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US 9,506,350 B1Granted
Turbine rotor blade of the spar and shell construction
AssigneeS & J Design LLC
InventorRobert L Memmen
Life of this patent
Estimating the term…
Abstract
A turbine rotor blade of the spar and shell construction, where a one piece shell is secured to a hollow spar using a plurality of chordwise extending shear ties that are cast into a space formed between the shell interior and the spar exterior. A fill pipe is inserted into the hollow spar and is used to deliver the liquid retainer material to the hard to reach slots formed in which the shear ties solidify.
Claims12
A process of forming a turbine rotor blade for a gas turbine engine, the process comprising the steps of:
- forming a single piece hollow shell with an outer surface having an airfoil shape and an inner surface having a plurality of chordwise extending slots;
- forming a hollow spar with an outer surface having a plurality of chordwise extending slots;
- placing a fill pipe having a main channel and a plurality of branch channels into positioned within the spar so that the branch channels open into the chordwise extending slots;
- placing the spar and fill pipe within the hollow shell so that the chordwise extending slots form spaces for a shear tie;
- and,
- passing a shear tie forming material through the fill pipe to fill the spaces with a material that solidifies into shear ties to secure the shell to the spar of the turbine rotor blade.
3 more elements
A turbine rotor blade for a gas turbine engine, the turbine rotor blade comprising:
- a single piece shell having an airfoil shape with a pressure side wall and a suction side wall and a tip cap;
- a hollow spar having a similar airfoil shape with a pressure side wall and a suction side wall and a tip end;
- a plurality of chordwise extending slots formed on the shell;
- a plurality of chordwise extending slots formed on the spar;
- the plurality of chordwise extending slots on the shell and the spar forming a plurality of chordwise extending shear tie channels;
- and,
- a shear tie formed from a castable material in each of the chordwise extending shear tie channels.
4 more elements
Dependencies are inferred from the claim text.