Abstract
A dye-injection flow visualization technique has been used to study the flow patterns of a simplified aircraft model, the effects of side roughness ribs and "0" type with side roughness ribs on the flow patterns have been observed in details. The experimental results indicate that the range of the angle of attack influenced by the Reynolds number in the pitching moment curves is related to the angle of attack at which the nose vortex begins to beat the canopy until it mixes in the front of the canopy. In this water tunnel experiments, the results obtained at flow velocity of 20 cm/s for the roughness height 0.8 mm can be used to explain the scatter of the pitching moment curves obtained in the wind tunnel measurements.
| Original language | English |
|---|---|
| Pages (from-to) | 1-3 |
| Number of pages | 3 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 28 |
| Issue number | 1 |
| State | Published - Feb 2002 |
Keywords
- Flow visualization
- Roughness ribs
- Separated flow
- Simplified aircraft model
- Vortex flow
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