Flight mechanic and aerodynamic aspects of extremely large dihedral in birds

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

Flight mechanic and aerodynamic properties resulting from extremely large dihedral which birds can show are treated, with reference made to a realistically modeled wing of a pigeon. For determining the force and moment characteristics, a sophisticated aerodynamic method capable of coping with complex wing geometries is used. It is shown that extremely large dihedral has a significant effect on the lift and drag. This yields a correspondingly great influence on the flight performance in terms of the glide angle and sinking speed, particularly in low speed flight. Furthermore, it is shown that the rolling moment due to sideslip which is an important factor for lateral stability is influenced by extremely large dihedral to a high degree. As an extension to the presented numerical data for the flight performance and lateral stability of the pigeon, an analytical treatment is developed to achieve results of general nature.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages400-411
Number of pages12
ISBN (Print)1563478900, 9781563478901
DOIs
StatePublished - 2007
Event45th AIAA Aerospace Sciences Meeting 2007 - Reno, NV, United States
Duration: 8 Jan 200711 Jan 2007

Publication series

NameCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
Volume1

Conference

Conference45th AIAA Aerospace Sciences Meeting 2007
Country/TerritoryUnited States
CityReno, NV
Period8/01/0711/01/07

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