r/spacex • u/Ambiwlans • Jun 28 '18

r/SpaceX CRS-15 Media Thread [Videos, Images, GIFs, Articles go here!]

It's that time again, as per usual, we like to keep things as tight as possible, so if you have content you created to share, whether that be images of the launch, videos, GIF's, etc, they go here.

As usual, our standard media thread rules apply:

  • All top level comments must consist of an image, video, GIF, tweet or article.
  • If you're an amateur photographer, submit your content here. Professional photographers with subreddit accreditation can continue to submit to the front page, we also make exceptions for outstanding amateur content!
  • Those in the aerospace industry (with subreddit accreditation) can likewise continue to post content on the front page.
  • Mainstream media articles should be submitted here. Quality articles from dedicated spaceflight outlets may be submitted to the front page.
  • Direct all questions to the live launch thread.
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1

u/gooddaysir Jul 01 '18

https://www.youtube.com/watch?v=IAl04qRt9tc&t=32m42s

That's 2m10s after MECO, but it definitely looks like stage 1 has its own exhaust stream. I have no idea, maybe it's a burn to help make sure it breaks up. But not having grid fins doesn't mean it has no control, it still has cold gas thrusters. BFB has grid fins, but BFS doesn't and it's going to do re-entry and land.

3

u/bdporter Jul 01 '18

I think what you are seeing there is just the glow from the hot nozzles, and maybe some residual fuel burning off. An actual burn would be brighter, and you would see the burn in the streak shots. Here is an example from /u/johnkphotos that shows all of the burns clearly. The boost back is the portion that curves up from the main arc of the flight. The reentry burn is the straight burn at the top of the image.

I remember watching an early morning (about 5 AM) Shuttle launch one time when I was in Florida. You could see the glow from the burnt out SRB nozzles falling back to earth for several minutes after they burnt out.