/vt/ - Virtual Youtubers

>>6814073
Cute! It's been a while since the last launch with her I've caught live.
https://files.catbox.moe/aqivyn.mp4

>>6814216
Cowgirl Clear when?

>>6814073
>New Shepard suborbital rocket
hooray, after 14 years we can finally see it shoot humans up

best of luck to BO

lets go! havent seen a live launch in a while

WATCHING JEFF BEZOS BLOW UP WITH ANIME GIRLS LETS GOOOOOOOOOOOOO

T-3:00

anyone here familiar with why you'd want to use hydrogen as oxidizer for your suborbital rocket?

How's our girl looking? brown alert?

>>6815049
Hydrogen tends to be one of the more energetic fuels you can use for your rocket. So for small rocket you can get a lot of power for your thrust. Also LIFTOFF IS GO!

>>6815049
Hydrogen is fuel, not oxidizer.
Hydrolox rocket engines are the most efficient engines you can get.

>>6815049
Efficiency vs. cost. Also I think kerosene leaves more internal residue which may be an issue when reusing a rocket

Is hydrogen only good for suborbital shit?

>>6815103
>>6815118
thanks, it just seems a little odd given that hydrogen can be extremely difficult to handle, and it's pretty much a given that you should be able to do an efficient kerolox engine (like the Merlin 1-D)

>no footage from the capsule
why.png

>>6815188
no, the space shuttle used hydrogen

>>6815188
Nah man that's what you want when going big. Everyone's using it for Liquid fuel stuff unless you're wanting to go to some exotic shit like mono-propellants but those are mostly for RCS

Also TOUCHDOWN!

>>6815211
This is just an elaborate marketing shit. Bezos got off from the rocket or wasn't there at all, so there wasn't footage from the capsule because the one with him on it was just airdropped without a rocket. No way he's risking his life for marketting.

>solid rocket fuel in the middle of the passenger compartment
that sounds scary lmao

>>6815211
Merlin is not quite efficient in terms of ISP which is basically the most important characteristic of the engine. Only 311 s in vacuum because they are open-cycle (and thus simple and cheap). You can push RP1+LOX up to 338 s (RD-180, closed cycle)
LH2+LOX starts at 400 s. But hydrogen is a lot less dense and thus needs bigger tanks (also with thermal insulation), requires complex ignition system in the engine, evaporates in tanks and then leaks straight through metal, so it is rarely used. The only orbital rocket which uses it today is Delta IV.
The modern tendency is to move to CH4+LOX (Raptor, BE-4).

>>6815979
but isn't ISP a more critical function for second stages (of which NS does not have)?

and about BE-4, it strikes as double-odd that you'd move to CH-4 after investing in a hydrogen engine... unless the plan is to use NS as a test bed for a hydrogen powered second stage for New Glenn (i don't keep track of blue origin, so i'm all ears)

>>6816068
Yes, ISP in upper stages is more important than in lower ones, but it still defines your overall delta-V.
New Glenn will use LH2 and BE-3 engine in the upper stage if nothing changes. But for first stage the tank size required for hydrogen is probably just too big.

Ria for scale

>>6818201
Imagine

Poor Ria isn't capable of blinking is she?
I hope she can get her live 2d soon.

>>6818459
Would be pretty hard to constantly make new hairclips and outfits for a live2d though

I'm going to the OFT-2 Launch in Florida next week! Hope to take some good pics to tweet to Ria-chan

>>6818436

>>6818531
Good luck

how is this autist so cute

>>6818531
>OFT-2 Launch
fingers crossed they actually succeed in the mission. boeing has been in the shits for the past five years it's sad.

>>6819101
They really have, I hope so too. At the least the Atlas V launch itself will be fun to see. I'll be in the area for the week so if there is a delay I'll hopefully still be there for reattempts. I bought tickets to watch from the KSC Saturn V center/Banana Creek which is like 5 miles from the pad. I'm very excited.