Parametric Aerofoil design

Parametric Aerofoil design - Session IT 302-041 Using...

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Proceedings of The 2006 IJME - INTERTECH Conference Session IT 302-041 Using Knowledge-based Solid Modeling Techniques and Airfoil Design Data: A Case Study in Developing an Airfoil Seed Part Generator William D. O’Brien, Michael Chandonais, R. Scott Henderson, Mark Prezbindowski, Nathan W. Hartman, Joseph A. Rasche Purdue University (obrienw@purdue.edu) / Purdue University / Purdue University / Purdue University / Purdue University (nhartman@purdue.edu) / Rolls-Royce Corporation (joe.a.rasche@rolls-royce.com) Abstract This paper details a research project which encompassed the development of corporate best practices surrounding the use of company specific compressor and turbine design data in the generation of solid model geometry. Current solid modeling processes at Rolls-Royce Corporation for compressor and turbine engine airfoil geometry require a great deal of time and are prone to human error in the replacement of CAD geometry when design changes are made. A team of Purdue University students and faculty collaborated with Rolls-Royce Corporation to improve this process using knowledge-based tools within the Unigraphics (UG) NX 2 modeling tool set. A graphical user interface to import and manipulate aero data was developed and tested to ensure that it met design standards and maintained airfoil geometric integrity within the Rolls- Royce environment. Times for airfoil model replacement using the new application were recorded and compared to the previous method. Results demonstrated that the knowledge-based modeling applications had an average of 88.3% time savings as well as allowed for automation of the solid model creation process of the airfoils. Suggestions for integration of such techniques into engineering and technology education are also presented, along with implications for education and industry. Introduction This project represents a project specification undertaken by four students in a senior project course (CGT 411) in the Computer Graphics Technology (CGT) department at Purdue University. This course provides students the opportunity to work in a team-based environment to complete a project for an outside client. The client can represent any combination of the four areas of the CGT department: virtual product integration, construction graphics management, interactive media and imaging, and animation and gaming. Three of the four students on this project were specializing in the virtual product integration area, while the fourth student specialized in interactive media and imaging. They brought a unique blend of technical skills and competencies that included 3D geometric modeling (surface and solid), scripting and programming, technical writing, and prior industrial experience. One of the goals of the CGT 411 course is to have student teams use all of their knowledge acquired in their previous scholastic experience and develop a solution to a client-based problem. In doing so, the students
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Parametric Aerofoil design - Session IT 302-041 Using...

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