Object-oriented unsteady vortex lattice method for flapping flight

Tracy E. Fritz, Lyle Norman Long

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

The unsteady vortex lattice method is used to model the oscillating plunging, pitching, twisting, and flapping motions of a finite-aspect-ratio wing. Its potential applications include design and analysis of small unmanned air vehicles and in the study of the high-frequency flapping flight of birds and other small flyers. The results are verified by theory and, in the plunging and pitching cases, by experimental data. The model includes free-wake relaxation, vortex stretching, and vortex dissipation effects and is implemented using object-oriented computing techniques. The results show that the method is capable of accurately simulating many of the features of complex flapping flight.

Original languageEnglish (US)
Pages (from-to)1275-1290
Number of pages16
JournalJournal of Aircraft
Volume41
Issue number6
StatePublished - Nov 1 2004

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Vortex flow
Birds
Stretching
Aspect ratio
Air

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

Cite this

Fritz, T. E., & Long, L. N. (2004). Object-oriented unsteady vortex lattice method for flapping flight. Journal of Aircraft, 41(6), 1275-1290.
Fritz, Tracy E. ; Long, Lyle Norman. / Object-oriented unsteady vortex lattice method for flapping flight. In: Journal of Aircraft. 2004 ; Vol. 41, No. 6. pp. 1275-1290.
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Fritz, TE & Long, LN 2004, 'Object-oriented unsteady vortex lattice method for flapping flight', Journal of Aircraft, vol. 41, no. 6, pp. 1275-1290.

Object-oriented unsteady vortex lattice method for flapping flight. / Fritz, Tracy E.; Long, Lyle Norman.

In: Journal of Aircraft, Vol. 41, No. 6, 01.11.2004, p. 1275-1290.

Research output: Contribution to journalArticle

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