Viscous Three-Dimensional Flow Separations from High-Wing Propeller- Turbine Nacelle Models
Abstract
This paper describes an investigation of viscous three-dimensional flows on high-wing nacelle configurations which are typical of current commuter aircraft. Flow visualization on two nacelle configurations was used to depict the viscous vortex separations in the underwing junction, the nacelle afterbody, and the wing upper surface over the central region. The surface shear stress patterns, although complex, were composed of combinations of elementary three- dimensional viscous flows and free vortices which stream downwind. A strong vortex flow was produced over the top of the wing by the use of leading edge extensions along the forward portion of the nacelle. Observations were also made of the effects of a propeller slip-stream and the distortion of this propulsive flow by the mutual interference of the wing and nacelle.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1983
- Accession Number
- ADP002255
Entities
People
- R. H. Wickens