| 摘要 |
583,022. Gas turbines. WHITTLE, F. Dec. 19, 1939, No. 32477. [Class 110 (iii)] The walls of the rotor of a gas turbine are cooled by a flow of air induced by running blades 15 carried by the rotor in co-operation with outer fixed blades 13 which secure a radial delivery of the air. On the inlet side of the turbine, air enters by an annular duct 10 and is discharged through a duct 11 and pipe 16 as a supply of useful warm air. The air is delivered by the blades 13 at a pressure sufficient to prevent entry of the working gas into the air stream. The blades on the exhaust side, which are optional, draw air in through an orifice 8b and discharge it into the turbine exhaust. The turbine may be part of a jet propulsion plant as described in Specification 456,980, [Group XXXIII]. According to the Provisional Specification, the cooling air may be used to augment the propulsion jet, or, to drive auxiliary apparatus.
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