Loading...
Please wait, while we are loading the content...
Similar Documents
Aerodynamics of a finite wing with simulated ice
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kerho, M. Khodadoust, A. Bragg, M. B. |
| Copyright Year | 1992 |
| Description | The effect of a simulated glaze ice accretion on the aerodynamic performance of a three-dimensional wing is studied experimentally. Results are reviewed from earlier two-dimensional tests which show the character of the large leading-edge separation bubbles caused by the simulated ice accretion. The 2-D bubbles are found to closely resemble well known airfoil laminar separation bubbles. For the 3-D experiments a semispan wing of effective aspect ratio five was mounted from the sidewall of the UIUC subsonic wind tunnel. The model uses a NACA 0012 airfoil section on a rectangular planform with interchangeable tip and root sections to allow for 0- and 30-degree sweep. A three-component sidewall balance was used to measure lift, drag and pitching moment on the clean and iced model. Fluorescent oil flow visualization has been performed on the iced model and reveals extensive spanwise and vortical flow in the separation bubble aft of the upper surface horn. Sidewall interaction and spanwise nonuniformity are also seen on the unswept model. Comparisons to the computed flow fields are shown. Results are also shown for roughness effects on the straight wing. Sand grain roughness on the ice shape is seen to have a different effect than isolated 3-D roughness elements. |
| File Size | 793557 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930018248 |
| Archival Resource Key | ark:/13960/t22c3xp01 |
| Language | English |
| Publisher Date | 1992-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Pitching Moments Rectangular Wings Airfoils Surface Roughness Glazes Aspect Ratio Nonuniformity Ice Formation Rectangular Planforms Subsonic Wind Tunnels Wings Airfoil Profiles Drag Flow Distribution Wind Tunnel Tests Flow Visualization Leading Edges Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
