How NASA's Apollo 14 Fixed A Critical Problem Using 'Keyhole Rocket Surgery' 

or working as a mechanic and overhauled the engine thru the exhaust pipe

well... I might motion a certain early webnets events before whatever when the BBC micro programme showed where end to end visuals of a house and a model of the house in a window view outside from the house window...

Nowadays they do some surgeries in the abdomen on women through the vagina laparoscopically. That way there's no scar left behind afterward. It's truly fascinating what all they can do using small incisions and a laparoscope.

I must hear this joke

@@josephneider7332 It's kind of long to include in a RU-vid comment, but a Google search for "gynecologist hired as painter" (without the quotations) will bring it up for you.

Then you should get over to Adam savage's channel. He's got a number of good ones 👌🏻.

Well, it was an easy fix. It's not exactly rocket surgery. Oh wait..

Nothing about this video existed.

That's good advertising!

@@icollectstories5702 Yes , they provide many different lies to get people to believe them and to have them donate money to the cause 🤣😜

there is no way scott has access to such advanced technology, it must have been a 3d simulation like the moon landings!

You doing okay yet? I'm still gasping! :D

Now I have to go back to the beginning again to check it out! :D

I had the same thought...

It sounds like the joke about the mathematician boiling a pot of water. That would almost sound like he deliberately ran the engines until the fuel was low, then landed!

I hate it when my parts are left on the moon!

Seriously, I can feel it too. I'vewatched these clips my entire life, noticed the wobble, and thought nothing of it. I 💓 Scott Manley.

surprised neil and buzz didn't get sea sick. neither of them were navy pilots.

Oh yeah? I'm a rocket surgeon!

For decades I’ve been dad-jokingly mixing metaphors with “Come on, this ain’t rocket surgery!” Thanks to this video I will have to up my dadjoke game.

* singing * ...That don't impress me much...

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-THNPmhBl-8I.html

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-THNPmhBl-8I.html

@asdrubale bisanzio remember you are just soldering a delicate part of the entire lunar module, no pressure. What could go wrong uh?

@@gean31 "Remember, Joe, if you screw this job up, the crew dies on national TV. No pressure. See at the pub later, yeah?"

No it's more like "ta dead ça chacal " Dont thanks me 🙃

@@benji37 Sorry kid, that means nothing.

@@benji37 That's literal word mush.

I looked it up, and it's a fun read, though the quote you mentioned is more in the middle of the memo. In the memo, he says that the mission profile for Apollo 9 guarantees that the master alarm will go off unless the system is activated after ullage. Though he concludes, "I guess it will be standard procedure to punch it off if that happens. But, where this is just an annoyance on D (Apollo 9), it is dangerous on G (Apollo 11)."

a case of an abundance of caution being dangerous? (master alarm going off too early)

@@oldfrend I mean I can see what they mean there, you really shouldn't get your pilots used to just ignoring the Master alarm because it goes off for low (not out of) fuel.

Indeed. It's not just what they achieved, it's the limitations of the technology they had available to achieve it with.

@@Akm72 Same limitations today.

You out the bottle around the ship

Same as apollo 14. It is assembled in there. A true masterpiece made by the best artists.

Make sure the bottle is large enough.

@@drhklm7148 There is some pear brandy that bosts a bottle containing a whole pear. Of course, one takes the bottles out to the orchard and puts them over the budding fruit.

Not sure moon gravity is relevant when landing, as you are in free-fall when not accelerating (i.e. "gravity" is what YOU make it). Gravity is mildly important when leaving the moon, although your acceleration tends to be mostly straight up so sloshing isn't as bad as it is in free-fall.

@@icollectstories5702 I agree there are no gravitational effects during free fall. Baffles don't have any effect either. However during deceleration and hover they do. :)

@@ebenwaterman5858 The point is whether you decelerate at 0.001g or 5g is at your discretion; moon gravity doesn't apply until touchdown, at which point fuel feed isn't vital. Launching from the moon is a similar situation, aside from assuming that you've stayed long enough for the tanks to settle. Asteroid departures should probably not make this assumption.

