MANY ENGINEERING PROBLEMS have more than one solution. Application Engineers, however, are asked to find the one optimal solution given a list of variables and possibilities. In our industry, we are often called upon to recommend and validate our choice for the best media propulsion system-airblast or wheelblast-for the customer's application. Very often, either type will work for their application, and each has its own inherent advantages and shortcomings. While I've had the luxury of being able to offer both airblast and wheelblast solutions since the company I represented manufactured both systems, I still needed to recommend one or the other to my customers.
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