Explaining the Delta Rocket Fireball - Kerbal Space Program Doesn't Teach.... 

I wonder how much delta-V a cannon shot imparts...

Spy Crab ok I'm with you. To navigate in the vacuum of space, the m1 could fire in the opposite direction of where it wants to go.

Containment Failure about 1500m/s

Space tanks for our space force! I love it!

Sebi One: The latest version (M1A2) can carry 42 rounds for its main gun. The M829A3 round weighs about 22kg, including the propellant, but since the combustion gases also shoot out of the barrel, we can include that mass in the calculation. The muzzle velocity is 1555m/s. If you do the math, that translates into a delta-V of a measly 23m/s for the tank itself. Not much manouvering gonna happen. In terms of specific impulse, that's only about 158s, which means that tank guns are pretty bad rocket engines.

Nice

HI DESTIN :D

Laminar flow FTW!

That was a very man(ley) pun.

Haha nice one

I do that also after snacking on burritos

Terry Wilson no, his is just an interplanetary Rocket

Terry Wilson not on start, but after an accident and with water

"my other car is an interplanetary rocket"

I produce a giant fireball at startup too!

They have to make it exciting to keep people interested ;)

Well, except for the F9. Those are pretty sedate next to 'accidentally light yourself on fire every launch'.

@@benjaminrich9063 then they set themselves on fire in order to return to earth safely

lol

AIRHORN NOISE AIRHORN NOISE AIRHORN NOISE!

Get out

They should rename Vulcan to Delta V.

Ha. Ha. Ha.

David Wei Space Crème Brûlée !! 😂

David W. - LOL Too dang funnny! HOw bout: rocketeer butt flambe'

yum 😎

Lol

the tastiest rocket ever built!

Toasty - and tasty!

In fact, it is cork, not foam. Or at least a material that contains cork as the main component.

You are right. I read this in someone else’s comment an did a quick research because I was intrigued by the unusual choice of material and wanted to know more about it. All I could find was “Cork insulation in NASA’s Delta project”. But it’s used to prevent excess heating from aerodynamic friction. www.cork-2000.com/en/141/Cork+news/Cork+insulation+in+nasas+delta+project.html

"its surface". You don't say "by the seat of I'm pants" either. My - your - his/her/its - our - your - their.

Nothing worse than some random upper engine lighting up for no reason and you have to revert, only to do the same mistake again because you did it on the fly instead of in the VAB... grr

Or just add more struts.

Relatable

Somethings gone wrong, they seem to have completely forgotten the re-entry & landing staging!

Enigneering Report: Critical: No Parachutes!

NkkkkjbnTookster ggggggg

Am 99% sure the orange color is the natural color of the insulating foam. Paint adds weight. Is the reason why the first Space Shuttle launches had a white tank - they very soon switched to no paint.

Thats a result of it _not_ being painted.

@@Unknwn-fw3po _underline_

10000000000% pissed off;)

HAHAHAHA

Technically the delta 4 has five rockets in its family. They totally should have named one Delta V.

How much delta v does the delta airlines delta v have?

luckily and sadly they wont, they will be using vulcan

@@jacko4932 Yeah, rip hydrolox rockets, theyre too expensive when being expended. Almost all next gen rockets that arent planned to be reusable will have SRBs :(

depends on the part. some are quite hot.

flippynl badamtish

And that's why I am building a sugar rocket in May. With camera in it :) Expected fly height to be at least 100m in case of two stage burning engine

But SpaceX rockets are cooler.

Bin Ou Yang I still question how carrying extra fuel to perform a rocket landing (increasing weight and therefore reducing payload) is anywhere near as efficient as just.. using fucking parachutes that don’t need shit tons of fuel to work.

Vlad Tchompalov that comment needs to be pinned

*de orbit

thats everyday astronauts job

@@kolba1253 mhm

Jan Kalbarczyk i was gonna say that

I was taught to open both valves at the nozzle about one-quarter turn, acetylene first, and then ignite the flame. It ignites easily and you don’t get this soot development at all.

