Massive 3D-Printed ROCKET Slugs - First Test
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- Опубликовано: 13 сен 2024
- A viewer designed and created some rocket slugs for us to test. Will they be more accurate than the Gyrojet rocket rounds? These are quite large, almost twice the size of a normal slug. With these tests, I am sure we will get many ideas for improvement for future designs and maybe another viewer will submit their design for us to try out.
I expected many failures with these, but was pleased so many ignited and most were quite accurate.
Thank you Patreon supporters!
/ taofledermaus
![MISSING: SLIM SHADY [Expanded Mourner’s Edition Trailer]](http://i.ytimg.com/vi/xh8qgHrOO1g/mqdefault.jpg)
You’re firing PLA printed rounds with no control on tolerances, packed with candy rocket fuel, made by a stranger with no liability ... and you’re worried about some flames in a nearby bush! Love it!
This is the beginning of a fully functional Bolter
It's totally doable just upscale a gyrojet to 40mm and add a warhead oh I want a bolter 😭
@@weirdscience8341 I want one too but the magazine would only be able to hold 5 rounds tops if it were kept in proportion. .50 Cal would be better but 20mm might work as well.
At this rate it really will take till year 40k
The emperor protects
It’s canonically the correct gauge too
Need faster fuel.
Time of flight is under 1/4 second, so rocket-motor should be burned out before then, no?
Ammonium perchlorate + 2-part silicone rubber = 'pencil eraser' fuel grains.
By adding trace amounts of powdered red rust, you can modify the burn-rate.
Cast a hollow-core fuel grain directly into the printed slug, allow it to cure in place.
Prime the hollow-core with black-powder, load yer shells, Robert is your parents sibling.
Lol. Bobzyerunkl
I've been playing with yoyos cool stuff u got any good tips because I think my last attempt was wrong as under thrust it became very unstable I think my center of pressure equations were off
Is that a twist on "Bob's your uncle" ?
I know im late to the party, but is this something you yourself could do if you were sent some 3D-printed slugs? cant really send explosives overseas here from Holland. Are you in the States by any chance? because i wouldn't mind doing the 3D part if you could do the pyrotechnical aspect.
regards, maurits
Robert's the fellow who buggers your Auntie!
You guys had sooo many chances to pick up all those hot bullets 🔥
lol there's only one professional hot bullet picker upper.
TAOFLEDERMAUS Hahahaha
"Professional"
Lmao!!! 😂😂😂
Hahaha Edwin 😂👆🏻
Taoflederslugs... More accurate than a gyrojet!!!!!!!! On sale now only 49.99 each.
M O'Brien Magnum Research would sell them for $250
I mean that's cheaper than gyroget
Works 80% of the time either. I want something more accurate and more consistent than Gyrojets.
An interesting first effort on rocket slugs. The propellant needs to be much more active and faster burning -- the slug is almost at the target before any propulsion even begins.
4:30
That body of water is actually the Pacific ocean, and is several hundred thousand miles away.
There was no danger of him shooting the ocean
Can't be that far as it would nearly be at the eyelevel vanishing point... Even something as big as the pacific ocean vanishes when a long way away (just as it rises to eyelevel - never above, unless concavity exists) jk.
So the land behind the water is Japan then?
@@EndingTimes0 Obviously not. He said hundres of thousands of miles, so they're clearly not on Earth. I wonder what land and what ppl live there
The radius of Earth is only some 12,000 miles long - from the north pole to the south pole.
hundreds of thousands of miles would be like the distance of the moon
This is going to be an awesome video :)
I like that hard drive centrifuge :) I hope you revisit this theme.
Haha, nothing but the highest-tech equipment!
BRAVO!!! Standing ovation for the Bear. Nut shot and head shot, but the tumble over, and hitting the wall and then falling performance was Flawless.
Great job with those prototype slugs. Needs some work, but interesting idea.
Not sure how safe I would feel, sitting behind the trigger though.
Then again, considering what @Officer Gregg has been through recently, I guess this is rather dull.
Gregg. Once again, I'm so glad that you and your family are safely back home
Haha, yeah, I've gone through a few tables. We've busted up the plant stand several times and Danny keeps straightening it out and re-welding it. We use that stand to try to keep the slugs from hitting the table. lol
TAOFLEDERMAUS
Genius!
Joseph Scharfenberg The type of propellant might have to be changed to get the boost in impulse. It also might need a change in material to a more durable variety to compensate for the more sudden shift in velocity.
