Rolls-Royce (1971) Limited

Leonard Stanley Snell

A mechanism for varying the angle of attack of stator vanes of a compressor in a turbo machine. The vanes in each row are all connected to a respective encircling ring. The rings from all the rows of variable stators are connected to a beam which lies along the outside of the casing. The beam is connected at about its middle to a screw jack actuator which is bolted to the casing and one end of the beam is pivotted to the casing with a compound pivot which accommodates the compound movement of the beam caused by the straight line movement of the screw jack actuator.

Variable stator vane actuating mechanism

A gas turbine powerplant which has two compressor parts alternatively connectable: 1. in series for supersonic flight, or, 2. in parallel for subsonic flight and particularly useful at take-off. The compressor parts are co-axial and a valve extends obliquely between them having two positions corresponding to the two alternatives above. In the first position the valve allows series flow and in the second position its obliquity deflects the delivery of the first compressor part out into a bypass duct and allows ambient air into the second compressor part.

Gas turbine power plant having series-parallel valve arrangement

The disclosure of this invention pertains to a bladed rotor for gas turbine engines wherein each blade has a root portion connected to a blade support element spaced radially outwardly from the rim of a single disc and being of greater axial extent than the rim. The element is connected to the rim by a web extending in part radially outside the rim and in part at the sides of the rim.

Bladed rotor for fluid flow machines

The disclosure of this invention relates to a gas turbine engine combustion chamber including a flame tube having holes closed by a filling of a material of lower melting point than the flame tube material so that if in operation the temperature of the tube exceeds that of the filling the latter melt and cooling air can enter the tube through the holes.

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Bristol, United Kingdom

Leonard Stanley Snell