Sort of. Except that hydrogen doesn't soot.

Yes, but I'm not running the torch on hydrogen. It doesn't make a bright yellow flame, either.

Except that the fireball burns your eyebrows off every time you light the torch.

then don't light your torch off your cigarette....nupty

Greg Cooper Decatur, to be precise.

Rocketdyne always sounds to me like it belongs in Terminator 1 or 2. 😀

Greg Coopehhh

I went to grad school in Huntsville years ago. Great town. I regret leaving.

My father works as an aerospace engineer on the Delta V with ULA out of Decatur, AL. They just had their 30th successful launch out of California a few days ago.

I agree, that would be cool!

What rocket would be human rated according to NASA standards? Seriously, while there are some general assumptions of what human rating means, none of the launch vehicles which have carried NASA crews into orbit have ever met their own human rating guidelines. The Soyuz and even the Shen Zhou spacecraft would have failed too. The fact that the Falcon 9 and the Atlas V will be technically human rated when they fly to the ISS is just a matter of perspective. Scott Manley's take on this would be entertaining to watch though.

Yes, yes! I too would love to see what it takes to "human rate" what amounts to, effectively, a round of long range artillery. ^_^

My grammar is so bad but people still understand what I'm trying to say ,😂

GlanderBrondurg, as long as it meets NASA's 99.999% acceptability. Thankfully the Boeing Starliner and the SpaceX Crew Dragon has launch escape systems for the event that 0.001% was to happen.

all that mean is it worked as planned and calculated. Not out of the ordinary really...

However, the FH animation showed the center core returning to land, which never made any sense. The barge is the only place it makes sense to land the center.

It's a ULA launch.

welp. ayylmao

KSP at NASA. You know they use it to plan missions.

Yeah in the last one he mentioned the next nuke episode will be going into enrichment/reprocessing.

lol. That design is hilarious. I mean, I'm sure they wouldn't have done it if they had a choice, but still, the fact that your aircraft leaks fuel whenever it's not flying fast enough for thermal expansion to seal all the holes sounds really dumb.

KuraIthys better than your fuel tank cracking open when flying at high speeds due to expansion, I assume that’s what would happen at least

A few years back I was playing a videogame called SpaceChem. It's a sort of finite state machine contextualized as a videogame. The solution I was most proud of involved solving the problem randomly then checking if I had solved it correctly. It was a massively wasteful but elegant solution. I feel some kinship with those SR-71 designers. "Our solution leaks fuel constantly until we achieve supersonic flight but jet fuel isn't that expensive so we will just constantly refuel until the plane leave US airspace and goes supersonic."

Probably clipped inside vessel somewhere, so it doesn't impact its aesthetics.

Integrated with the control core.

Or maybe the one playing is just playing with pure vanilla. :0

porkypine no this is rss

+Bzorlan This is RSS/RO, but MJ is probably also installed

It's not paint - it's foam. So it's very easily burnt.

Thanks!

There is black smoke though so I wonder if it's the mixture of hydrogen to air (rich mixture) and carbon is the byproduct

I think that'd only happen if they were using the CO2 in the air as an oxygen source. I'm no expert so I could easily be wrong about that. I don't think they could be doing that because of how much energy it takes to break the bonds in CO2, we fuel most of our world on the energy released by those bonds forming and to break them you need at least as much energy as it released in the first place. Secondly, I don't think there is enough CO2 in the atmosphere to account for that much soot that quickly in that local of an area. I was assuming that the soot was coming from the rocket coating, apparently foam, and the graphite on the cones, and perhaps there is some incidental litter; they might burn of plastic seals on things that need to be kept clear of any moisture or dust or something. Then there's leaves and shit on the ground maybe or even small animals that entered the fireball zone. No evidence for any of that, just my thoughts.

yeah, agreed. sort of what I was thinking and trying to say

If you look at footage from the launch crawler, the sparklers were set well below the SSMEs, so that hydrogen that did combust due to this pre-ignition sparking would do so in the exhaust area and not flame up around the shuttle itself.

