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SpaceX rockets and launches

Starship flight test 5 (potentially featuring an attempt to catch the first stage on return to the pad) appears to be targeting 1300-1407BST 13, 18 and 19 October, plus 1300-1537BST 14, 15, 16, and 17 October.
 
So many juicy flight dynamics/physics phenomena to think about in that first stage video. More to come at re-entry in about 10 minutes.
 
My favorite bit was the whole engine bay glowing from re-entry heating and then the engines suddenly turning black as fuel started flowing through them for startup.

Looks like the flap hinge is burning through again...
 
Pretty cool stuff with the booster.

What happened to the Starship?
It was still flying when the booster came back, the plan is it will make a controlled landing in the Indian Ocean but since there's no recovery ship it will just sink.
 
An amazing piece of work from an amazing company. Pity Musk is such a twat.
 
Im not well informed about these boosters so I was going to ask if some of the bits that were on fire were supposed to be on fire!
The 'problem' with SpaceX is that you don't have any publicly available prior detailed definition of the full test objectives/experiments (and, fairly often, not afterwards either). You know the headlines - this time they will attempt to catch the first stage - but you don't entirely know eg what re-entry thermal protection solutions they are testing (some tiles were clearly slightly damaged on Starship, visible prior to re-entry interface, but the incandescent material that is flying past from the lower to the upper sides, the sparking, is that due to experimental test articles composed of different materials, or just ablative filler, or due to hardware failure?). Nor do we know quite what energy management profile they intended to fly (some of the trans-entry regime flow dynamics were suggestive of banking to bleed off energy). There were clearly signs of burn through to (near-)structural failure in locations and certainly indications of thermally driven oxidative stress on the upper surfaces of the flaps that weren't there during the orbital coast. Though the fact that they managed to put it down within camera range of a buoy in the Indian Ocean would suggest that they retained sufficient structural integrity to command controlled flight down to the surface (except, again since they aren't totally open about these things, for all we know they actually had a fleet of camera buoys spaced out there and got lucky with the nearest one).
 
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The 'problem' with SpaceX is that you don't have any publicly available prior detailed definition of the full test objectives/experiments (and, fairly often, not afterwards either). You know the headlines - this time they will attempt to catch the first stage - but you don't entirely know eg what re-entry thermal protection solutions they are testing (some tiles were clearly slightly damaged on Starship, visible prior to re-entry interface, but the incandescent material that is flying past from the lower to the upper sides, the sparking, is that due to experimental test articles composed of different materials, or just ablative filler, or due to hardware failure?). Nor do we know quite what energy management profile they intended to fly (some of the trans-entry regime flow dynamics were suggestive of banking to bleed off energy). There were clearly signs of burn through to (near-)structural failure in locations and certainly indications of thermally driven oxidative stress on the upper surfaces of the flaps that weren't there during the orbital coast. Though the fact that they managed to put it down within camera range of a buoy in the Pacific would suggest that they retained sufficient structural integrity to command controlled flight down to the surface (except, again since they aren't totally open about these things, for all we know they actually had a fleet of camera buoys spaced out there and got lucky with the nearest one).

Oops, I see that the post I replied to meant I was talking at cross purposes and confusing people as to what I was referring to, and I didnt realise at the time. Sorry about that!

I was actually talking about the return of the Heavy One booster, and patterns of heat and fire seem on that as the chopstick thing was performed.

I hadnt even been keeping up with the reentry of the Starship when I made my earlier post. I've now reviewed the footage of that so your post now makes sense to me. I did watch a previous reentry of that ship so I now remember how interesting it was to see the stress and fire in certain sections of that ship previously too.
 
but you don't entirely know eg what re-entry thermal protection solutions they are testing (some tiles were clearly slightly damaged on Starship, visible prior to re-entry interface, but the incandescent material that is flying past from the lower to the upper sides, the sparking, is that due to experimental test articles composed of different materials, or just ablative filler, or due to hardware failure?).

Ah yes, now that I pay attention, on commentary they did spend a minute or so talking about some of the changes they made to that area this time compared to the previous Starship, including talking about an entire ablative layer, but in other respect these details were still a bit vague. Around the 4 minutes 20 onwards mark of the video I just posted is when they mentioned this stuff.
 
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