Multiple section rotor disc

Details Multiple section rotor disc Multiple section rotor disc

1975-12-15

1978-07-25

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Support mounting, carrier or fairing structure

416 95, 416229A, F01D 508

Patent

active

041026039

ABSTRACT:
A design technique, method and apparatus for containing failure of the rotors of axial flow fluid machines. A rotor disk is constructed of at least three disk sections. Each disk section is shaped such that the loading on that section will be distributed in an optimum manner from the rim to the hub of the disk. To prevent crack propagation from one disk section to another, and to minimize structural weaknesses in the disk sections, the live disk sections are bolted together in a single bolt circle. In order to reduce overall disk weight while maintaining a maximum level of failure containment, the inner disc sections are made thicker than the outer disk sections. Embodiments for the fan, compressor and turbine rotor sections of a gas turbine engine are disclosed.

REFERENCES:
patent: 2657008 (1953-10-01), Atkinson
patent: 2918252 (1959-12-01), Haworth
patent: 3281116 (1966-10-01), Keenan
patent: 3588277 (1971-06-01), Howald
patent: 3609059 (1971-09-01), Wagle
patent: 3982852 (1976-09-01), Andersen et al.

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