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NACA-TN-1738
Wind-tunnel investigation at low speed of the lateral control characteristics of ailerons having three spans and three trailing-edge angles on a semispan wing model
Year: 1948
Abstract: A wind-tunnel investigation has been made of the low-speed lateral. control characteristics of a tapered, low-hag semispan model equip with 20-percent-chord sealed ailerons having spans of 0.954, 0.583, and 0.294 percent of a full-span aileron, each with &ailing-edge angles of 6°, 14°, and 25°. Th9 investigation also included tests with the ailerons unsealed, simulating symmetrical lift-flap configurations having spans of 0.954 and 0.66° percent of a full-span flap. The aileron hinge-moments and pressures over the aileron seal were determined for each of the nine aileron configurations in addition to the Usual lift and lateral-control coefficients.
The results of this investigation, in general, indicated that the existing theoretical method for predicting the slope of the curve of rolling-moment coefficient with aileron deflection clsa for various
spans of aileron gave satisfactory agreement with the experimental results for ailerons having trailing-edge angles of 6° and 14°. The agreement between the experimental and theoretical values of Clsa was poor, however, for the ailerons with a trailing-edge angle of 25°.
The results of this investigation, in general, indicated that the existing theoretical method for predicting the slope of the curve of rolling-moment coefficient with aileron deflection clsa for various
spans of aileron gave satisfactory agreement with the experimental results for ailerons having trailing-edge angles of 6° and 14°. The agreement between the experimental and theoretical values of Clsa was poor, however, for the ailerons with a trailing-edge angle of 25°.
Subject: AILERONS
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:28:52Z | |
| date available | 2017-09-04T15:28:52Z | |
| date copyright | 01/01/1948 | |
| date issued | 1948 | |
| identifier other | NVWTYDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/30061 | |
| description abstract | A wind-tunnel investigation has been made of the low-speed lateral. control characteristics of a tapered, low-hag semispan model equip with 20-percent-chord sealed ailerons having spans of 0.954, 0.583, and 0.294 percent of a full-span aileron, each with &ailing-edge angles of 6°, 14°, and 25°. Th9 investigation also included tests with the ailerons unsealed, simulating symmetrical lift-flap configurations having spans of 0.954 and 0.66° percent of a full-span flap. The aileron hinge-moments and pressures over the aileron seal were determined for each of the nine aileron configurations in addition to the Usual lift and lateral-control coefficients. The results of this investigation, in general, indicated that the existing theoretical method for predicting the slope of the curve of rolling-moment coefficient with aileron deflection clsa for various spans of aileron gave satisfactory agreement with the experimental results for ailerons having trailing-edge angles of 6° and 14°. The agreement between the experimental and theoretical values of Clsa was poor, however, for the ailerons with a trailing-edge angle of 25°. | |
| language | English | |
| title | NACA-TN-1738 | num |
| title | Wind-tunnel investigation at low speed of the lateral control characteristics of ailerons having three spans and three trailing-edge angles on a semispan wing model | en |
| type | standard | |
| page | 53 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1948 | |
| contenttype | fulltext | |
| subject keywords | AILERONS | |
| subject keywords | AIRFOILS | |
| subject keywords | CARRIED | |
| subject keywords | CHARACTERISTICS | |
| subject keywords | CONTROLS | |
| subject keywords | DEVICES | |
| subject keywords | DISTRIBUTION | |
| subject keywords | DRAG | |
| subject keywords | GAP | |
| subject keywords | HINGE | |
| subject keywords | LAL | |
| subject keywords | LATERAL | |
| subject keywords | LOW | |
| subject keywords | MOMENTS | |
| subject keywords | MPH | |
| subject keywords | NACA | |
| subject keywords | PITCHING | |
| subject keywords | PRESSURE | |
| subject keywords | ROLLING | |
| subject keywords | SEALED | |
| subject keywords | TAPERED | |
| subject keywords | TESTS | |
| subject keywords | TUNNEL | |
| subject keywords | WIND | |
| subject keywords | WINGS | |
| subject keywords | WORK | |
| subject keywords | YAWING |