"Human catchtel"

There are 2 news outlets who independently received reports from sources in congress that the mission was lost. That is all that is known about it. The fact that no one appears to declare the mission a success (which is allowed, even with the most classified of missions) also goes to show that something did not go according to plan. Since SpaceX claims the F9 performed as planned we can only assume that something went wrong after SECO. The most probable cause at this moment is that the payload adapter (usually built by SpaceX, but in this case by the customer) failed to seperate the payload and because they did not see a way to release it the second stage did a deorbit burn with the payload still attached.

Zuma is a funny story imo. SpaceX did everything as they were supposed to do - they successfully delivered the payload into orbit. What happens after that is a different story as there is no official information and at the recent briefing the US government well - lets say it like this - they didn't do their job at all.

Or maybe... they *want* us to believe that Zuma is indeed lost... for the safety of whatever mission it was designed to carry on?

The odd thing is, if F9 performed nominally, Zuma should be in the correct orbit. Which means there is no reason for it to have reentered. So either the government is trying to hide it (could be very advantageous) or somehow the spacecraft's propulsion system went very wrong and deorbited it somehow. Besides that I can't imagine why it would reenter.

maybe zuma has some stealth technology so you can't see It, so they deorbited space x second stage so it doesn't follow Zuma in the same orbit

That fireball is way larger than I would have ever expected. Not too long burning, but it's huge.

I saw that as well. Made me giggle like a little schoolgirl xD

Which one was it?

Yes. Technically oxygen is not referred to as a fuel in rocketry - it's an oxidizer. The other part of the mixture is referred to as the fuel. The two (or more) components together are referred to as propellant. Very pedantic, sure, but it matters in those kinds of things!

In this case, Fuel is LHy, Oxidiser is LOx. A balanced ratio is 1:8 by mass. Fuel rich uses more LHy. On the other hand, Oxidiser rich uses more LOx.

Fuel rich (aka rich mixture) means the same for a rocket as it does for a car engine: Pumping more fuel into the engine than it can burn with the available oxidizer. This is done for similar reasons: In a car engine, making the mixture too lean makes the combustion much hotter, which puts a lot of thermal stress on critical parts such as exhaust valves and spark plugs. In the rocket, burning too lean also means burning too hot, which can literally melt the combustion chamber and nozzle if the temperatures are not kept under control. Cooling in a rocket is often described as "regenerative", which basically means that the fuel is pumped through a layer surrounding the combustion chamber and rocket nozzle, preventing those critical parts from overheating. This has the convenient side-effect of preheating the fuel, vaporizing it before it is injected into the combustion chamber to be burned. There is of course another reason for running the rocket engine fuel rich, which is to improve the specific impulse, a measure of rocket propellant efficiency. This is about exhaust velocity - the faster this is, the more thrust the rocket generates. But for any given temperature, smaller molecules travel faster than larger ones. Hydrogen is just about the smallest molecule possible, so in a rocket using hydrogen as the fuel, you want to have a decent proportion exhausting without being burned by the oxygen, which would convert it into water vapour, a much heavier molecule. Though of course you do have to burn some of it to heat up the rest, hence the rich mixture. This also works for rockets burning kerosene (aka RP-1), which is a hydrocarbon. Oxygen is used as the oxidizer for this as well, so a lean mixture would produce water vapour and carbon dioxide. Running this fuel rich means that some of the carbon is oxidized to carbon monoxide, a smaller molecule, meaning greater exhaust velocity and higher specific impulse.

It’s because of ablative nozzles. The rs68s would get destroyed by the srb plumes. The rs25s will not

The core runs from sea level to almost orbit. They need engines that are efficient from sea level to orbit; which the RS-25 does spectacularly

Erm... it's fire.. the foam changed color... putting one and one together suggests something gets burned during this action, which results in black smoke usually

sooty smoke like that is almost always due to the incomplete burn of something with carbon in it from what Ive seen.

That'd be burning foam. Kind of gross.

