Using the energy of cooling air discharged into the air-gas flow area of a turbine from the nozzle blades and rotor is a means of increasing the effective work of a gas-turbine and the effective efficiency of gas turbines. An increase in relative cooling-air flow rate leads to a relative change not only in the effective efficiency but also the effective work of a turbine. An increase in the difference between the angle of emergence for the gas flow from the cascade and the angle at which cooling air is exhausted from the blades leads to an increase in the relative change in efficiency of a gas turbine engine.
Edited trans. of Korablestroitelnyi Institut, Leningrad. Trudy (USSR) n70 p55-62 1970, by Paul J. Reiff, Jr.