Aerodynamische Interferenzeffekte beim Formationsflug von Vögeln

@article{Hummel2005AerodynamischeIB,
  title={Aerodynamische Interferenzeffekte beim Formationsflug von V{\"o}geln},
  author={Dietrich Hummel and Markus Beukenberg},
  journal={Journal f{\"u}r Ornithologie},
  year={2005},
  volume={130},
  pages={15-24}
}
In ebenen Flugformationen von Vögeln tritt bei den in der Natur beobachteten geringen Abständen der einzelnen Individuen eine beträchtliche Leistungsersparnis auf, die infolge aerodynamischer Beeinflussung zustande kommt. Durch Versuchsflüge mit zwei Flugzeugen vom Typ DO-28 wurde gezeigt, daß diese auf Grund aerodynamischer Berechnungen vorhergesagte Energieersparnis tatsächlich auch erflogen werden kann. Nach den derzeitigen Erkenntnissen über den Schlagflug bei Vögeln werden… 
The function of flight formations in Greylag Geese Anser anser; energy saving or orientation?
Twenty five formations of Greylag Geese Anser anser were photographed from immediately below to eliminate perspective distortion, and the lateral and longitudinal displacements of the birds relative
FORMATION FLIGHT AS AN ENERGY-SAVING MECHANISM
TLDR
Comparisons with flight tests on formations of two airplanes show excellent agreement on the benefits of aerodynamic interference, and the local flight power reduction is highest in the inner parts of the formation and decreases towards the apex and the side edges.
Andean Condor Algorithm for cell formation problems
TLDR
According to the results obtained it has been possible to determine that ACA is an algorithm with an outstanding RPD% in relation to the algorithms BAT, MBO and PSO, robust and with a convergence which tends not to be trapped in the local optimums.
Simulation of Dynamic Yaw Stability Derivatives of a Bird Using CFD
TLDR
To determine dynamic yaw stability derivatives of the bird, the simulation of an unsteady flow with a bird model showing a harmonic motion is performed and results show good agreement.
Efficient Parallel Sorting for Migrating Birds Optimization When Solving Machine-Part Cell Formation Problems
TLDR
An efficient parallel version of the Migrating Birds Optimization metaheuristic based on the V-Flight formation of the migrating birds, which is proven to be an effective formation in energy saving is presented.
On the end-of-life state oriented multi-objective disassembly line balancing problem
TLDR
The disassembly line balancing problem, considering the effect of end-of-life states caused by the uncertainty of the structure or the quality of the disassembled products, is addressed and the effectiveness and superiority of the proposed multi-objective hybrid migrating birds optimization algorithm is validated.
Maturity Mismatching and “Market Failure”
The present article is a continuation of the debate two sets of authors (Bagus and Howden vs. Barnett and Block) have been engaging in regarding one type of maturity mismatching: borrowing short and
...
...

References

SHOWING 1-10 OF 17 REFERENCES
Formationsflug ohne Phasenbeziehung der Flügelschläge
  • M. Berger
  • Biology
    Journal für Ornithologie
  • 2005
TLDR
The analysis of moving pictures from Grey-lag goose, Anser anser, White-fronted Goose, Bean Goose, and Goosander demonstrate formation flight without constant phase relationship of wing beats, which appears most probable in which formation flight is caused by best optical contact and least risk of collision.
Die Leistungsersparnis beim Verbandsflug
  • D. Hummel
  • Biology
    Journal für Ornithologie
  • 2005
TLDR
Results of numerical examples are presented, which show the distribution of power reduction on the individuals involved in symmetrical and unsymmetrical vee formations including the flight in a straight line as well as in arbitrarily shaped formations.
Die Leistungsersparnis in Flugformationen von Vögeln mit Unterschieden in Größe, Form and Gewicht
Beim Formationsflug fliegt jeder Flügel in einem Aufwindfeld, das von allen übrigen Flügeln des Verbandes induziert wird. Dadurch entsteht eine Leistungsersparnis für jeden einzelnen Flügel sowie für
Phasenbeziehungen der Flügelschläge von Gänsen während des Verbandflugs in Keilformation
SummaryFilm analysis has demonstrated a precise phase relationship in the wing beat of geese flying in exact “V”-formation. The farther out along the arms of the “V” the geese are located, the later
THE VEE FORMATION OF CANADA GEESE
TLDR
The first determination of the angle between the legs of vee formations of Canada Geese (Branta canadensis) and measurements of the distances between birds in formation are reported.
Energy savings through formation flight? A re-examination of the vee formation
Flugbiophysik von Kleinvögeln
  • D. Bilo
  • Physics
    Zeitschrift für vergleichende Physiologie
  • 2004
Summary1.The technique of high-frequency stereo-photogrammetry was employed in an analysis of a downstroke of Passer domesticus L. in free flight. The mathematical methods used in the analysis are
Formation Flight of Birds
TLDR
Theoretically, 25 birds could have a range increase of about 70 percent as compared with a lone bird, the advantage being more pronounced when there is a tail wind.
Phasenbeziehungen der Flgelschlge von Gnsen whrend des Verbandflugs in Keilformation@@@Phase relationship in the wing beat of geese flying in ?V? formation
  • 1970
...
...