摘要 |
PURPOSE:To secure a highly efficient rocket, by unifying an end combustion grain and a tubular grain as one body. CONSTITUTION:Inside a rocket 1, an end combustion grain 3 and a tubular grain 4 are combined into unification. The rocket 1 being loaded with these grains comes to an entity excellent in efficient power never before considered possible, thanks to the synergistic effect of each merit these grains inherently have. |