This report summarizes a design project initially submitted by General Electric Aviation to address their air atomizing nozzle troubleshooting needs at the Engine Test and Research Development Centre (TRDC) in Winnipeg, MB. Currently, the process to identify defective air atomizing nozzles solely by inspection is overly time consuming and ineffective. Therefore, the project’s objectives were to design a test rig that will streamline the process of identifying defective nozzles, as well as measure the spray pattern output of the nozzles for testing and comparison purposes. The client’s needs for the test rig are for it to provide and control water and air flow to a minimum of one nozzle in a self-contained manner. The water and air flows must be provided at 180qF, and up to a maximum pressure of 100 psig. The rig must also simultaneously collect and record data for the flow properties and the output spray pattern. Project deliverables included in this report are preliminary drawings of the test rig, a parts list with approved vendors, a cost report, and operating instructions. In order to develop a successful design, conceptual design solutions were first generated and screened for feasibility, and then more rigorous part evaluations and design calculations were performed for the selection of the final design components. For both the conceptual and final design stages, the test rig design was broken up into several main categories including the water and air delivery systems, the heating and insulation systems, the measurements and control system, and the overall frame assemblies. For the water delivery system, the selected pump and motor combination is an Oberdorfer R103M rotary gear pump coupled to a half-horsepower Baldor CDP3326 DC motor. The water tank capacity is 50 gallons and is installed on casters to be separately portable from the rest of the rig. An adjustable pressure regulator is included to allow for a variable water pressure supply to the nozzle(s) under test. The piping material for both water and air flows is 304 stainless steel. The selected air compressor for the final design of the air delivery system is Atlas Copco’s oil-injected rotary-screw compressor…