UCSB vs. San Jose State Women's Basketball: Prediction & Game Info - Sunday, November 17
The UCSB Gauchos (1-2) battle the San Jose State Spartans (2-1) on Sunday, November 17, 2024 at 5:00 PM ET. Watch women's ...
Wikiwand19 天
Long March 2F
On 29 December 2002, a Long March 2F launched Shenzhou 4 for a final uncrewed test of the Shenzhou spacecraft for the upcoming flight of the first crewed mission. Until then, all missions were ...
Royal United Services Institute26 天
Russia’s Sarmat Test Failure: Implications for the Strategic Balance
The RD-274 is a mature design, variants of which have been employed since the mid-1980s. The fuel mix of UDMH (unsymmetrical dimethylhydrazine) and N202 is not especially volatile by the standards of ...
央广网29 天
长征二号丙运载火箭介绍
全箭起飞质量213吨，全长40米，一、二子级直径3.35米，卫星整流罩最大直径3.35米。它的一子级和二子级使用偏二甲肼(UDMH)和四氧化二氮(N2O4)作为推进剂，上面级智能分配器的固体发动机使用HTPB作为推进剂。 全箭由箭体结构、动力系统、控制系统、遥测系统、外 ...
央广网1 个月
长征三号乙运载火箭介绍
它的一子级、助推器和二子级使用偏二甲肼(UDMH)和四氧化二氮(N2O4)作为推进剂，三子级则使用效能更高的液氢(LH2)和液氧(LOX)。 全箭由箭体结构、动力系统、控制系统、遥测系统、外测安全系统、滑行段推进剂管理与姿态控制系统、低温推进剂利用系统、分离 ...