Making a Rocket Nozzle - Simplex Ep 3
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- เผยแพร่เมื่อ 10 พ.ค. 2023
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5:45 "machining outside is a beautiful peaceful experience" said no neighbor ever
😂😂
🤭🤭🤭🤭🤭
This dust is really, really dangerous. So i'm doing it outside so everyone can feel how dangerous it is.
I think between this and his parachute tests their used to it by now
@@O5MO It's just graphite, not dangerous to the environment but definitely dangerous to your lungs in large quantities.
This video is beautifully shot. Impressive work! Rockets are cool.
Thanks Destin!
No way smarter every day is here!!!!!!!!
script: "with a ton of clamping force" scene: 4 quickgrips trying their best.
I used to work for Rocketdyne in the 60’s where we made the attitude control thrusters 25, 75, and 100 pounders. We made them out Ablative material with a Graphit throat. In those days we used tracer lathes. Those were the days.
To be able to work at Rocketdyne in the 60s, literally putting men on the moon. Definitely seems like one of the most rewarding jobs in history!
How old are you mr.?
@@leonardoraz6375 at least 85 I guess
@@leonardoraz6375 84 I went to work at Rocketdyne in 1963
Legend! Thank you for your work, sir.
13:25, I think, you need a hydraulic press in the shop 🙂
Harbour Freight sells: "12 ton H-Frame Floor Shop Press" for $170 (Instore Only, must be heavy to ship)
hydraulics can leak down over time, so you'll have to babysit it and monitor the pressure
My suggestion would be to just find an old arbor press that's large enough to fit most of this stuff, mount it on a heavy bench that will allow the passthrough to reach the ground, and then you can either put things that fit on the bench, or larger things under the bench for clamping. to clamp with an arbor press, you just hang a weight on the lever arm. it's a mechanical press that will get you enough push to get friction fit parts together without going overboard
Using machine tools outside must feel like one of those showers out in the middle of the desert. Total freedom.
Buy a larger lathe, your time is valuable, you won't regret the upgrade. A Shars style quick change tool post is well worth the additional cost.
Love this format, shorter but more videos. Keeping in the errors is really a great way to teach too. Keep up the excellent work.
Bernoulli's genius can only be matched by Newton and his famous description of the 3rd Law of Motion:
"Alright, so check this out bro; It's like, for every action there's a freakin' equal and opposite reaction, dude! So, like, if you pushin' sumthin', it's gonna push back just as hard. For real, bruh...no cappin"
Isaac Newton, 1687
Add in Charles, Hook, Boyle… they were all contemporaries, regularly spoke to each other, and most of them were founders of the Royal Society. Oh, and with the exception of chemistry, invented all the science you learned up until university out of whole cloth in a single 30 year period. Scary smart dudes. At least as smart as Einstein’s clade.
This is my new favorite series. Such great quality production and info from a passionate presenter. Thank you for your channe! I love it.
Joe, your work and videos are great! Keep it up and I can’t wait for the next one! When you had the lathe outside I imagined what was being said at neighbor’s house, “ I’m bored. I think I’ll look out the window and see what Joe is up to and what kind of costume he’s wearing today”.
I'm really just here to put on a show for my neighbors :)
As a machinist i appreciate your machine struggles. Good looking work, I've made worse looking nozzles with nicer machines!
Also as a machinist, all the things he claims are "stupid" are perfectly normal machining shenanigans. Figuring out how to hold weird shaped things that are just slightly too big for your equipment is what separates actual machinists from mere CNC-Go-Button-Pressers.
As the primary machinist on my school's robotics team, I can relate to lathe troubles. The lathes we use are literally WWII surplus (or came with the school when it was built in the 50s), with the original leather drive belts. This is compounded by the fact that all our drill bits are pretty dull, which makes for a wonderful combination
Nicely done! While "ring of bolts" is popular among amateur motor makers, I always preferred internal snap rings. Might not work in your case, though. Also, I think I've mentioned before that using a *cheaper* graphite grade (the extruded stuff) will often result in a nozzle that is less prone to thermal shock on start-up. I learned this the hard way. Bought the highest-density iso-moulded graphite I could afford, turned some gorgeous nozzles. They all popped at start-up. Did the same profile in extruded grade, and that problem went away. The more you know...
