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No escape tower on Dragon / Falcon 9
On Sep 30, 5:04*am, Pat Flannery wrote:
Jochem Huhmann wrote: Straight thinking, but a bit too straight... These are very different scenarios: In one you want the capsule to move away from an exploding booster as fast as possible, with very little need for an exact trajectory, and in the other you want a rather gentle, but very precise firing. Deorbiting by getting a hell of a kick in the butt with 20g is not exactly what you want anyway. You can get around that by using a escape system with a *number of individual solid motors... in a escape mode, they are all fired at once; in a retro mode they are fired sequentially, like the ones on Mercury and Gemini were. Gemini was to be blown free of a malfunctioning Titan II via firing all four retro motors simultaneously once it had passed the ascent trajectory point where its ejection seats were safe to use. Pat Titan II explosions and fireball were not of the magnitude of a RP-1/ LOX vehicle. The escape rockets would have to be much larger for abort than deorbit. So the Gemini scenario is not applicable to Falcon. Also don't want the vehicle having to figure out whether it is an abort or deorbit. That would unnecessarily make things more complex, therefore less reliable. |
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