EXPERIMENTAL INVESTIGATION OF SIDESLIP EFFECT ON FOUR SLENDER DELTA WINGS
Publish place: 11th Conference of Fluid Dynamics
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CFD11_040
تاریخ نمایه سازی: 12 مرداد 1387
Abstract:
The influence of sideslip on flow over four sharp-edged delta wings of different aspect ratios with high sweep angle was investigated experimentally using surface pressure measurements at x/c=0.75. The tests have been carried out at different incidence angles ranging from 0,5,10,15,20 and 30 deg and at angles of sideslip ranging from zero to -15 deg. Various freestream velocity were used ranging from 10m/s to 30m/s corresponding to Reynolds number 1.7 x 10 5 to 5.2 x 10 5 based on root chord. Reynolds number was not found to have significant influence on spanwise surface pressure distribution profile while an increase in the angle of attack suggested an increase in vortex strength which may lead to vortex breakdown. The pressure distribution over lower aspect ratio wings were found to have asymmetric behaviour even at slight sideslip and this asymmetry increased with increasing sideslip angles and angles of attack.
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Authors
G. Behfarshad
PhD in Aerodynamics, gbehfarshad@yahoo.com Aerospace Research Complex, Malek Ashtar University of Technology
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