Engine modularity
First Claim
Patent Images
1. In a turbine engine:
- a low pressure compressor casing,a low pressure rotor within the casing,an intermediate stout attached to the downstream end of said casing and having a bearing support structure extending forwardly from the strut within the casing and rotor,a bearing on said support for said low pressure rotor,a high pressure compressor rotor downstream of the strut,a bearing structure at the inner portion of the strut to support the high pressure rotor within this strut, said bearing having an axially slidable connection with the strut,a low pressure shaft within the high pressure compressor rotor and extending forwardly therefrom,a stub shaft having a splined connection with the low pressure shaft and with the low pressure rotor adjacent to its forward end to provide for axial assembly of the stub shaft within the engine,means for removably securing said stub shaft to said low pressure shaft at the forward end of said low pressure shaft, said securing means being accessible within the stub shaft, andsecuring bolts to hold said bearing structure axially within the strut, said bolts being accessible through the low pressure rotor when the stub shaft is removed from within the compressor.
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Accused Products
Abstract
The low pressure compressor and fan together with the intermediate case are removable as a unit from the core engine by removal of the nose cone and a stub shaft at the front of the low pressure turbine shaft and at the ID of the fan hub (50) to provide access to attachment bolts at the inner portion of the intermediate case which holds the bearing for the high pressure rotor in position within the intermediate case after assembly of the engine.
61 Citations
8 Claims
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1. In a turbine engine:
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a low pressure compressor casing, a low pressure rotor within the casing, an intermediate stout attached to the downstream end of said casing and having a bearing support structure extending forwardly from the strut within the casing and rotor, a bearing on said support for said low pressure rotor, a high pressure compressor rotor downstream of the strut, a bearing structure at the inner portion of the strut to support the high pressure rotor within this strut, said bearing having an axially slidable connection with the strut, a low pressure shaft within the high pressure compressor rotor and extending forwardly therefrom, a stub shaft having a splined connection with the low pressure shaft and with the low pressure rotor adjacent to its forward end to provide for axial assembly of the stub shaft within the engine, means for removably securing said stub shaft to said low pressure shaft at the forward end of said low pressure shaft, said securing means being accessible within the stub shaft, and securing bolts to hold said bearing structure axially within the strut, said bolts being accessible through the low pressure rotor when the stub shaft is removed from within the compressor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification