Theoretically predicted amplification characteristics of Tollmien-Schlichting and crossflow disturbances are correlated with experimental data on transition location. A modified version of the MACK linear stability programm was used to analyze two specific cases: an unswept seilplane wing of high qualitiy surface finish in free flight at low Reynolds number and a swept wing section in a low turbulence wind tunnel. For the sailplane wing, where transition was caused by Tollmien-Schlichting type instability, the amplification factor corresponding to transition was found to be about e15. For the swept wing model, where transition was caused by crossflow instability, the amplification factor corresponding to transition was about e12. (DePo)
Amplification factors at transition on an unswept wing in free flight and on a swept wing in wind tunnel
Verstaerkungsfaktor fuer den Uebergang nichtumstroemter Fluegel bei freiem Flug und umstroemter Fluegel in Windkanalversuchen
AIAA-Papers ; 1-17
1979
17 Seiten, 25 Bilder, 10 Quellen
Conference paper
English