Also the one that propelled the elevator in the launch tower.

What about the three electric motors that powered their life support?

😂 facts

Oh, and the turbo pumps in the Rockets

@Tom Musial don’t forget the engines on the helicopter that retrieved their capsule from the ocean

where did they put all that hay for them horses? 🤔

New concept to me, but sounds like they were relatively well understood. First used on the Thor-Agena rocket: en.wikipedia.org/wiki/Ullage_motor

Somewhere on KZfaq there's camera footage of the inside of the S-IVB during flight. You see the tank draining as the liquid hydrogen is used up, then floating free as the stage coasts, then dropping back as the ullage motors fire for a second burn. It's pretty cool. Edit: In fact, here it is: kzfaq.info/get/bejne/o7Cqh5WTp626lqM.html

Thanks! The Saturn 1 kerosene tank footage is a lot shorter: kzfaq.info/get/bejne/nLJdgsxq0pjGlXU.html

On a related note, one thing that Amy did not have time to mention or chose not to include, was that once they were in space, helium was used to the pressurize the fuel tanks, to keep the fuel where it was needed, at the fuel nozzles so that no air would get into the lines.

According to Wikipedia, almost all rocket engines (after launch) use helium pressurisation. The alternative use of turbo-pumps is only justified for the heavier first stage(s).

Nyt Mare 😂😂😂

83 engines AND motors

John Ryan Then my job here is done

One could argue the astronauts were not going to willing go on a one way trip, and thus the 13 additional motors needed to return were also needed to go.

The basic answer is no they were not recovered. They just fell into the ocean. The full answer is probably more complicated than that. I bet Amy would be able to tell us.

Jeff Bezos found Apollo 12 first stage some years back and the remains are in a museum.

They found parts of the first stage from Apollo 11 as well. The first stages were destroyed upon contact with the ocean. They hit the water at some 4,xxx mph. So they exploded upon contact then sank

4000 miles per hour? I don't think so. They were a hollow cylinder in free fall. Terminal velocity is much much less than that, more than 10 times less. Yes, I know it was going very fast when it separated, but the atmosphere would either burn it or slow it down.

Gabriel Braun that speed is a number that stands out to me. I believe I read that somewhere. Can't confirm or deny that speed through Google searching.

MrJackHackney The lego saturn v is a nice model abd stages come apart.

No one goes into so called space, like no one has ever been to the moon, it’s all just a firework show here in earth then cgi cartoons 😂

APS* And there were 2 of those modules. I'm 3 years late, but hope someone will find this helpful

I love AIDs.

Simply put, space rules. It is one of the few 'interests' one can have where the possibilities, thoughts, dreams and ideas are truly endless. You can and never will truly know everything or figure everything out. Our possibilities of thoughts are endless, just like the universe

Amy did a video on the Q-Ball, which was the guidance system for the launch escape tower rocket. This video briefly covers your question: kzfaq.info/get/bejne/iaqHeNN_3ZaZpXU.html

So which germ is your father? And what does that make you?

Basically, if anything goes wrong, the solid rocket motors on top of the command module pull it away from the rocket *fast*, so that it can parachute to safety. It was used once, and succesfully: a soviet rocket exploded seconds after the crew got away, and other than being badly bruised and having a really bad day they were fine.

Mam Amheus I

+Superior Planet Thanks, that looks like a great resource. 👍 Any ideas where I could find a detailed description/discussion of the construction and structure (with diagrams) of the Apollo command module?

If there was an easier way, they would have tried! Star Trek, Scotty: I canna change the law of physics! Wikipedia gives a good explanation: en.wikipedia.org/wiki/Ullage_motor

Sweet!

On the LEM and the CSM they just used the RCS engines for ullage. On the heavier parts you need more thrust, hence all the solid motors.

Can work just fine with pressurised gas thrusters, that's what the second stage of SpaceX's Falcon rockets uses. (Nitrogen, in their case.)

The easiest way is hot staging, which is what Soyuz uses. You simply build an open interstage, and ignite the second stage before the first stage finishes burning. Or, on the spacecraft, you have the main propellant tanks feed a smaller sump tank that in turn feeds the engine. That way, as long as the sump tank is full you don't need to do a ullage burn.

Including the WW2 German stuff (163 Komet and the Bader) .... C-Stoff, T-Stoff! Scary!

Second that notion!

Yes pls.

Magnus Bekkengen The Russians used the hot staging method to solve this problem. Fascinating stuff.

That is indeed why the Soyuz uses hot staging, and why the Atlas had that interesting stage-and-a-half configuration. No one was really keen on or confident in igniting engines in flight at the time.

These were called ullage burns and the saturn, the CSM and LM all used ullage burns. In fact the LM computer automatically added a 7.5 second RCS ullage before descent engine firings to reduce the workload of the crew.

Not really from slosh, but from the fact that the ascent engine was not gimballed, therefore the only way to steer was firing of the RCS, causing the rocking motion as it chased its target orbit.

That would be a waste of her precious research time. We need her to use her sexy geek time PROPERLY and do REAL research. That's her brand and that's why WE LOVE HER. That's what made her famous. That's why the majority of us is here for. We need her historian geeky smart-fu powers. We need her to analyze the records "WITH SCIENCE" :). Not to be provided with childish retarded comments on retarded movies like The Martian ,Apollo 13 or fuck know what else. For that we have the muppets from What The Flick?! (run a search on them). There's plenty of retards on KZfaq doing giggly reviews of a even more retarded brain dead movies.