What diameter nozzles?
@@chrisnorth3458 various. Including 75mm and 100mm
Awesome, thank you for all the work you put into this series
Indeed, thank you!
Great video. I worked in a graphite shop for 16 years turning graphite on both CNC and manual lathes. And NEVER once wore a respirator or even a dust mask. I'm 62 now with no respiratory problems at all and all the dozen or so guys I worked with have had no problems. Not saying it was smart (definitely not smart) an ounce of prevention worth a pound of cure. I so enjoyed the video this is great tv please keep it up.
im not asking to turn this channel into a machining channel, but can you show more machining? its very entertaining to see you machine parts outside in the nice weather. awesome video.
"The worst of both worlds, a hybrid."
Those of use who work with hybrids like to think we enjoy the challenge. :)
Excellent video. I will definitely be making this part of our high school rocket engineering curriculum. FYI we build hybrids. Thank you for your content and your passion.
Love your content man. Just a machinist here giving you a potential tip. If you need to turn something bigger on your lathe you can try using a boring bar upside down and running the machine in reverse. I had to do it a few times at work because it was at the machine's capacity lol. We actually had to modify the guards on the lathe to fit the part in.
Check out the sharper carbide inserts for non-Ferrous metals. They come very sharp with high rake angles and will take that material off effortlessly.
I get using equipment outside. Pro tip: high velocity fan. Scorching summer heat = not a problem when there's a constant 15mph breeze blowing across you. Bugs can't fight it, heat no longer matters, plenty of light for whatever you're working on. Unbeatable.
"A rocket motor, whether it's liquid, solid, or - the worst of both worlds - hybrid [...]"
Solid opener! :D
I love the characteristics of your method of picking nozzle geometry! :D
Little tip for the cross slide on the lathe, you can 3d print a drill attachment and get a smooth surface finish with minimal sanding. Try it out next time!
"that's my nozzle. And it's a pretty good fit"
my new pickup line
Pro tip from a tool room worker when turning larger stock than your lathe can handle. Use a boring bar from the back side of the part turning backwards. Also makes chamfers and tapers on external flanges easier.
0:48 "A rocket motor that is solid, liquid, or-the worst of both worlds-hybrid..."
Wow that's so offensive to hybrid motors (I 100% agree with this statement)
These episodes are so well done, thank you Joe
If you use an 85 degree chamfer the inner edge of the rocket casing, it might be easier to insert the o-rings and nozzle carrier without nicking the o-rings. In addition, I couldn’t tell if you were using lube. Parker makes a silicon lube I have had good results with. Glycerin is another good possibility as long as your materials are compatible.
Graphite isn’t abrasive; it’s actually used as a lubricant in numerous mechanical appliances. When I worked for a company that specialized in injection molding tools, I would just smother the graphite on the guiding pins of the machines. I have to tell you, it works like a charm, often better than grease even. There are also spring-loaded brass bolts that have graphite pressed into them. When there’s mechanical stress, the housing is abraded and releases the graphite for lubrication.
But you're right, it's really messy and can pose a threat to certain types of electronics. And it's impossible to get your shop clean afterwards :D
I appreciate the details and and the great explanations!
Having followed along for a long while I find that what I enjoy most about these latest videos on the process you are developing.... Is You having a blast in the videos! 😊
It's great to see that side of development too since so much of your other videos have me biting my nails and sitting on the edge of my seat. Thank you for doing this. It's great to see your constant progression and that you remember to have some fun too 🎉
Fascinating journey so far, I'm so glad you're making these videos. Thank you!
"thank the sponsor of this video, which is brilliant" made me smile a bit.
I love this simplex series
Hey I’m a machinst when you’re boring you can rough out with big cuts .03” depending on chatter from your boring bar but once you get down to final cuts slow is smooth .001-.004” but this is assuming your lathe has enough rigidity to stay accurate. Also a machinist handbook will tell you your slip and press fit sizes (among every other thing on earth) which can help avoid tolerance issues as you know exactly what you need. A tight concentric bore gives you more accuracy this inherent efficiency
I used to do hobby rockets when I was a kid... like 6-7 years old. Your channel makes me regret not sticking with it.
