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NACA-TN-1404
Collection of test data for lateral control with full-span flaps
Year: 1948
Abstract: INTRODUCTION
One of the problems arising from the increased speed and wing loading of modern airplanes is the difficulty of obtaining high lifts for landing and take-off without impairing lateral control. If conventional aileron arrangements are used to satisfy the lateral-control requirements, the flap span is necessarily limited and the problem of obtaining the lift required for take-off or landing becomes quite important. When full-span flaps are used to obtain the desired lift coefficient for the airplane, the designer is faced with the problem of including and properly locating a lateral-control device on the airplane which will be effective in all flight configurations and have characteristics that will not be deleterious or objectionable.
The purpose of the present paper is to give the most pertinent part of the experimental data on the characteristics of lateral-control devices for use with full-span or almost full-span flaps. The data are, necessarily, greatly condensed and some data have been given in a form different from the original source. Additional information on any particular model may be obtained from the reference. (See reference 1 to 25 and table I.)
Data on conventional balanced ailerons have been reported previously in reference 26, and a collection of fairly large-chord control-surface data has been given in reference 27.
One of the problems arising from the increased speed and wing loading of modern airplanes is the difficulty of obtaining high lifts for landing and take-off without impairing lateral control. If conventional aileron arrangements are used to satisfy the lateral-control requirements, the flap span is necessarily limited and the problem of obtaining the lift required for take-off or landing becomes quite important. When full-span flaps are used to obtain the desired lift coefficient for the airplane, the designer is faced with the problem of including and properly locating a lateral-control device on the airplane which will be effective in all flight configurations and have characteristics that will not be deleterious or objectionable.
The purpose of the present paper is to give the most pertinent part of the experimental data on the characteristics of lateral-control devices for use with full-span or almost full-span flaps. The data are, necessarily, greatly condensed and some data have been given in a form different from the original source. Additional information on any particular model may be obtained from the reference. (See reference 1 to 25 and table I.)
Data on conventional balanced ailerons have been reported previously in reference 26, and a collection of fairly large-chord control-surface data has been given in reference 27.
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:08:22Z | |
| date available | 2017-09-04T15:08:22Z | |
| date copyright | 01/01/1948 | |
| date issued | 1948 | |
| identifier other | LKSSYDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/6216 | |
| description abstract | INTRODUCTION One of the problems arising from the increased speed and wing loading of modern airplanes is the difficulty of obtaining high lifts for landing and take-off without impairing lateral control. If conventional aileron arrangements are used to satisfy the lateral-control requirements, the flap span is necessarily limited and the problem of obtaining the lift required for take-off or landing becomes quite important. When full-span flaps are used to obtain the desired lift coefficient for the airplane, the designer is faced with the problem of including and properly locating a lateral-control device on the airplane which will be effective in all flight configurations and have characteristics that will not be deleterious or objectionable. The purpose of the present paper is to give the most pertinent part of the experimental data on the characteristics of lateral-control devices for use with full-span or almost full-span flaps. The data are, necessarily, greatly condensed and some data have been given in a form different from the original source. Additional information on any particular model may be obtained from the reference. (See reference 1 to 25 and table I.) Data on conventional balanced ailerons have been reported previously in reference 26, and a collection of fairly large-chord control-surface data has been given in reference 27. | |
| language | English | |
| title | NACA-TN-1404 | num |
| title | Collection of test data for lateral control with full-span flaps | en |
| type | standard | |
| page | 181 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1948 | |
| contenttype | fulltext |