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A case for multi-level optimisation in aeronautical design

Published online by Cambridge University Press:  04 July 2016

G. M. Robinson  and
A. J. Keane
G. M. Robinson
Affiliation:
British Aerospace/Rolls-Royce University Technology Partnership for DesignDepartment of Mechanical EngineeringUniversity of SouthamptonSouthampton, UK
A. J. Keane
Affiliation:
British Aerospace/Rolls-Royce University Technology Partnership for DesignDepartment of Mechanical EngineeringUniversity of SouthamptonSouthampton, UK
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Abstract

This paper discusses how the inevitable limitations of computing power available to designers has restricted adoption of optimisation as an essential design tool. It is argued that this situation will continue until optimisation algorithms are developed which utilise the range of available analysis methods in a manner more like human designers. The concept of multi-level algorithms is introduced and a case made for their adoption as the way forward. The issues to be addressed in the development of multi-level algorithms are highlighted.

The paper goes on to discuss a system developed at Southampton University to act as a test bed for multi-level algorithms deployed on a realistic design task. The Southampton University multi-level wing design environment integrates drag estimation algorithms ranging from an empirical code to an Euler CFD code, covering a 150,000 fold difference in computational cost. A simple multi-level optimisation of a civil transport aircraft wing is presented.

Type
Research Article
Information
The Aeronautical Journal , Volume 103 , Issue 1028 , October 1999 , pp. 481 - 485
Copyright
Copyright © Royal Aeronautical Society 1999 

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