综合考虑安全性和成本，给发动机装防爆盾较为合适，重量和成本不超过发动机本身，甚至可以用在一次性的火箭上。
在世界运载火箭当中只有SpaceX的F9这样做，并且做到了在一台发动机破裂、燃料大量泄漏的情况下继续飞行入轨，也是绝无仅有的。
（在部分发动机失效情况下入轨成功的火箭只有F9和土星5号，但土星5号只发生过发动机提前关闭，没有破裂和燃料泄漏。）
https://www.kechuang.org/t/51282XXXXXXXXXXXXXXXXXXXXXXX/wiki/SpaceX_CRS-1Falcon 9 engine anomaly
During the ascent, an engine anomaly occurred with one of the nine engines on the Falcon 9 first stage. SpaceX has emphasized for several years that the Falcon 9 first stage is designed for "engine out" capability, with the capability to shut down one or more malfunctioning engines and still make a successful ascent.[28] In the event, the SpaceX CRS-1's first stage shut down engine no. 1, and as a result continued the first-stage burn on the remaining eight engines longer than usual at a somewhat reduced thrust to insert the Dragon spacecraft into the proper orbit.[29] Although unintended, this was the first inflight demonstration of Falcon 9's "engine out" design,[15][30] and "provides a clear demonstration of the engine out capability."[31]
In response to the anomaly, NASA and SpaceX jointly formed the CRS-1 Post-Flight Investigation Board.[32]Preliminary information from the post-flight review board indicates that the Engine no. 1 fuel dome, above the nozzle, ruptured but did not explode. The burning fuel that exited before the engine was shut down caused the fairing rupture, as seen in the flight video recordings.[33] Subsequent investigations revealed in a Congressional hearing pinpointed the issue as an result of an undetected material flaw in the engine chamber jacket, likely introduced during engine production. During flight, the data suggests this material flaw ultimately developed into a breach in the main combustion chamber. This breach released a jet of hot gas and fuel in the direction of the main fuel line causing a secondary leak and ultimately a rapid drop in engine pressure. As a result, the flight computer commanded shutdown of engine 1 and Falcon 9 continued on its path to ensure Dragon’s entry into orbit for subsequent rendezvous and berthing with the ISS.[34]