Skip Morrow - I'll second that. Gorilla No Baka - actually no, I was taught that if you can't say anything nice, say nothing at all. So as a friendly suggestion I'd recommend visiting grammarly.com

Very funny!

clayman0 skycade A minute of silent of a great model.

honestly it's a 10/10 model if you have an exacto knife 4/10 if no exacto knife

What is this model? Name? Thank you.

i don't actually know sorry! i got it from a gift shop in the museum in Washington DC. i found it on ebay for a really high price i'll continue looking

okay it's called the "inair e-z build model kit saturn V" search that and you should find it

That has nothing to do with my comment.

itsabig you’re thinking of the V-1, not F-1

Pete! Pete! Pete!

The Lego model is very high quality. Separates into all the stages, tons of details. Impressive size. $120. Highly recommend it. Make sure you don't accidentally get the lower quality "Lepin" Chinese knock-off.

I have one of those too. Its nearly 2000 pieces so its a good 5-6 hour build. Very impressed with the little details they managed to get into the lego kit.

The Airfix brand Saturn 5 kit is good.

Kevin Moore It's 1969 pieces, get it? 1969 😏

The answer is: "it depends." One choice already mentioned is the Lego model. Not too hard to find, but expensive. On the other hand it's pre-painted and no glue is required. ~1/110 scale. I prefer other solutions because it is obviously a Lego kit. Usually runs $120-$140. Airfix is a good choice. 1/144 scale, hard to find, slightly more accurate than the Revell/Monogram kit. Runs about the same price as the Revell/Monogram kit at $60 + shipping, depending on seller. Then there is the famous Revell/Monogram kit. 1/144, based on the Block 1 design, so the command module is not accurate, and the paint instructions match the first series. She did a video on that paint scheme at one point. :) Easy to fix, and the model is designed to come apart stage by stage, as is the Airfix kit. Usually found about $60 + shipping. If you're willing to spend the $$$ to get the Lego kit, you might want to look at the Dragon Saturn V kit. It's a whopping 1/72 scale, price runs close to the Lego kit. There's the AMT kit. It's 1/200. One version has all the manned boosters from Mercury to Saturn 1b and Saturn V, and the other is a Saturn V by itself. The former is much more expensive. The latter runs around $20-$25 + shipping. The quality & accuracy are good, even if it's smaller. Actually the inter-stage sections are more accurate than the bigger Revell/Monogram kit. Finally there are some small-scale (c. 1/300 or so) toys which feature separating stages, if you don't mind the small size.

The arms up the side of the rocket are indeed for umbilicals topping off the tanks till the moment of launch. Look up "Saturn V launch camera E-8" That will show you four very sturdy hold down arms used to keep the beast locked down till go-time.

There were hold down arms at the base of the rocket that kept it on the pad until it (just) achieved full thrust. These could not hold it down indefinitely, though, and released as soon as full thrust was achieved.

katie_incredible The initial acceleration of the Saturn V was one of the most gentle of all rockets, with engine thrust barely exceeding the weight of the fully fueled rocket at takeoff. The force needed to hold it onto the pad would have been a relatively small fraction of the rocket thrust.

The thrust at liftoff was 7.5 million pounds, with a fully fueled Saturn V weighing 6.1 million pounds. So the four hold down arms restrained 1.4 million pounds of upwardsness, an impressive feat!

And from the time fueling was complete up until engine ignition, they had to withstand 6.1 million pounds of downwardness. That's even harder. The hardest thing was making absolutely sure they released simultaneously, if even one had been the slightest bit late, the rocket would've pitched over in that direction.

Niall Kinsella lol

haha good one

She meant back to the studio (Mr. Kubrick's waiting) :D

Speako!

O.K....I'll leave out all queries out next time. :)

Cospiracy, is that about cosplaying pirates? ;)

sesc79 yes!!!

I read somewhere that the worst thing they got wrong was the color of one of the Corvettes... :)

Where in the world are you getting these numbers?

53 incase of mistakes but this is for entering the sphere of influence of the moon not landing aka going to the moon

You are correct on the 53 engines were needed to get to the moon 'and back' as in Apollo 8 style. But 36???

ken assuming you do it perfectly only 36 because they put the craft on a trajectory to go to the moon and in case something fails they'll flyby and return so if you get that trajectory perfectly with no need for corrections you can go to the moon then just glide back

I believe then the number would be 38. Two roll thrusters would have been fired on the SM to even out the Sun's heating effect on the SM/CM.

DATING HARLEY QUINN 😂

Get a girlfriend.

Actually Amy does not do a whole lot for me. Why? Because I tend to compartmentalize. I work with a lot of good looking women. Also, your avatar is named after a psychotic murder in the batman world, perhaps you'd think one of those Manson women were cute, too. Me? I'm watching a new era in space exploration starting. Amy is talking about the 50+ year old Saturn system. She also spent a lot of time making excuses for the SLS not launching. Given that NASA is merely adapting proven engines and technology from the Shuttle to the SLS it's rather distressing that $20 billion a year over 7 years has not produced a flight. SpaceX and the Russians do more in a year than NASA's other expendable vehicles combined. I was hoping that Amy would spend a little time on Falcon Heavy. Also, I was a kid when we went to the moon and 95% of the stuff she talks about I already knew decades past.

This video has more double-entendres than all the Carry On movies, but that's science!

I think that she might have a space book on her bookshelf. Maybe even two space books!

Me to Sat on the front porch with my dad and saw it go across the sky was about 8!!!