FIELD: machine building.
SUBSTANCE: test section of a wind tunnel comprises a pressure chamber, perforated walls at the flow borders and silencing grids. The silencing grids with permeability of 5-70% are installed on that side of the perforated walls that are not flowed about by the working flow.
EFFECT: reduction of background noise and prevention of adverse influence of the grid on the gas flow in the working flow in the tunnel.
2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF ADAPTING WORKING SECTION OF WIND TUNNEL TO PRODUCE NONINDUCTIVE AIRFLOW ON AIRCRAFT MODEL AND DEVICE TO THIS END | 2011 |
|
RU2474802C1 |
| OPTICAL DEVICE FOR DETERMINING THE DISPLACEMENT RELATIVE TO EACH OTHER OF HOLES OF ADJACENT SURFACES | 2020 |
|
RU2749180C1 |
| PULSED AERODYNAMIC UNIT | 2023 |
|
RU2818485C1 |
| WORKING SECTION OF TRANSONIC AERODYNAMIC TUNNEL (VERSIONS) | 2009 |
|
RU2393449C1 |
| DYNAMICALLY SIMILAR AERODYNAMIC MODEL OF AIRCRAFT BEARING SURFACE | 2014 |
|
RU2578915C1 |
| METHOD OF DECREASING INDUCTION OF WORKING SECTION WALLS OF THE AERODYNAMIC TUNNEL AND SUBSONIC AND TRANSONIC AERODYNAMIC TUNNEL SPEEDS | 0 |
|
SU1746236A1 |
| AERODYNAMIC PIPE | 2018 |
|
RU2696938C1 |
| WIND TUNNEL PERFORATED WORKING PORTION | 0 |
|
SU453959A1 |
| WIND-TUNNEL | 2013 |
|
RU2526515C1 |
| 0 |
|
SU1779970A1 |
