Seth Green visits NASA Goddard during a test of our centrifuge

[blablubb12345]

10 Gs sound a bit too much for an Ariane 5 launch. From the back of my head, max. G load is about 4 Gs.

[sonicskilz]

Doesn't it spin much faster than this?

[NASAWebbTelescope]

@sonicskilz Yes, this was just a balance test. Right now they are doing much faster spins. We'll eventually have video of that!

[huyked]

So I'm going to take a guess. At its max in the video, it seemed like it was around 5-6 Gs in that test?

Also, I'm gonna guess Seth has been a fan of space since he was a kid. :)

[NASAWebbTelescope]

@huyked Actually, this wasn't even 1 G - it was about 1/3 rpm. It was done to test the balance of the centrifuge. We're doing faster tests now. Because this was slow, however, we could watch with the door open. When it's really going, they clear everything nearby.

[robchalmers]

@NASAWebbTelescope Beg to differ, but the centrifuge is clearly going much faster than 1/3 rpm. Simple observation shows that it completes 1 revolution in about 12 seconds by the end of the video (i.e. about 5 rpm). Even in the cameraphone clip (youtube.com/watch?v=nego9h0WP­6A), it's running faster than 1/3 rpm.

[NASAWebbTelescope]

@robchalmers This was shot in 30 frames per second, but it converted to 60fps when it was processed, so that's why it looks faster than it was in real life.

[huyked]

@NASAWebbTelescope

Hello. Thank you very much for the reply.

I'm confused though:

1) At your vid at /watch?v=nego9h0WP6 , it seems to be making 1/2 a rev in 20 secs, so ~1.5 rpm (about 1-2 G, correct?)

2) But in this video, from 1:10 - 1:16 , it seems much faster, around 1/2 a revolution in 6 seconds, so that's 1 revolution per 12 seconds, or 5 rpm (which is ~ 5 Gs?)

Was I getting a sped up video here, and/or just the tail end of slowing down in the other video? Or my math is just wrong? Thx

[NASAWebbTelescope]

@huyked This was shot in 30 frames per second, but it converted to 60fps when it was processed, so that's why it looks faster than it was in real life.

[CorrieDavidson]

I bet he would have had more fun with our group - though they didn't turn on the centrifuge for us - hahah! #Nasatourntweet - I love you goddard!

[theismagelssen]

I'm in space..

[khqzuyli]

@theismagelssen welcome aboard

[Connorvic11]

@theismagelssen from portal?