NASA has captured groundbreaking images of shockwaves from supersonic aircraft, the space agency said, as part of efforts to create a jet that flies faster than the speed of sound without producing sonic boom.
원문출처 : https://www.cnn.com/2019/03/07/us/nasa-supersonic-shockwave-interaction-flight-intl-scli/index.html
원문출처 : https://www.cnn.com/2019/03/07/us/nasa-supersonic-shockwave-interaction-flight-intl-scli/index.html