CFD Based Determination of Aerodynamic Effects on Birds with Extremely Large Dihedral

Gottfried Sachs, Mochammad Agoes Moelyadi

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Using a sophisticated aerodynamic method, the effects of extremely large dihedral on the aerodynamic characteristics of birds are determined. With this method, it is possible to generate solutions for the addressed aerodynamic problem, which shows a high complexity due to interference effects caused by dihedral and pronounced 3-dimensional flow properties as well as due to complex wing geometries. From the obtained results it follows that extremely large dihedral has substantial effects on the aerodynamic force characteristics. There are significant changes in the lift, the drag and the side force, thus affecting the flight performance. Furthermore, the obtained results show that the aerodynamic rolling and yawing moment characteristics are influenced by extremely large dihedral to a high degree. This is a significant outcome for lateral-directional stability because the aerodynamic rolling and yawing moment characteristics have a determinative influence here.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalJournal of Bionic Engineering
Volume7
Issue number1
DOIs
StatePublished - Mar 2010

Keywords

  • CFD
  • aerodynamics
  • bird
  • dihedral

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