I'm working on a second version now and I plan on using a nozzle, larger core burn and add iron oxide to the fuel all to make the thrust higher and shorter. I also plan on adding more ballast to the front and strengthening the week point at the neck.
Dominic Cacace Looking forwards to seeing how the new design turns out. :)
With this info someone should make a modern giro jet made out of metal with a solid exaust chamber.
Like a real rocket :3
It shall be called the rocket slug.
Check backyard ballistics
Gotta love that you also put measurements in metric units now!
Thanks! Love your videos :)
Howbout jamming a 9mm case without primer in the back end to make a nozzle.
the is exactly what i was thinking
You'd have to use the primer hole to form a Venturi, but it could be done. A primer pocket wouldn't make a very good venturi on it's own. There's a reason why Rocket Science is right up there with Brain Surgery on the sliding scale of precision. They both either go perfectly right, or horribly wrong.
And possibly turn the round out of aluminum?
Well just compressing the exaust will massively increase the effect of that kind of fuel, at the cost of burntime, but as is they would have to go like 500 yards to burn out. The fueltype used basically burn faster by the pressure its in, in open air its mostely just smokepowder. Fully enclosed it can rupture steel tubing, if the nozzle is too narrow.
Obviusly as mentioned in the replies an actual nozzle would help it both stabilise and create more thrust, but theres length to consider and safety if you get in to regions of pressure vs propelleant charge that could set off all the fuel before the rocket leaves the barrel.
Jamming in a 9mm casing would give you an indication of the burnrate on the fuel vs curent rate. Still leaves room for improvement, but its fairly easily done so why not give it a go.
Right, you could do that (Just jam a casing in there) but it would need some work to make it an actual stable rocket. Just coning out the primer pocket with sculpy clay would help a lot. Also, a forcing cone on the inside... The more work you put into it, the more likely you'l actually get something approaching performance, but if it doesn't light, it ain't a rocket. It's a hollow plastic shell, with a brass lining.
Brought to you by square space viking war of audible books.
Haha, mattress in a box, dinner ingredients in a box, etc.
TAOFLEDERMAUS box in a box
Only you guys would test stuff like this. That's what keeps us interested. There are countless channels out there showing various mass produced ammo through hundreds of firearms, but only Tao Fledermaus tests the weird and wacky. Love you guys. Also, no one else has Breanna and her sister.
Thank you Mike!
Love the Space:1999 theme music.
Thunderbirds.
@@carbon1255 exactly
Gyrojet 2, ballistic boogaloo.
Love your channel. Your audience is the 12 year old in every grown man (we all did crazy experiments as kids) but with the safety element. Keep it up.
thanks
Don't let OG near that pond he might go snorkeling lol
🤣✌️
He'll end up in Baja
@@OGsDangerShow to soon? 😂😂😂
to late for that !
I just watched his account of that I'd be worried because of that film midnight express but all the Turkish people I know are ok
That looked like the base bleed concept for artillery. Those shells had a small amount of material in a section of the bottom of the shell. The intent was not to provide thrust but to break up the drag immediately behind the shell and give it a little more range. Unfortunately this shotgun round was so unstable that even that effect didn't have a chance to work properly.
Awesome video as always Jeff! :D Liked!
thank you Jesse and Mike (don't get any ideas of shooting each other with rockets!)
Did you even watch this video? Nothing worked. They tumbled, produced no thrust, and was a complete waste of time to watch.
@@huaahhggg9507 unsuccessful tests can yield as much if not more useful data than successful ones. It's called learning from your mistakes (like the one in your profile pic)
The only thing cooler than a gyrojet shotgun is a gyrojet artillery piece .....
*looks at the Sturmtiger*
the K5 railway gun had rocket assisted shells
We have those it's called RAP.
1973Washu wow I didn’t know those were rocket assisted.
himars
cdawson198600 there was a version that was rocket propelled. Could only fit 14 kilograms of high explosive in them though. Most rounds fired were traditional high explosive rounds.
