Fans of supersonic flight have been yearning for a new way to break the sound barrier ever since Concorde stopped flying in 2003.
원문출처 : https://www.cnn.com/travel/article/air-breathing-rocket-scli-intl-gbr-scn/index.html
원문출처 : https://www.cnn.com/travel/article/air-breathing-rocket-scli-intl-gbr-scn/index.html