Good to see you both back.
I too play with all different kinds of electronics. At the moment the TomTom 550 is on but just got a mount to fit the bmw navigator fitting.
Absolutely loving this series, can't wait for Ep 4.
Loving this series. Just enough information that it explains it without getting too bogged down in the lingo/details
Its both crazy and amazing how much work goes into making a rocket motor
G'day Joe.
For fitting your nozzle carrier with O rings installed into a liner.
You might consider using a tool called a 'ring compressor'.
Although the device is primarily intended for inserting piston and ring assemblies into the cylinders/liners of big diesel engines it might meet your needs too.
Check out old South Bend lathes! They are phenomenal
I have a 1926 South Bend model C 9” lathe I restored and it’s still cutting great to this day!
Finally! Been waiting for the motors part for years, great work!
Great work. Currently learning in Collage how to design a rocket nozzle. Nice to see this in a real world example ;)
Been watching for years. Amazing to see how far you've come and how driven you've remained through the failures and successes. Also, very impressive how far you've come in engineering especially since I believe you got your degree in music, right? Anyways, I know you'll go on to accomplish great things. Keep the vids coming!!
4:43 There is a whole episode on how to deal with procrastination hidden in that little bit and I'd love to watch it.
Another excellent video. It's great to see the process. Can't wait to see Simplex soar. Keep up the great work. Ad Astra! :)
6:15 Pro tip for getting smooth results from your cross slide, knock up a tool that let's you drive it with a cordless drill.
They make cnc China mini lathe replamcnet motors with ball threads too for under 40 bucks 10 years ago last time I could afford mini lathes. Buy alot of it is rigidity m that said if the lathe is anythkjt at all should hlbe able to adjust/replace the ways bearing pads. The factory ones are horrible hell again ack 2hen I coild sfford it my mini mill the collet tool holder was 8mm out of round from enter had a rig fab shop lathe it straight for me so I could make swarf ASAP 🤣
Looks like the way adjustment screwed are way too tigjt they take very precise and tedious fiddling to get just right but should end up butter smooth and be able to be turned with just 2 fingers and no backlash
If you’re going to keep making more of these you can get a concrete boring drill which is a hole saw that is deep enough to cut 6” deep or more.
You can also use isopropyl alcohol to lubricate the o-rings and leave no residue. It doesn’t damage viton or most other common materials.
Much love, thanks for the hard work anf knowledge.
Great video series, it takes me back to the 1960s when a kid couldn't buy an Estes rocket engine in california... without an adult, a stack of paper work and a sign off by the local fire department chief. Firing them was a whole 'nuther layer of misery...
Yes we made our own; yes I do have all my digits.
LOVE YOUR WORK !!!!!!!!!!!!!!!!!!!!!!!!! keep going !
just as a recommendation for rocket flights, you should put the flight duration/motor burn time up the top. Your channel is the best!
Thank you Joe! Your vids are awesome!
Love this series it’s epic ❤❤
It's amazing that you do all this.
Man this so advanced. Thank you for sharing!
Love this series!
“It’s a direct quote - what are you going to do?”
Lol
Awesome, and hilarious. Nice job and thanks for the video!
I love your work so much, keep it up.
If this were an 80's concert in a backroom of a crappy oyster bar, I would be the older guy with a mullet screaming "More, we want MORE!!!" TLDR I like these videos. 😃
"Graphite dust is highly abrasive." Isn't graphite used as a dry lubricant?
Good question! Graphite is used as lubricant.
I think he heard something about carbide dust and got it mixed up.
@vpupkin97 wrote a comment describing how graphite paste can be used to facilitate grinding two hardened metal parts against each other for a near perfect fit.
When graphite is clean and dry, it acts as a lubricant. Mix in some oil, and it becomes a carrier for abrasives.
The ammount of calculation you have done through this channel is insane. rockets are super cool!
Oh boy! You are making history here! As usual your videos are very detailed and at same time direct to the point! Please keep doing this amazing work! You "rocket"!!!
