A comparison of rapid prototyping techniques used for wind tunnel model fabrication

For faster new product introduction aerospace companies are interested in reducing the time it takes to make wind tunnel models. The increased capabilities of rapid prototyping technologies has made them attractive for this purpose. A study was done of rapid prototyping technologies and their ability to make components for wind tunnel models in a timely and cost effective manner. Components and corresponding fabrication technologies were put into three categories: non-structurally loaded, lightly loaded and highly loaded according to the stress endured during wind tunnel tests, Rapid prototyping technologies were found capable for non-structurally loaded parts, but numerically controlled machining was still best for any part enduring significant loads.