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NACA-TN-728
Wind-tunnel investigation of an N.A.C.A. 23021 airfoil with two arrangements of a 40-percent-chord slotted flap
Year: 1939
Abstract: INTRODUCTION
The National Advisory Committee for Aeronautics is conducting an extrusive investigation to determine the relative merits of various types 32 lift-increasing devices. For use in take-off, a high-lift device capable of producing high lift with low drag is desirable. For use in landings, however, high lift with variable drag is believed desirable. The slotted flaps being Investigated by the N.A.C.A. are apparently capable-of fulfilling these conflicting Requirements.
The purpose of the present tests was to determine the aerodynamic characteristics of the N.A.C.A. 23021 airfoil with a 40-percent-chord slotted flap. The section aerodynamic characteristics of the present airfoil-flap combination are compared with those of an N.A.C.A. 23021 airfoil with a 25.6G-Ijerdcnt-c.ho-rd slotted flap and of an N.A.C.A. 23012 airfoil with a no-percent-chord slotted
The National Advisory Committee for Aeronautics is conducting an extrusive investigation to determine the relative merits of various types 32 lift-increasing devices. For use in take-off, a high-lift device capable of producing high lift with low drag is desirable. For use in landings, however, high lift with variable drag is believed desirable. The slotted flaps being Investigated by the N.A.C.A. are apparently capable-of fulfilling these conflicting Requirements.
The purpose of the present tests was to determine the aerodynamic characteristics of the N.A.C.A. 23021 airfoil with a 40-percent-chord slotted flap. The section aerodynamic characteristics of the present airfoil-flap combination are compared with those of an N.A.C.A. 23021 airfoil with a 25.6G-Ijerdcnt-c.ho-rd slotted flap and of an N.A.C.A. 23012 airfoil with a no-percent-chord slotted
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:14:34Z | |
| date available | 2017-09-04T18:14:34Z | |
| date copyright | 01/01/1939 | |
| date issued | 1939 | |
| identifier other | HHYIYDAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsery=autho162s7D8308/handle/yse/197521 | |
| description abstract | INTRODUCTION The National Advisory Committee for Aeronautics is conducting an extrusive investigation to determine the relative merits of various types 32 lift-increasing devices. For use in take-off, a high-lift device capable of producing high lift with low drag is desirable. For use in landings, however, high lift with variable drag is believed desirable. The slotted flaps being Investigated by the N.A.C.A. are apparently capable-of fulfilling these conflicting Requirements. The purpose of the present tests was to determine the aerodynamic characteristics of the N.A.C.A. 23021 airfoil with a 40-percent-chord slotted flap. The section aerodynamic characteristics of the present airfoil-flap combination are compared with those of an N.A.C.A. 23021 airfoil with a 25.6G-Ijerdcnt-c.ho-rd slotted flap and of an N.A.C.A. 23012 airfoil with a no-percent-chord slotted | |
| language | English | |
| title | NACA-TN-728 | num |
| title | Wind-tunnel investigation of an N.A.C.A. 23021 airfoil with two arrangements of a 40-percent-chord slotted flap | en |
| type | standard | |
| page | 23 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1939 | |
| contenttype | fulltext |