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NACA-WR-L-380
Wind-tunnel investigation of control-surface characteristics II - a large aerodynamic balance of various nose shapes with a 30-percent-chord flap on an NACA 0009 airfoil
Year: 1941
Abstract: Tests have been made of an NACA 0009 airfoil with a 30-percent-chord flap having a 49.5-percent flap-chord balance with various nose shapes and two gaps. The results have been presented in the form of aerodynamic section characteristics.
These results indicated the flap to be overbalanced when deflected, regardless of nose shape. There was only a slight change in hinge moment with angle of attack. A blunt-nose shape gave the greatest reductions in hinge moment and the smallest increment of drag over that of a plain airfoil. The small gap investigated affected the aerodynamic characteristics only slightly.
These results indicated the flap to be overbalanced when deflected, regardless of nose shape. There was only a slight change in hinge moment with angle of attack. A blunt-nose shape gave the greatest reductions in hinge moment and the smallest increment of drag over that of a plain airfoil. The small gap investigated affected the aerodynamic characteristics only slightly.
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:44:19Z | |
| date available | 2017-09-04T16:44:19Z | |
| date copyright | 01/01/1941 | |
| date issued | 1941 | |
| identifier other | VWUYYDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/107684 | |
| description abstract | Tests have been made of an NACA 0009 airfoil with a 30-percent-chord flap having a 49.5-percent flap-chord balance with various nose shapes and two gaps. The results have been presented in the form of aerodynamic section characteristics. These results indicated the flap to be overbalanced when deflected, regardless of nose shape. There was only a slight change in hinge moment with angle of attack. A blunt-nose shape gave the greatest reductions in hinge moment and the smallest increment of drag over that of a plain airfoil. The small gap investigated affected the aerodynamic characteristics only slightly. | |
| language | English | |
| title | NACA-WR-L-380 | num |
| title | Wind-tunnel investigation of control-surface characteristics II - a large aerodynamic balance of various nose shapes with a 30-percent-chord flap on an NACA 0009 airfoil | en |
| type | standard | |
| page | 23 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1941 | |
| contenttype | fulltext |