 480 H1: = 480 A random sample of 14...

4) Given the following hypothesis: Ho: = 480 H1: = 480 A random sample of 14 observations is selected from a normal population. The sample mean was 488 and the sample standard deviation 8. Using the 0.10 significance level a) State the decision rule. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places) Reject HO when the test statistic is ____ the interval (__ , ___) b) Compute the value of the test...

Subjects