The aircraft industry began using wood - based manufacturing technology in the 80s of the last century, and the previous composites manufacturing only played a small role in the rapid prototyping industry in the aviation industry. The recent trend is that this technology will occupy a strategic position in the entire aerospace industry chain. Including Boeing, Airbus, Lockheed, Martin, Honeywell and Pratt & Whitney have set an example.
        A new generation of aircraft to high performance, high reliability, long life, low cost direction, more and more with the overall structure, the parts tend to be complicated and large-scale, so as to promote the development and application of additional material manufacturing technology. Additional material manufacturing technology from 3D CAD model of parts, without mold production parts directly, can greatly reduce the cost, shorten the development cycle, is an important measure to satisfy modern aircraft rapid low cost development, is also one of the key technologies to meet Aerospace specifications, manufacturing complex metal structure.