Compressors, Gas Turbines and Jet Engines
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Large gas turbines use radial inflow turbines
Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip
Gas turbines use both air and liquid cooling
Gas turbines have their blades similar to steam turbine

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Compressors, Gas Turbines and Jet Engines
For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p₂ is given by

p₂ = Pa p₃/p₁
p₂ = p₁. p₃
P₂ = Pa × p₃/p₁
p₂ = (p₁ + p₃)/2

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