Journal of Aerospace Science and Technology

Journal of Aerospace Science and Technology

Wind Tunnel Investigation of Pressure Distribution and Transition Position of a Swept 3D Wing

Authors
1 Sharif Univ. of Tech.
2 Sharif
Abstract
Extensive wind tunnel tests are conducted to evaluate surface pressure distribution of a semi span swept wing. The wing section has a laminar flow airfoil similar to NACA 6-series airfoils. The investigations are conducted at various speeds and angles of attack. Surface pressure distribution over the wing upper surface is measured for both chordwise and spanwise sections. Statistical analyses are performed on the data to realize the transition point at each chordwise section. The 3D pressure profiles are compared to the corresponding 2D results at the same conditions. Calculation of the standard deviation, SD, of time variable pressure data shows that SD increases in the transition area and then decreases again when the flow becomes fully turbulent downstream. The measured transition points are further compared with 2D computational results.
Keywords

Volume 7, Issue 2
September 2010
Pages 132-137

  • Receive Date 15 August 2011
  • Accept Date 30 October 2017
  • First Publish Date 30 October 2017