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Robustness of the subsonic doublet lattice method

Published online by Cambridge University Press:  04 July 2016

L. H. van Zyl
L. H. van Zyl*
Affiliation:
Defence Aeronautics Programme, CSIR, Pretoria, South Africa
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Abstract

The subsonic doublet lattice method (DLM) has been the industry standard method for the calculation of unsteady air loads for the past three decades. A recent comparison between the DLM and the subsonic constant pressure panel code ZONA6 suggested that the DLM lacked robustness. However, the DLM code used in the comparison was flawed and not representative of the DLM as such. Results from a contemporary DLM code are presented for the same test cases that were used in the misleading comparison. These new results show that the DLM can produce valid results for all the test cases considered. Where feasible, a comparison is made between results from the present DLM code and the published ZONA6 results.

Type
Research Article
Information
The Aeronautical Journal , Volume 107 , Issue 1071 , May 2003 , pp. 257 - 262
Copyright
Copyright © Royal Aeronautical Society 2003 

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