Turbine blade with configured stalk

Details Turbine blade with configured stalk Turbine blade with configured stalk

1974-07-22

1976-04-27

Lanham, C. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291568B, 416 2, 416219R, 415 9, B23P 1500, B23P 1502

Patent

active

039523918

ABSTRACT:
A turbine blade has a hole through the blade stalk and a controlled area in the stalk cross section on each side of the hole to assure that the blade will separate at the stalk upon over-speed of the turbine wheel. The hole is drilled and reamed and the hole surface is finally machined by chemical milling to eliminate stress risers while maintaining a controlled cross-sectional area to ensure that with selected wheel and blade materials, the blades will separate and reduce the speed of the turbine wheel.

REFERENCES:
patent: 2493461 (1950-01-01), MacConnell
patent: 2684831 (1954-07-01), Grantham
patent: 2965355 (1960-12-01), Spaeth
patent: 2985426 (1961-05-01), Hunter et al.
patent: 3050282 (1962-08-01), Allen et al.
patent: 3832090 (1974-08-01), Matto
patent: 3858290 (1975-01-01), Albani

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