DGLR-Publikationsdatenbank - Detailansicht
Titel:
Investigation ofthe Influence of Surface Waviness on the Laminar-Turbulent Transition using the ELFIN F100-Flight Tests
Autor(en):
G. Schrauf, J. Ponsin
Zusammenfassung:
Within the ELFIN program, a FOKKER 100 aircraft was equipped with a laminar-flow glove. During the first flight tests, the laminar-flow region was smaller than expected. This was attributed to the waviness of the glove surface. The surface was then improved and, with the refinished surface, a larger laminar-flow region resulted. In this paper, we evaluate the results obtained with the original and with the refinished glove using linear stability theory. We show that a bulge which should be tolerable by Carmichaels criterium actually caused early transition, from which we have deduced that the criterium is not rigorous enough. Furthermore, we perform a parametric study of the influence of a bulge by varying its shape, height, and position, and we compare the influence of a bulge with the one of a hollow and a single wave.
Veranstaltung:
9. DGLR-Fach-Symposium, Erlangen, 1994
Medientyp:
Conference Paper
Sprache:
englisch
Format:
21,0 x 29,7 cm, 7 Seiten
Veröffentlicht:
DGLR-Bericht, 1994, 1994-04, Strömungen mit Ablösung; S.55-61; 1994; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn
Preis:
NA
ISBN:
ISSN:
Kommentar:
Klassifikation:
Stichworte zum Inhalt:
aerodynamics, laminar flow, fokker f100 aircraft
Verfügbarkeit:
Bestellbar
Veröffentlicht:
1994
Dieses Dokument ist Teil einer übergeordneten Publikation:
Strömungen mit Ablösung