The results of experimental elaboration of engineering approaches relating to environmental update of combustors for the GTK-10 10 MW, GTG-1500 1.5 MW and GT-100 100 MW gas turbine engines are presented. The combustor update was carried out by a technique of directed dosed air blow into the maximum temperature zone with in the fire space.

The advantages of the technique are as follows:

• feasibility of reduction of Nox concentration in waste gases to 50 ppm;

• simplicity and adaptability to manufacture of the structure;

• no need in changing the design of the engine components and systems;

• short-time outage of the unit at update.

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