@@icollectstories5702 Well, not quite exactly, as during the final descent you'll have to pull > g/6 in order to decelerate and land -- consider that a perfect hover "feels" the same as being on the surface to your fuel tanks.

@@icollectstories5702 The LM was only in free fall during Lunar orbit, it was a powered descent from orbit all the way down until the last three feet when a contact probe touched the surface and the descent engine was switched off. The LM then dropped the last three feet to the surface.

They did surgery on a rocket Bottom Text

LOL right?

Will you work for SpaceX or NASA?

@@conorm2524 neither, I am not a US citizen or PR. *crys*

@@thunder852za ESA?

The term CFD is ringing bells in my head but I can't remember why.

@@ze_rubenator perhaps one day... I am just a Aus citizen living in South Africa. 😅

All things considered thats actually a lot.

It is definitely an improvement

mechanical gaslighting.

From abort actually.

@@yastreb. Depends how quick you are at pressing the abort button. ;)

I think the term is... wholesome xD

They dont have such problems

Just attach it to the bottom and then slide it up until it disappears.

Perhaps it was for non-cryogenic fuel (UDMH/NO2), but then the problem shifts to chemical resistant material... In all cases would like to hear more.

It's a highly technical process (literally rocket science) where the 'eng' part of the tank is moved and 'larged' a bit so that it will hold more propellent. :)

i was just about to comment this. It would be nicer if you put the timestamp of 5:25

@@mikefochtman7164 the pipe stretcher!!! I knew it was real!!!! You nasa folks!!!!

It's a combination of "engorged" and "enlarged". Where engorged means that something swells because it is filled with a liquid and enlarged means that something becomes larger. Englarged means that you enlarge something by intentionally filling it with a certain liquid (either under high pressure or not).

it's a typo i think

It’s pretty crazy how much of the Apollo (and earlier Mercury/Gemini) hardware was done by hand. The ~3000 cooling channels on the F1 engine bell was all brazed on by hand for example. They also designed everything on paper with slide rules and compasses. No CAD, no CNC machining, no fancy computers (the flight computers were literally made of hand woven ROM), and no fancy materials like carbon fiber composites.

@@eyeborg3148 Not exactly true. They had calculators and such. Manual input, to be sure, but they were available. The first real computers were built in the 40s, the Eniac and Colossus.

@@scottslotterbeck3796 Exactly true. No CAD. No CNC. The computers were not fancy. Programmed in a near assembly language written for NASA use. They couldn't program what they wanted calculated they had to program how to calculate it. Calculators were mostly 4 function electromechanical adding machines. Multiplication and division were by repeated addition and subtraction. Electronic calculators were just starting to exist. They were large and still only 4 function. No trigonometric functions. Scientific calculators started to exist after Apollo 13 had flown Everything had to be calculated either by slide rule or writing a specialized computer program and getting computer time ( not always possible it was a limited resource). Second edit. When they did become available electronic calculators were largely U.S Japanese collaborations so NASA may have wanted to avoid them. Even the scientific calculators including Texas Instruments ( but apparently not Hewitt Packard).

@@eyeborg3148 Not just ROM. The RAM was also magnetic core. They did have a mechanical core weaving device. The difference between RAM and ROM was that ROM had only the read grid, each core had an x-y location, and RAM had another wire to write. A lot of the process was mechanically aided component assembly, then hand "assembly assembly" then likely machine assisted welding. The welding machine program was hard wired.

@@javaman4584 CuriousMarc’s many videos about the AGC and its design would be even better I’d wager.

It is probably to trap a small amount of fuel right on the tank drain, so that they can make a short burn to settle the fuel before starting a long burn to decelerate.

@@Kineth1 Interesting, that'd be very similar to the function of Starship's header tanks.

Also the 109s inverted engine helped with this