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Fatwa Arbuckle: Joooish Space Laser Operator
Editor

Happy “Scary Tree Thursday”, Wheelizens!

Fatwa Arbuckle: Joooish Space Laser Operator
Editor

Some good amateur footage of the Falcon Heavy boosters landing -- with sonic booms. Gave me a better sense of how “hot” those things come in.

http://digg.com/video/simultaneous-landing-spacex-sonic-boom

Fatwa Arbuckle: Joooish Space Laser Operator
Editor
Reply to  Machinist

Hi, Mac!

I’m even more impressed with SpaceX’s technology after seeing that video. (Especially given the Falcon 9’s size.)

I wonder how much kinetic energy those things have right before the landing burn starts.

Fatwa Arbuckle: Joooish Space Laser Operator
Editor
Reply to  Machinist

Speed of sound is roughly 740 mph (depending on air temp / humidity). Sound of rockets firing immediately follows the shock wave, which suggests to me the boosters are still supersonic when the engines are re-lit…but I might have that wrong.

Paddy O'Furnijur
Editor
Paddy O'Furnijur
3 years ago
Reply to  Machinist

Drag is proportional to the square of the velocity (holding everything else constant).

Paddy O'Furnijur
Editor
Paddy O'Furnijur
3 years ago

Sure Happy It’s Thursday, Gerbil Nation!
Good morning, Fatwa, and Mac!

Great video, Fatwa! Thanks!

Fatwa Arbuckle: Joooish Space Laser Operator
Editor

Heya, Paddy!

Glad you and Mac enjoyed the video; we’re such geeks ’round here. 😉

Thanks for the clarification re drag.

Paddy O'Furnijur
Editor
Paddy O'Furnijur
3 years ago

I didn’t want to do this, but with the above picture, you’ve forced me to.
You want yer drag? I’ve got yer drag right here!

Fatwa Arbuckle: Joooish Space Laser Operator
Editor

Heh.

I didn’t want to do this, but with the above picture, you’ve forced me to.

That sounds rather Frischian.

Paddy O'Furnijur
Editor
Paddy O'Furnijur
3 years ago

Frisian?

Neigh, you varlet!

Fatwa Arbuckle: Joooish Space Laser Operator
Editor

It’s been a while since I’ve been called a varlet.

*Thinks to self*

“I’ve still got it; yay!”