The Suitability of Selected Multidisciplinary Design and Optimization Techniques to Conceptual Aerospace Vehicle Design

Show full item record

Please use this identifier to cite or link to this item:

Title: The Suitability of Selected Multidisciplinary Design and Optimization Techniques to Conceptual Aerospace Vehicle Design
Author: Olds, John R.
Abstract: Aerospace vehicle conceptual design is dominated by interactions among various traditional engineering disciplines. Aerodynamics, propulsion, performance, weights, sizing, and others are usually highly coupled, and complete vehicle analysis requires an iterative process with efficient methods of communication among the disciplines. Progress to computerize the analysis process has been fast in recent years, producing analysis tools such as NASA-Langley's AVID and EASIE. Given a configuration, the capability exists to quickly analyze it in order to determine its overall characteristics and performance. However, the vehicle designer/ integrator still largely depends on intuition to make systems level changes to the configuration and components in order to improve or optimize the overall design. "What if" studies are typically performed by perturbing the design variables one at a time in an attempt to locate a better design. A complete reanalysis of the entire system is then required for each variable change. This method is a time consuming process that may or may not lead to a more desirable vehicle design. Several mathematically based design techniques have recently emerged that could help the system designer make necessary improvements. These new methods serve to bridge the gap between analysis and design. This paper attempts to give a brief overview of four such techniques, system decomposition, sensitivity analysis, Taguchi methods, and for comparison, classical optimization. References to examples of successful uses of each technique are provided. The goal of this paper is to assess the pros and cons of each technique and their applicability to aerospace vehicle conceptual design.
Description: 4th AIAA/USA/NASA/OAI Symposium on Multidisciplinary Analysis and Optimization Cleveland, OH, September 1992.
Type: Paper
Date: 1992-09
Relation: SSDL ; AIAA 92-4791
Publisher: Georgia Institute of Technology
Subject: Multi-disciplinary optimization/analysis
Mathematically based design techniques
Sensitivity analysis
System decomposition
Taguchi method

All materials in SMARTech are protected under U.S. Copyright Law and all rights are reserved, unless otherwise specifically indicated on or in the materials.

Files in this item

Files Size Format View
aiaa_92-4791.pdf 423.3Kb PDF View/ Open

This item appears in the following Collection(s)

Show full item record