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Starship's Third Flight Test [video]

spacex.com

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Re: Starship's Third Flight Test [video]

#101

Post by hoorayimhelping »

thelittleone wrote: post #86
preisschild wrote: post #69

Earlier quoted context omitted.

Technically its suborbital

Isn't orbit above 125 miles (200km)?

Space is generally defined to be 100km above earth's surface, an arbitrary point called the Karman Line [1].

Orbit is when an object is traveling so fast that it reaches the horizon of a body before the body's gravity can pull it down to the surface, but perpetually. It's basically perpetually falling around the body. Imagine one of those guys in a wingsuit skimming along the surface of a mountain, never actually touching the surface. It's similar to that, but at a much higher scale.

1) https://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line

Re: Starship's Third Flight Test [video]

#102

Post by usrusr »

thelittleone wrote: post #86
preisschild wrote: post #69

Earlier quoted context omitted.

Technically its suborbital

Isn't orbit above 125 miles (200km)?

Orbit is a speed, not a distance. You could do a suborbital hop that has its highest point beyond the orbit of the moon. (if you aim very, very well)

Re: Starship's Third Flight Test [video]

#103

Post by whitehexagon »

mdorazio wrote: post #25
whitehexagon wrote: post #20

Anyone have a non youtube link please?

SpaceX does not stream on YouTube anymore. You can always get the official X broadcast link off their spacex.com launches page. Here's the one for today: https://www.spacex.com/launches/mission/?missionId=starship-...

Wow, the re-entry is almost as exciting! hopefully the ship got the heat shield rotated into position again. I wonder why they dont cover the whole rocket with them if they are as light as they demonstrated. Amazing watch anyway, thanks.

Re: Starship's Third Flight Test [video]

#104

Post by 4ggr0 »

namaria wrote: post #97
4ggr0 wrote: post #82

Earlier quoted context omitted.

I actually have the stream open in the background, can't believe how happy and calm this music makes me while patching servers :D

If you like that here's a protip: search for bossa nova instrumentals on youtube for soothing tropical background music

Ahh, beautiful, thanks! :D

Sounds like the perfect music to calm down in the evening or while cooking.

Re: Starship's Third Flight Test [video]

#105

Post by jajko »

sneak wrote: post #67
_Microft wrote: post #58

Earlier quoted context omitted.

I guess they didn’t want to make it too easy for some Chinese fishing vessels ;)

Chinese fishing vessels in the Gulf of Mexico?

On shores of Africa, in Gulf of Mexico... yes, in 2024 ships can travel far

Re: Starship's Third Flight Test [video]

#106

Post by BenoitP »

perihelions wrote: post #94
ghufran_syed wrote: post #91

Earlier quoted context omitted.

It's at 26000 km/h which sufficient for orbital velocity. It looks like it's in an elliptical orbit. I guess we'll see soon if they need to do a de-orbit burn, or if the orbit just intersects the atmosphere and they use atmospheric braking?

I did the math. So, the minimal orbit at 180 km, the one that grazes the earth's surface at its perigee, is about 7.75 km/s or 27,900 kph. The other commenters are right: it was never technically orbital. edit: (let* ((μ 398600.0) ;; km^3/s^2 (r 6371.0) ;; km (peri (+ r 0.0)) (apo (+ r 180.0)) (a (* 0.5 (+ peri apo)))) (sqrt (* μ (- (/ 2.0 apo) (/ 1.0 a))))) ;; 7.745844595118488

> 26000 km/h

> 27,900 kph

Seems like they want to test the limit. Same speeds as LEO, but guaranteed to come down.

Re: Starship's Third Flight Test [video]

#107

Post by elif »

ghufran_syed wrote: post #93
elif wrote: post #87

Earlier quoted context omitted.

when you search spacex on x, you are presented the official account first. when i searched spacex on multiple youtube apps this morning, i couldn't even find the official spacex account after going through pages of menus.

This is what shows up for me: https://www.youtube.com/spacex

you are searching channels. that is not available on, the roku app, for instance.

if you search by channels on x, for fair comparison, there are no spoofed spacex accounts to be seen anywhere. https://twitter.com/search?q=spacex&src=recent_search_click&...

Re: Starship's Third Flight Test [video]

#109

Post by macintux »

whitehexagon wrote: post #103
mdorazio wrote: post #25

Earlier quoted context omitted.

SpaceX does not stream on YouTube anymore. You can always get the official X broadcast link off their spacex.com launches page. Here's the one for today: https://www.spacex.com/launches/mission/?missionId=starship-...

Wow, the re-entry is almost as exciting! hopefully the ship got the heat shield rotated into position again. I wonder why they dont cover the whole rocket with them if they are as light as they demonstrated. Amazing watch anyway, thanks.

Placing the heat tiles is (currently) entirely manual, and is very time-consuming. Starship is big.

Re: Starship's Third Flight Test [video]

#110

Post by WithinReason »

usrusr wrote: post #102
thelittleone wrote: post #86

Earlier quoted context omitted.

Isn't orbit above 125 miles (200km)?

Orbit is a speed, not a distance. You could do a suborbital hop that has its highest point beyond the orbit of the moon. (if you aim very, very well)

At the same time, if your velocity vector is pointing towards the ground you're not achieving orbit no matter your speed
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