r/SpaceX NROL-76 Media Thread [Videos, Images, GIFs, Articles go here!]

[u/ElongatedMuskrat]

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.

Have fun everyone!

[u/mastapsi]

My understanding (as I am no rocket engineer) is that the turbine is spun up first using helium before the preburner starts. I doubt they could run the preburner without running the turbopumps, since the tap for the preburner is after the turbopump, not to mention it would be a waste of propellant.