Robust Analysis and Prediction for Integrated Design of Structures (RAPIDS), Phase I

Commercially available software suites such as the Automate Structural Optimization System (ASTROS) and MSC/NASTRAN represent the current industry standard in multidisciplinary design and optimization (MDO) tools. The primary capabilities of these products have remained largely unchanged since their initial release. In the analysis and design of modern aerospace vehicles, the deficiencies of these legacy tools are becoming increasingly clear. The linear aerodynamic methods employed by these tools are not appropriate when transonic flight regimes are considered or when other nonlinearities are present, particularly when these techniques are used to predict flight vehicle performance. Although advances in computational power and numerical techniques present an opportunity to employ higher fidelity methods, the development of new software is proceeding slowly. The effort described in this Phase I proposal describes a means by which nonlinear analytic and experimental data can be used to improve the accuracy of flight vehicle performance predictions by utilizing existing analysis tools. A procedure is presented to integrate a finite element based analysis and design tool with a nonlinear aerodynamic solver and graphical visualization system to provide improved correlation of simulated results with flight test data.

This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.

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