Mush V. Peets don't cook your marshmallows in that fire.

Dimitri Wu flame retardant paint in red areas.

Most parts of a space rocket are a one time use component due to the weight they have while empty, it's too much for parachutes to handle. Booster rockets on the other hand are light enough that they can be returned with a parachute because technically they are just a capped tube with a nozzle at the bottom for thrust and are packed with solid fuel to burn, not a liquid hence no need for separate fuel tanks in them.

You shouldn't call it a new designed rocket because the design is the same for each one but they do build a specific rocket for each Mission because it is expendable. Depending on the mission profile the components will either fall back down and burn up in the atmosphere or the land in whichever ocean is along the trajectory

Watch Idiocracy and tell me the world isn't getting dumber.

Only have to watch the newz

I never watch the news. I'm always amazed when I walk into somebody else's house and they have the TV on on the news constantly.

+Exodarion Good luck with your commitment ...

Brawndo has electrolytes.

They don't have a landing stage, that is only the falcon used by SpaceX

@TheSpaceGamer that's the joke. SpaceX are doing it right by making their stuff reusable, whereas the American government is still following the throw-away approach, as they do with everything else.

R/whoosh

People who believe in that nonsense need a more, shall we say, fully rounded education ...

JSparrowist I feel sorry for you, man.

I don't believe the earth is flat. Just to clarify. My family does though. =(

It is because school don't teach the whole story. They teach few things and stuff but that's it. Next year they learn the same thing. They aren't shown physics, science in general, and the earth at a young age. The, "it's too complicated" is really stupid. Math is really "complicated" for people yet we learn it. It's this that cause them to be locked in their own psedo science world, which causes them to believe in the flat pizza planet.

Show them this minute long video. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-LSrL4xIQT7E.html It's the curvature of the Earth demonstrated with a high-zoom camera. The creator of the video, Soundly, zoomed in on the horizon with a Nikon P900 camera, demonstrating the causeway curving over the horizon. Check out some of the other things on his channel if you want, your family might want more proof that he's not a "NASA shill government slave" like Flat Earthers always say. Hope your family can find themselves in reality soon.

Because its first stage used kerosene and oxygen, not hydrogen and oxygen.

Saturn V's first stage fuel is liquid at room temperature (it's kerosene).

The kerosene fuel of the Saturn V will just fall straight down and ignite below the rocket, while the hydrogen on the Delta IV will rise quickly as it is much lighter than air. Simply put.

If you watch a Saturn launch with cameras aimed at the base, you'll see a smaller firball rise around the base of the rocket. Then the turbopumps get up to speed and the firball is sucked back down into the pit by the thrusting fuel travelling downward. See, for example, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DKtVpvzUF1Y.html

I have seen a slow motion film of a Saturn V launch, taken from close to the booster. Everything catches fire... But it takes time after the ignition before the smoke and flames get sucked back down. Kerosene doesn't burn well as a liquid, though not as hard as diesel to get ignited..

I can’t really do mobile games because of my day job. Besides those guys ask people to make a 5 Star review to unlock content and that’s straight up dishonest (it works if you give it a 1 Star review)

Scott Manley i understand...thanks for replying so quickly

I have never seen a game that tells you (even implicitly) that to unlock content you must rate 5 stars.

All of SpaceX's staging seems to have worked fine, if anyone messed up, it was Northrop Grumman. As far as we know, they also built the payload adaptor, which is what (allegedly) failed to separate.

top kek na, that satellite is up there, it's just a great way to get everyone to ignore it if they say it failed...

Because off course the people you want to hide it from are not capable of tracking a satellite and the public isn't going to be pissed you lost a billion dollar piece of equipment.

for all we know Zuma is up and running as intended as there are no contrary information - and i mean confirmed official information and not some bullshit newsstory. the payload was confirmed to be in orbit - correct position, trajectory and all that. But now somehow the US government supposedly doesn't know what is going on... yeah right.

Truth Undenied arguably this caused more attention to be paid to the satellite, so if that's what they were going for, BACKFIRE!