Aerodynamic Tests Conducted on a Large Scale Nose Landing Gear and Cavity Model in the ARA Transonic Wind Tunnel

2016 ◽  
Author(s):  
Doug Greenwell ◽  
Andrea Hill ◽  
Mark K. Quinn
Keyword(s):  
Wind Tunnel ◽  
Large Scale ◽  
Landing Gear ◽  
Cavity Model ◽  
Transonic Wind Tunnel

scholarly journals Experimental Research on Noise Reduction for Continuous Transonic Wind Tunnel Loop

2020 ◽  
Vol 38 (4) ◽  
pp. 855-861
Author(s):  
Jiming Chen ◽  
Shenghao Wu ◽  
Zhenhua Chen ◽  
Jinlei Lyu ◽  
Haitao Pei
Keyword(s):  
Wind Tunnel ◽  
Experimental Research ◽  
Test Section ◽  
High Speed ◽  
Large Scale ◽  
Glass Fibers ◽  
Pressure Coefficient ◽  
Wind Tunnel Test ◽  
Noise Sources ◽  
Transonic Wind Tunnel

The noise level of wind tunnel test section is respected as one of the most important performance specifications to represent the flow field quality, especially for large scale wind tunnel. According to the acoustic experimental research conducted in the 0.6 m continuous transonic wind tunnel of CARDC, main noise sources in the tunnel loop included the compressor, the high-speed diffuser and the test section. To reduce the noise in the test section, it is necessary to prevent the test section from the compressor noise propagated both forward and backward. In 0.6 m wind tunnel loop, acoustic treatments were installed on both the compressor rear cone and the fourth corner to prevent the noise emitted from the compressor from propagating forward. The vanes in the forth corner were filled with glass fibers and covered with perforated panels. And the compressor rear cone was covered with three layers of micro-perforated panels. With acoustic treatment in the tunnel loop and the second throat throttling, the fluctuation pressure coefficient (ΔCp) is lower than 0.8%, which is close to the international advanced level.

Identification of Wall Interference Parameters in Two-Dimensional Testing in Transonic Wind Tunnel Using the PSP Technique

2016 ◽  
Author(s):  
sergio oliveira ◽  
Ana Cristina Avelar ◽  
Henrique Leite ◽  
João Batista Pessoa Falcão Filho
Keyword(s):  
Wind Tunnel ◽  
Two Dimensional ◽  
Transonic Wind Tunnel

Assessment of sidewall interference in a two-dimensional transonic wind tunnel

2001 ◽  
Author(s):  
Norikazu Sudani ◽  
Mamoru Sato ◽  
Hiroshi Kanda ◽  
Toda Nobuhiro ◽  
Masashi Shigemi
Keyword(s):  
Wind Tunnel ◽  
Two Dimensional ◽  
Transonic Wind Tunnel
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