Rolls-Royce Corporation

Bruce Crook

Emily Holdmeyer

Jeffrey F Rhodes

Systems and methods for control of the delivery of contaminates are provided. A conveyor moves contaminate particles from a hopper into an airflow. The contents of a hopper at multiple time points within a sliding window of time are weighted with a scale. A processor applies linear regression to a data set comprising the time points as an independent variable and the weight measurements as a dependent variable, resulting in a determination of a line fitting the data set. A processor determines a current mass flow rate of the contaminate particles from the slope of the line. The processor determines an estimated change in the conveyor motor speed needed to achieve the target mass flow rate, the estimated change determined from a predetermined mapping of flow rates to motor speeds, the estimated change based on the current mass flow rate, the target mass flow rate, and a predetermined fraction.

Control of particle delivery in contamination test rig

System and methods are provided for a contamination test rig that includes a particle injection chamber including a pressure chamber, wherein a hopper, scale, and feeder are inside of the particle injection chamber, and wherein the test valve is disposed in a valve line that runs parallel to a by-pass line. A by-pass valve permits at least a portion of a mixture of air and contaminate particles to flow through the by-pass line instead of through the valve line when the by-pass valve is open, and prevents the mixture of air and contaminate particles from flowing through the by-pass line when closed.

Contamination test rig

In one example, a method including controlling milling of a component via a milling system, the milling system including a spindle, a tool holder coupled to the spindle, the tool holder configured to receive a milling tool; and the milling tool configured to remove at least a portion of the component via milling while the milling tool is rotated by the spindle and tool holder, wherein the milling system is configured to conduct an electrical signal between the milling tool and component during milling of the component when the milling tool is not broken; monitoring the electrical signal conducted between the milling tool and component; and determining whether the milling tool is broken based on the monitored electrical signal.

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Mooresville, IN, United States of America

Bruce Crook