Live! Falcon Heavy, world's most powerful rocket, maiden flight

[Lord Camomile]

That wasn't live, but a replay of the Arabsat launch. There are several YouTube channels rebroadcasting the SpaceX streams .

The next actual FH is scheduled for 22 June

I did wonder, to be honest, but was being lazy as I got ready for work

 

[friedaweed]

T minus 3 minutes

 

[friedaweed]

Fuckin'ell that's incredible. They landed the boosters like it was shot in reverse

 

[friedaweed]

That wasn't live, but a replay of the Arabsat launch. There are several YouTube channels rebroadcasting the SpaceX streams .

The next actual FH is scheduled for 22 June

Ah I see.

 

[HAL9000]

 

[T & P]

I think I might have to declare this on the ‘obvious facts you’ve only just realised about’ thread in the General forum. Either that or there’s something else I’m not getting.

Are sonic booms also generated when an object passes through the sound barrier in the other direction (from faster than to slower than)? I had always assumed it was only when they exceeded the speed of sound...

 

[a_chap]

It's not when they pass through the sound barrier. All objects exceeding the sound barrier create "sonic booms".

Waits to be told I'm completely wrong on this...

 

[2hats]

It's continuously generated but only experienced once (on any given pass) by a fixed (or relatively slow moving) observer on the ground.

 

[T & P]

It's not when they pass through the sound barrier. All objects exceeding the sound barrier create "sonic booms".

Waits to be told I'm completely wrong on this...

That’s what I always thought. So why should there be a sonic boom in that video when the boosters are slowing down, not increasing speed?

 

[a_chap]

Because - despite the fact they were slowing down - they were travelling faster then the speed of sound.

 

[JuanTwoThree]

Windows started tremblin' With a sonic boom

Windows started tremblin' With a sonic boom, boom

 

[2hats]

That’s what I always thought. So why should there be a sonic boom in that video when the boosters are slowing down, not increasing speed?

That sonic boom is arriving at the observer from an earlier phase of the descent (around 5-10km above and a few kms downrange of the observation location). It is not generated by the stages at the time you are seeing them.

 

[T & P]

Ahhhh... got it, cheers.

 

[TopCat]

That sounded fabulous played through my biggest speakers.

 

[a_chap]

This...

...is worth watching.