The rotor of a gas turbine is rotating at a speed of 6900 rpm when the turbine is shut down. It is...

Question

The rotor of a gas turbine is rotating at a speed of 6900 rpm when the turbine is shut down. It is observed that 4 min is required for the rotor to coast to rest. Assuming uniformly accelerated motion, determine (a) the angular acceleration, (b) the number of revolutions that the rotor executes before coming to rest.

David · Accepted Answer

 
     
0
2
22
0
2
6900 722.57 sec
60
4min 240sec
(a)   
         0 722.57 240
         3.0107 sec
1 1
(b)  = 722.57 240 3.0107 240
2 2
 1 rev
        =86,708 rad 13,

The rotor of a gas turbine is rotating at a speed of 6900 rpm when the turbine is shut down. It is observed that 4 min is required for the rotor to coast to rest. Assuming uniformly accelerated...

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