FIELD: engines and pumps.
SUBSTANCE: before motoring and starting the engine the hot air is supplied from an external auxiliary gas turbine engine or from a ground facility in the cooling system of the turbine and is heated for 3…6 minutes, after which the engine is started. The parameters of the supplied hot air correspond to the parameters of the air supplied for cooling the turbine of this engine. The supply of hot air is switched off after the engine is switched over to the "low gas" mode.
EFFECT: increased engine operational life by the number of starts, of low-cycle fatigue respectively, by reducing the temperature difference in the blades and discs of the turbine due to their preheating with hot air.
3 dwg
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