Rig for measuring bladed component mistuning
AssigneeUnited Technologies Corporation
InventorRichard A. Lomenzo
Life of this patent
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Abstract
A rig for studying a component has a component support for mounting the component. A speaker applies sound energy to airfoils in the component. A vibrometer studies the effect of the applied sound on the airfoils. At least two of the vibrometer, the component support, and the speaker are rotatable relative to each other. In a separate feature, a vibrometer for studying the effect of sound energy on airfoils in a component is provided with a vision system. The vision system is operable to identify the exact location at which the laser is studying the effect on the airfoil. Methods are also disclosed.
Claims20
A rig for studying a component with airfoils including:
- a component support for mounting and rotating a component about an axis;
- a speaker to apply sound energy to airfoils in the component;
- a vibrometer positioned off said axis, and for studying the effect of the applied sound on the airfoils;
- and
- wherein at least two of the vibrometer, the component support, and the speaker are rotatable relative to each other.
A rig for studying a component with airfoils including:
- a component support for mounting and rotating a component about an axis;
- a speaker to apply sound energy to airfoils in the component;
- a vibrometer and vision system combination, with said vibrometer applying a beam to said airfoils to measure the effect of the applied sound energy on said airfoils, and said vision system identifying the location of said beam on each said airfoil.
A method of studying a component with airfoils comprising the steps of:
- (a) mounting a component to be studied for rotation about an axis;
- (b) applying sound energy to airfoils in the component;
- (c) a vibrometer studying the effect of the applied sound on the airfoils;
- (d) rotating at least two of the vibrometer, the component, and the speaker relative to each other, and wherein a beam from the vibrometer is mounted to be directed perpendicularly at the airfoil, with the beam being positioned to be spaced from an axis of rotation of the component.
Dependencies are inferred from the claim text.