Classification instrument

Details Classification instrument Classification instrument

1980-03-25

1983-02-22

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

G01B 520, G01B 728

Patent

active

043744591

ABSTRACT:
A classification instrument adapted for accurately measuring both blocked and open flow area for airfoil or vane elements such as turbine stator vanes having mounting buttresses at each end includes stops for mounting the vane element upon the instrument in a predetermined position established by a plurality of datum points or lines corresponding to the various stops, a plurality of indicators for measuring various points and surfaces upon the vane and providing classification readings from which the open and closed area values for the vane may be determined. A method is also disclosed for classifying or determining the blocked and open areas for such air foil or vane elements.

REFERENCES:
patent: 3102344 (1963-09-01), Herman
patent: 3464119 (1969-09-01), Griggs
patent: 3678585 (1972-07-01), Dabrush
patent: 3832784 (1974-09-01), Samuels
patent: 3959886 (1976-06-01), Griggs
patent: 4222172 (1980-09-01), Mason
"The inspection of Turbine & Compressor Blades"-Sigma-Instrument Co.,12/11/58.
Aircraft Production, "High Speed Blade Checking" Mar. 1950, pp. 73-75.

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