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5th Time Lucky for SpaceX


Perkil8r

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That really is a stunning achievement. A definite response to the Blue Origin that flew earlier in the week. Both are amazing, but the Space X one has much more potential. 

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Impressive yes but I will be truly impressed if they can now replicate the success. I really hope this one isn't just a fluke given the previous mishaps.

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That barge was rolling around a bit as well, that can't help. I think this is because there is no land down range of the launch site, that and most of Florida might not take kindly to that landing in the back garden. I would!

 

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One of the key differences (apart from size, payload and design purpose) between what Blue Origin and Space X do is that the New Shepard is a sub-orbital lob, straight up and down. The capsule comes down close to the first stage landing site. Falcon puts a payload into orbit; the arc trajectory is always shallowing to take advantage of the additional speed provided by the earth's rotation. So, they have two choices after first stage separation. Either reverse the trajectory and bring it back to the Cape (which they have done), or let it carry on a ballistic arc landing downrange - which means a barge. The first is an easier landing with more wiggle room but needs more fuel to be retained in the first stage (which reduces the second stage payload); it also has the possibility of going wrong quite badly if it got off course. The second is far more fuel efficient, but much harder to land. The Falcon which successfully landed at the Cape is being put in a museum and won't be re-flown, the other three were lost (bits of one washed up in Cornwall). Hopefully, this successful barge landing will be the first Falcon which flies twice.

 

They have another barge now stationed in the Pacific for Vanderberg AFB launches, which are mostly for polar or high inclination orbits. They could potentially launch east from there for equatorial or low inclination orbits, and bring the first stage down in Arizona or Nevada, but you can imagine the public outcry if they tried that! plus the higher latitude means less free inertia for launch.

 

New Shepards third flight last week had a very impressive high speed landing, braking at less than 4000ft.

 

 

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  • 4 weeks later...

And yesterdays night launch and landing - go to about 39 minutes to see the actual landing. Much faster landing than previous as this launch was for a geostationary satellite.

 

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