For those slow increments on the lathe, This Old Tony has the solution.
Use two small T-welded iron bars and a screwdriver with speed control.
For getting smoother tapers with the compound, of you put both small handles back on rhe wheel (looks like they were removed), you can chuck the base of a T-shaped piece of metal into a drill, and use that to turn the handles. As long as you have the drill in low gear and keep thr speed fairly consistent, it should work better and give a more consistent surface finish than turning the knob by hand.
Awesome stuff. Good job!!!
I love your little eBay lathe! That weather looks gorgeous too. Good excuse to be outside in the sun.
The parts turned out great considering the machining troubles. Looking forward to the next part :)
Your nozzle angles are within reason. One thing to consider is a smaller divergent angle reduces cosine losses, aka some of the thrust being wasted going somewhat sideways out of the nozzle and not pushing the rocket up. By lower I mean something like 10 degrees vs your 15. Although a lower angle means a longer nozzle, and thus more weight, so it’s a trade off.
Amazing stuff, as always!
This is intense! Serious work.
I'm learning every time I watch your vids!
A small press would help with your nozzle assembly (no dancing required)...a taller press would help installing the o-ring parts. I never thought about all the uses of a press until I spent time with a friend of mine with a really nice shop--he constantly uses his...basically a frame with cross tables and a bottle jack.
Suggest getting an arbor press. Small 1/2 ton, and a larger 3-5 ton. Probably the most usefull tool in the shop. Saves dancing on top of critical one-off parts.
Very impressive. And filming it while working on it makes the task about 10X harder.
We needed long hole saws at my shop and what we did was weld a piece of steel pipe into a cut in half holesaw, worked perfectly. You could do that for the phenolic insulation
Machiniste trick, if you want to archive high tolerance, leave a little bit of material ( 0.001" or 0.002" ) and do the rest with sand paper ( turn your piece with the lathe and apply pressure with the sand paper), start with 80 grit and move to 120 grit. That way you can archive a good tolerance.
Dude forgot to stop... You have to admire the passion in the man. Please don't change.
1:07 shock diamonds! ! Awesome
Awesome project, awesome work, awesome video, keep up the good work. 😄😍
really cool series
Another great episode Joe 👍 I wish you many more days happily turning materials into designed items outside. You’ll need a hat added to your PPE though come Summer 😊👍
3:35 I am sure the neighbors agree with you 😂
awesome joe , keep it up man
Thank you for sharing, your video is very good and amazing
This guy feels like the next amateur spacex
"amateur" is honestly an insult to the type of batshit crazy stuff Joseph Bizzlington is doing here.
@@mirandahw well, he is a amateur, he has a degree in music not in aerospace. Being a amateur does not mean you can not do awesome things
@@ekkekrosing8454 Technically, he makes money doing it through the channel. So, you could consider him a professional... But that's just semantics.
You can’t say he doesn’t look a little bit like Elon musk too…
Who do you think was the first Amateur SpaceX. :D
Mad man love it.
Great content!
Have you tried wet pouring your mix into the casing, tooling installed, pull the vacuum on the pre-cast material that’s already in the case. Maintain the vacuum through the cure and then remove the tooling. No voids, perfect cast, tooling form is removed and you have a near perfect motor casting ready to shit and git.
Excellent video
On turning those tapers: Don't you watch This Old Tony? Power-drill cross-slide attachment!
Nice remark abiout the structure of the linen phenolic material
In technical school I learned that you shoulld make gears not from rod but from sheet material
this is awesome, just wish I could see more content.
Dude you are such a legend. Have you thought about sharing your knowledge and process of iteration with students? You will without doubt inspire even more minds.
Thanks Joe. You're sort of single handedly making rocketry cool again.
You might think about making a piece with a conical inside bore to help you slide the cap with o-rings into the case, rather than risking pinching and compromising an o-ring. IC engine builders use them to compress piston rings during insertion of the pistons into the bores of the block.
Great work on the machining Joe!
Thanks Brice!
Rigging up a battery powered drill to the compound slide handle is a good way to make the surface finish uniform.