o Impulse Turbine. The construction of the impulse turbine is
illustrated in Figure 127. In this configuration, the area of the inlet and
exit of the turbine blades are made equal. Thus, the velocity of the gas
entering the blade is equal to the exiting velocity (minus frictional losses).
The blades are designed in such a way that the highvelocity gases concentrate
their energies on the center of the blade. The gases then bounce off the blade
at an angle respective to the approach angle producing the force required to
turn the blade.
Figure 127. Impulse Turbine.
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