…Jet and rocket planes had already been put to practical use during World War II, and supersonic flight was thought to be a piece of cake. However, it was difficult to surpass the speed of sound, and at one point the term "sound barrier" was even used. This was due in part to insufficient engine thrust, but more to a lack of knowledge about the shapes of wings and fuselages suitable for supersonic flight. … *Some of the terminology that mentions "sound barrier" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ジェット機やロケット機はすでに第2次世界大戦中に実用されており,超音速飛行はいともたやすいことと考えられていた。しかし音速を超えることはなかなかできず,一時は音の壁sound barrierなることばが使われたほどであった。これはエンジンの推力が不十分であったこともあるが,それよりも超音速飛行に適した翼や胴体の形状についての知識がなかったためであった。… ※「sound barrier」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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