SpaceX本周将发射最终版“猎鹰9号”，有哪些改进？

B1046 is the first Block 5 Falcon 9 booster. It features a bolted octaweb (as opposed to welded), SpaceX proprietary heat shielding on inconel mountings, titanium grid fins, retractable black landing legs, man-rated Merlin 1D engines (boasting a ~10% thrust increase over previous versions), COPV 2.0, and a black interstage. The upgrade allows Falcon 9 man-rating while affording a performance boost. It is hoped that the block 5 upgrades will enable rapid and routine reu****lity of Falcon 9 1st stages.

B1046是首枚Block 5 Falcon 9助推器，它具有:

1. 螺栓连接的(发动机舱？)八角形网格（与焊接相对），2. 配有SpaceX专有的"铬镍铁合金？〃热屏障，3. 钛合金网格翅片，4. 伸缩式黑色着陆腿，5. 载人级Merlin 1D发动机,（6. 相比以前的版本拥有大约10％的推力增加），7. COPV 2.0以及 8. 黑色的级间段。

升级使得Falcon 9具有载人级别，同时提供性能提升。它(也)希望升级到block 5后能够实现 猎鹰9第一级复用的快速周转(和次数)。

https://www.reddit.com/r/spacex/ ... b1046_.28unflown.29