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NACA-RM-A7I30
An experimental investigation of the design variables for NACA submerged duct entrances
Year: 1948
Abstract: INTRODUCTION
For the development of a satisfactory air-induction system of an aircraft, several aerodynamic criteria must be evaluated in conjunction with those involving structural design and installation. Aerodynamically, the system should not reduce the available energy of the entering air, the drag of the body into which it is placed should not be increased, and the high-speed characteristics of the body or aircraft should not deteriorate. Although, in practice, an air-induction system possibly does not meet all these requirements, the merits of a system can be determined by the degree to which its characteristics approach the optimum.
A previous investigation of an air intake submerged below the body surface (refernce1) was exploratory in nature and was meant to indicate the trend for future research of this type inlet. This present report gives the results of more extensive investigations of NACA submerged duct entrances conducted at the Ames Aeronautical Laboratory. The work includes further development of certain configurations found to be desirable from preliminary tests and the investigation of other design parameters not previously considered.
For the development of a satisfactory air-induction system of an aircraft, several aerodynamic criteria must be evaluated in conjunction with those involving structural design and installation. Aerodynamically, the system should not reduce the available energy of the entering air, the drag of the body into which it is placed should not be increased, and the high-speed characteristics of the body or aircraft should not deteriorate. Although, in practice, an air-induction system possibly does not meet all these requirements, the merits of a system can be determined by the degree to which its characteristics approach the optimum.
A previous investigation of an air intake submerged below the body surface (refernce1) was exploratory in nature and was meant to indicate the trend for future research of this type inlet. This present report gives the results of more extensive investigations of NACA submerged duct entrances conducted at the Ames Aeronautical Laboratory. The work includes further development of certain configurations found to be desirable from preliminary tests and the investigation of other design parameters not previously considered.
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:37:51Z | |
| date available | 2017-09-04T17:37:51Z | |
| date copyright | 01/01/1948 | |
| date issued | 1948 | |
| identifier other | DOCTUDAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/160688 | |
| description abstract | INTRODUCTION For the development of a satisfactory air-induction system of an aircraft, several aerodynamic criteria must be evaluated in conjunction with those involving structural design and installation. Aerodynamically, the system should not reduce the available energy of the entering air, the drag of the body into which it is placed should not be increased, and the high-speed characteristics of the body or aircraft should not deteriorate. Although, in practice, an air-induction system possibly does not meet all these requirements, the merits of a system can be determined by the degree to which its characteristics approach the optimum. A previous investigation of an air intake submerged below the body surface (refernce1) was exploratory in nature and was meant to indicate the trend for future research of this type inlet. This present report gives the results of more extensive investigations of NACA submerged duct entrances conducted at the Ames Aeronautical Laboratory. The work includes further development of certain configurations found to be desirable from preliminary tests and the investigation of other design parameters not previously considered. | |
| language | English | |
| title | NACA-RM-A7I30 | num |
| title | An experimental investigation of the design variables for NACA submerged duct entrances | en |
| type | standard | |
| page | 60 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1948 | |
| contenttype | fulltext |