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Why doesn't the crew dragon spacecraft of Polaris dawn mission appear to have a launch escape system?

All the crew Dragon spacecraft of SpaceX have a launch escape system powered by super Draco engines in case of an anomaly. But the on the spacecraft of the Polaris dawn mission, the Dracos appear to ...
Ashvin's user avatar
  • 2,954
16 votes
2 answers
1k views

Why was Dragon sent to the isolation room?

I'm asking about this photograph that was published on SpaceX Flickr photostream, which I also noticed in a few recent articles (e.g. this one) about the upcoming Crew Dragon pad abort test: SpaceX ...
TildalWave's user avatar
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25 votes
2 answers
10k views

Why did SpaceX choose to use Hydrazine over newer "green" propellants for Dragon 2?

Firstly, I understand the need to use hypergolics over cryogenics as part of Dragon 2's abort and landing sequence - they provide "instant on" thrust and are throttlable with very wide ...
marked-down's user avatar
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