…In a multi-stage rocket, it is defined for each stage, but in this case the upper stage is considered to be the payload. The structure ratio, expressed as ε = m S / m O, is also often used as an indicator of rocket performance. However, the definitions of these terms are not universal, and care should be taken because (1-β) is sometimes called the structural efficiency, and β is sometimes called the structural mass ratio or the structure coefficient. … *Some of the terminology explanations that mention "structure ratio" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…多段式ロケットでは各段ごとに定義されるが,この場合上段は搭載物とみなされる。また,ε=mS/mOで表される構造質量比structure ratioもロケットの性能の指標としてよく用いられる。ただし,これらの用語の定義は普遍的なものではなく,(1-β)を構造効率と称したり,βを構造質量比,あるいは構造係数などと呼ぶこともあるので注意を要する。… ※「structure ratio」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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