| 摘要 |
1276100 Turbomachine blades ROLLSROYCE Ltd 25 Nov 1969 [16 Dec 1968] 59739/68 Heading FIT Blades 23, e. g. for a compressor of a gas turbine engine, are mounted on a rotor or stator 16 by engagement of generally cylindrical root portions 21 within corresponding recesses 20 with freedom for pivotal movement, the root portions 21 having extensions 24 engaging resilient means. The latter comprises elastomeric balls 25 or inflatable members 26. Relative axial movement between adjacent baldes 23 is prevented by telescopically engaging clapper-like members 30, 31. Pressure fluid may be supplied to a space within the members 30, 31 so as to urge them apart. In a modification each blade aerofoil is not integral with its root portion 21 but is joined thereto by a dovetail connection. |
