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Aircraft Design

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Submitted By apatel030
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Design faster, better and more naturally with T-Splines
>The complex challenges of aircraft design illustrate the revolutionary benefits of modeling with T-Splines.

Introduction
Schuyler ‘Sky’ Greenawalt is a designer and the owner of School Street Design Company, which specializes in custom and prototype tooling and production of composite structures for the homebuilt and experimental aircraft community. One of his recent projects was a conceptual model for a Formula 1 Reno Racer, a small competitive aircraft designed to compete in the Formula 1 class of air races at speeds of over 200 mph. Aircraft design poses unusual challenges for surface modelers, since the wings and tails need to be very accurate representations of airfoils, but the rest of the surfaces—fuselages and other secondary structures—need to be very smooth and fair. The blends between the two can be particularly difficult to edit and modify. The reason for the difficulty in modeling these surfaces is not the complexity of the design. Airfoil and fuselage profiles and shapes are well understood. Rather, the challenge comes from the inherent difficulty in creating complex shapes using traditional NURBS surfacing; specifically surfaces with varying level of detail, high accuracy requirements and complex blend transitions. Almost every surface and solid modeling application on the market today is based on a technology called non-uniform rational BSplines (NURBS). Not until the availability of T-Splines in the last several years has there been a viable alternative technology for the designer to use. Sky was an early adopter of T-Splines and with this most recent project has transitioned to building 100% of his airplane model using T-Splines. He estimates that for a typical project he has reduced the overall time by 75% or more. This paper explores the key reasons how T-Splines improves…...

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