1-Rotor loss coefficients usually lie in the range from 0.063 to 0.235

2-The conventional way to determine total-to-total efficiency is to first find total-to-static efficiency and then use that value in calculating total-to-total efficiency.

3-Total-to-static efficiency is relevant when use will be made of the kinetic energy of the exhaust gasses.

4-The stagnation enthalpy is reduced across the diffuser because of the gain in entropy.

5-The trigonometry term cosec x is the same as 1/cos x .

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