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NACA-RM-A9D05
Wind-tunnel investigation of horizontal tails V : 45 degree swept-back plan form of aspect ratio 2
Year: 1949
Abstract: INTRODUCTION
A systematic investigation of the control-surface characteristics, particularly the hinge-moment parameters, of horizontal-tail surfaces has been undertaken by the NACA to provide design data and experimental results for comparison with the parameters estimated by the lifting-surface theory.
Experimental results from wind-tunnel tests of models having unswept hinge lines and models having the 0.25-chord lines swept back 35° and having aspect ratios of 3, 4.5 and 6 are presented in have been presented in reference 1, part IV, for a model of aspect ratio 2 having an unswept hinge line and for a two-dimensional model with the NACA 64A010 section which was common to all the models. The purpose of the present report is to provide experimental data for a 45° swept-back model of aspect ratio 2 for design use and for comparison with the results of the model with the unswept hinge line having an aspect ratio of 2. The angle of sweepback for the present model was 45°, instead of the 35° used for other swept models of the series, because the greater sweepback was believed to result in a more acceptable plan form for the aspect ratio of 2.
A systematic investigation of the control-surface characteristics, particularly the hinge-moment parameters, of horizontal-tail surfaces has been undertaken by the NACA to provide design data and experimental results for comparison with the parameters estimated by the lifting-surface theory.
Experimental results from wind-tunnel tests of models having unswept hinge lines and models having the 0.25-chord lines swept back 35° and having aspect ratios of 3, 4.5 and 6 are presented in have been presented in reference 1, part IV, for a model of aspect ratio 2 having an unswept hinge line and for a two-dimensional model with the NACA 64A010 section which was common to all the models. The purpose of the present report is to provide experimental data for a 45° swept-back model of aspect ratio 2 for design use and for comparison with the results of the model with the unswept hinge line having an aspect ratio of 2. The angle of sweepback for the present model was 45°, instead of the 35° used for other swept models of the series, because the greater sweepback was believed to result in a more acceptable plan form for the aspect ratio of 2.
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:03:17Z | |
| date available | 2017-09-04T16:03:17Z | |
| date copyright | 01/01/1949 | |
| date issued | 1949 | |
| identifier other | RQCTUDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/66547 | |
| description abstract | INTRODUCTION A systematic investigation of the control-surface characteristics, particularly the hinge-moment parameters, of horizontal-tail surfaces has been undertaken by the NACA to provide design data and experimental results for comparison with the parameters estimated by the lifting-surface theory. Experimental results from wind-tunnel tests of models having unswept hinge lines and models having the 0.25-chord lines swept back 35° and having aspect ratios of 3, 4.5 and 6 are presented in have been presented in reference 1, part IV, for a model of aspect ratio 2 having an unswept hinge line and for a two-dimensional model with the NACA 64A010 section which was common to all the models. The purpose of the present report is to provide experimental data for a 45° swept-back model of aspect ratio 2 for design use and for comparison with the results of the model with the unswept hinge line having an aspect ratio of 2. The angle of sweepback for the present model was 45°, instead of the 35° used for other swept models of the series, because the greater sweepback was believed to result in a more acceptable plan form for the aspect ratio of 2. | |
| language | English | |
| title | NACA-RM-A9D05 | num |
| title | Wind-tunnel investigation of horizontal tails V : 45 degree swept-back plan form of aspect ratio 2 | en |
| type | standard | |
| page | 46 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1949 | |
| contenttype | fulltext |