Jump to content

SpaceX Discussion Thread


Skylon
 Share

Recommended Posts

I was outside for this. Amazing to watch. I live roughly 100 miles from the coast but the launch is still crystal clear, and the turn around burn is like watching a northern light bloom up above you. Totally worth staying up for. Good job SpaceX. Great work Falcon. Good luck Dragon. And thank the kraken the weather allowed me to see this for a change.

Link to comment
Share on other sites

50 minutes ago, kurja said:

Was there just one 2nd stage engine burn? Do they always get to low orbit/ISS with a single 2nd stage engine burn?

Yes, normal profile would be one long burn to LEO.

Link to comment
Share on other sites

1 hour ago, mikegarrison said:

Do they later do a controlled de-orbit burn with the second stage?

Yes.

 

Didn't watch it live, but just watched it.  That was easily the coolest looking non-heavy landing I've seen.

Link to comment
Share on other sites

That infrared shot was awesome--you could see the top portion of the booster was noticeable hotter than the middle section from (presumably) re-entry heating.

I wish SpaceX would send a second boat out alongside OCISLY, so we could get more consistent video of the barge landings.

Link to comment
Share on other sites

43 minutes ago, zolotiyeruki said:

you could see the top portion of the booster was noticeable hotter than the middle section

Was it actually hotter? Or did it simply radiate more IR because it was the black composite interstage instead of painted white aluminum alloy tankage?

Edited by StrandedonEarth
Link to comment
Share on other sites

3 minutes ago, StrandedonEarth said:

Was it actually hotter? Or did it simply radiate more IR because it was the black composite interstage instead of painted white aluminum alloy tankage?

It looks like a heat gradient to me, without a sharp change at the interstage. 

W6FmUKq.png

 

Link to comment
Share on other sites

20 minutes ago, CatastrophicFailure said:

Starlink. I’m betting one of the first “official” uses will be more reliable drone ship footage. 

The drone ship is already relaying its video feed via satellite.  The issue is that the landing burn shakes the drone ship hard enough to temporarily knock the antenna out of alignment.  With a second craft around half a kilometer away, that shouldn't be as big of an issue.

Link to comment
Share on other sites

1 minute ago, zolotiyeruki said:

The drone ship is already relaying its video feed via satellite.  The issue is that the landing burn shakes the drone ship hard enough to temporarily knock the antenna out of alignment.  With a second craft around half a kilometer away, that shouldn't be as big of an issue.

The drone ship uses an old-school dish antenna that can't adjust itself quickly enough to track the satellite when getting shaken around by the exhaust. Starlink will use a modern phased-array antenna with no moving parts that should be far more resistant to shaking. And will be cheaper and safer to operate, even in the test phase, vs an entire boat and crew. 

Link to comment
Share on other sites

1 hour ago, CatastrophicFailure said:

The drone ship uses an old-school dish antenna that can't adjust itself quickly enough to track the satellite when getting shaken around by the exhaust. Starlink will use a modern phased-array antenna with no moving parts that should be far more resistant to shaking. And will be cheaper and safer to operate, even in the test phase, vs an entire boat and crew. 

Is it phased array on the droneship as well? I didn't know that!

Link to comment
Share on other sites

7 minutes ago, zolotiyeruki said:

Is it phased array on the droneship as well? I didn't know that!

Starlink will be phased array entirely, that's the only way it can work with LEO sats. So it's perfect for moving things like ships, planes, cars, RV's... and people in the middle of nowhere.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...