A Rapid Geometry Engine for Preliminary Aircraft Design

A rapid geometry engine (RAGE) has been developed to allow for preliminary design analysis without labor-intensive CAD support. The geometry tool builds complex aircraft configurations using a component-based approach. Basic algorithms for creating the primary components are presented and discussed. Examples of many widely varying geometry models are shown. A select geometry model is analyzed with several aerodynamic analysis methods ranging in fidelity to further demonstrate the versatility of the geometry tool. Example uses of the tool in optimization problems are also presented. Future plans for the geometry engine are also discussed. I. Background Preliminary aircraft design methods have advanced tremendously in the past few decades due to rapidly developing computer technology and overall algorithmic improvements. Analysis methods that were once considered only feasible for advanced and detailed design are now available and even practical at the preliminary design stage. Rapid analysis methods also allow for simple and even multidisciplinary optimization methods to be utilized in preliminary design. To fully exploit these advanced analysis and optimization methods, the geometric model of the aircraft must be easily and rapidly generated so as not to inhibit the preliminary design process.