درباره ما
NACA-RM-A8B11
Wind-tunnel investigation of horizontal tails. II - unswept and 35 degrees swept-back plan forms of aspect ratio 4.5
Year: 1948
Abstract: INTRODUCTION
A systematic investigation of the control surface characteristics, particularly the hinge moment parameters, of semi span horizontal tail surfaces has been undertaken by the NACA to provide experimental results for a comparison with those parameters computed by the lifting surface theory. Reference 1 presented the experimental results obtained from wind tunnel tests of models of aspect ratio 3, and the present report extends the experimental data to include an aspect ratio of 4.5. Comparisons with the theoretical Calculations are not presented herein, but will await the results of further tests and analysis.
Another equally important purpose of the investigation was to evaluate the effects of sweep back on the horizontal tail parameters by a comparison of the results of tests of two models with the same aspect ratio, area, taper ratio, and airfoil section, differing mainly in the angle of sweep back.
A systematic investigation of the control surface characteristics, particularly the hinge moment parameters, of semi span horizontal tail surfaces has been undertaken by the NACA to provide experimental results for a comparison with those parameters computed by the lifting surface theory. Reference 1 presented the experimental results obtained from wind tunnel tests of models of aspect ratio 3, and the present report extends the experimental data to include an aspect ratio of 4.5. Comparisons with the theoretical Calculations are not presented herein, but will await the results of further tests and analysis.
Another equally important purpose of the investigation was to evaluate the effects of sweep back on the horizontal tail parameters by a comparison of the results of tests of two models with the same aspect ratio, area, taper ratio, and airfoil section, differing mainly in the angle of sweep back.
Show full item record
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:47:35Z | |
| date available | 2017-09-04T17:47:35Z | |
| date copyright | 01/01/1948 | |
| date issued | 1948 | |
| identifier other | EPCTUDAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/170824 | |
| description abstract | INTRODUCTION A systematic investigation of the control surface characteristics, particularly the hinge moment parameters, of semi span horizontal tail surfaces has been undertaken by the NACA to provide experimental results for a comparison with those parameters computed by the lifting surface theory. Reference 1 presented the experimental results obtained from wind tunnel tests of models of aspect ratio 3, and the present report extends the experimental data to include an aspect ratio of 4.5. Comparisons with the theoretical Calculations are not presented herein, but will await the results of further tests and analysis. Another equally important purpose of the investigation was to evaluate the effects of sweep back on the horizontal tail parameters by a comparison of the results of tests of two models with the same aspect ratio, area, taper ratio, and airfoil section, differing mainly in the angle of sweep back. | |
| language | English | |
| title | NACA-RM-A8B11 | num |
| title | Wind-tunnel investigation of horizontal tails. II - unswept and 35 degrees swept-back plan forms of aspect ratio 4.5 | en |
| type | standard | |
| page | 40 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1948 | |
| contenttype | fulltext |