Dec. 11, 2020, marks the 50th anniversary of NASA’s Langley Research Center’s 14×22 Subsonic Wind Tunnel.

The facility is used to assess aerodynamic performance of aircraft over a wide range of takeoff, landing, cruise, and high angle-of-attack conditions. It can provide acoustic, tethered free-flight, and forced-oscillation testing, motorsports research, aerodynamic material design studies and more.

The tunnel has been used by aircraft manufacturers, defense industry partners, the Department of Defense, and other government organizations. NASA projects have included researchers working space, science, exploration, and aeronautics programs in the continuing endeavor to achieve our NASA mission.

In this photo, engineers led by researcher Greg Gatlin have sprayed fluorescent oil on a 5.8 percent scale model of a futuristic hybrid wing body during tests in the tunnel. The oil helps researchers “see” the flow patterns when air passes over and around the model. Those patterns are important in determining crucial aircraft characteristics such as lift and drag.

Image Credit: NASA Langley/Preston Martin




在这张照片中,由研究员格雷格·加特林(Greg Gatlin)领导的工程师在隧道内的测试过程中,在比例为5.8%的未来派混合机翼模型上喷了荧光油。当空气从模型上方和周围通过时,该荧光油可帮助研究人员“查看”流动模式。这些模式对于确定关键的飞机特性(例如升力和阻力)很重要。

图片来源:NASA Langley / Preston Martin

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