Love the Thunderbirds soundtrack as well guys - keep up the good work
You guys should try printing them horizontally. That will give the print increased strength over a vertical print :)
We need a collab between TAOFLEDERMAUS and Matt from Desecrati-, I mean Demolition Ranch! That would be a RUclips dream come true!
you're gonna need faster burning propellant than that, although i wonder what effect the exhaust filling the low pressure behind the projectile has. i think the ballistics of an actual rocket need to be different from a ballistic projectile, since ballistic projectiles rely on as smooth as an airflow around them as possible to stay accurate, and rockets don't care about turbulent airflow behind them since they are dominated by the thrust
Shooting stuff that doesn't bleed is so much fun!!! Also: somtething even more fun is learning how projectile weapons work... gotta love these guys🍁🍁🍁
We're getting closer to space marines, praise the god emperor
perpendurcular 720 and we are changing the name of our armed forces to fall in line with space force. The navy will now be water force, the army land force, air force will remain unchanged, marines will be punch force, and the coast guard will be swim force.
perpendurcular 720 touche I stand corrected.
The Emperor protects
Had a good feeling that I'd see a fellow 40K fan here. Well met!
I can't wait to see if anyone else has their own gyrojet designs to share with Jeff. Here's hoping one works as intended.
All we need is someone willing to make 40mm gyrojet rockets
Love the music.. Barry Gray " Space 1999 them tune " And the Thunderbirds tv theme
That poor bear. Got neutered and peppered with pellets.
I feel like this needs to be revisited to a degree with perhaps a rocket powered sabot that uses fin stabilization, you'd need a single shot to use it, so that the extra extra long shell can fit (thinking a 5 or 6" long cartridge)
However the pressure and recoil shouldn't be super bad,especially with a ported barrel.
Bear got hit on both heads.
I make model rockets with the exact same fuel and have been working on a similar design for quite some time.
From the experiments I have carried out, I have found that a nozzle is essential for building up enough pressure to propel the round towards the target, it also creates a stable trajectory.
The basic design I have right now is a 3D printed slug, similar to the one used here, but with a graphite core that acts as the motor with a graphite nozzle on the end. This means you can quickly swap out the motor into a different slug design pretty quickly, plus graphite is dead easy to work with.
One of the key things you need to get right is the centre of mass of the round and the centre of thrust. For a ballistic trajectory, you want the centre of mass to be smack bang in the centre of the slug with the motor, nozzle and fuel installed. The motor tube should not extend too far down the body of the slug itself - you want the centre of thrust to be more or less just behind the centre of mass. This will ensure that the round will fly straight once it leave the barrel, assuming that you have built up enough pressure on ignition.
The next feature I am going to try is pop up fins on the body of the slug. Spin stabilisation is great when you are launching a rocket, but when you have a short firing motor on a projectile like this, you need to treat it more like a really tiny anti tank missile. The trouble is that they are a complete bugger to get right on my shitty 3D printer. The other alternative I have been tinkering with is a saboted round with fixed fins, but I have had so much luck with that so far.
the thunderbirds soundtrack made my day
XD
These experiments are important enough that I pull them right up form the subscription feed.
Good to see OG back safe and sound :)
Thanks Tony!
This was awesome!!!! Please make more of these!!
Also longer range shots with more magnesium would be rad!!
I agree the bear shot was pretty cool. Those worked pretty well for a first attempt at these things. *OG* I hope you made Jeff clean your shotgun after those black powder shells. Thanks for the video guys. *:)*
Yar! Just remembered I need to go clean it! Thanks for the reminder!
Ha, I love the Space: 1999 and Thunderbirds music! Very fitting for these little rockets.
Space 1999 music .. nice
TERRIFIC STUFF
The main video music is Thunderbirds..
Gerry Anderson montage
@Joe... >>> *AGREED!*
Thank you guys for the best for my days from Texas
Must... Resist... Urge to... cause trouble with some model rocket engines.
When I was a kid, my brother and I lit off an Estes engine by itself and it cork-screwed all over the place and landed in a bush next to our house and caught it on fire. lol
@@taofledermaus >>> *I'M TELLING NAR!!!*
😁
How mint were these. I'd love to see these refined. Good shooting og, nice vid Jeff
Great video, maybe see if the Ballistic Machinist can make some of these from aluminum for you. Could machine them a bit nose heavy too.
^+1
sparkplug1018 heck maybe an extra long Breneke, hollowed out from the back a certain size, then have the machinist make a thin steel sleeve you could put a small potent rocket motor in, make sure the sleeve is threaded, abd have them machine a matching screw on back cap which tapers in a finned hour glass shape where the bottom half acts as a thrust focusing nozzle. The forward lead nose, twisted ribbed external shape and steel fins will help with stability, the steel liner will manage heat and contain the reaction, the nozzle will direct the force so it's more focused and potent. So it's not locked out before ignition, it should be put in an empty high brass shell with no wad or buffer since it won't accelerate fast enough to need it, and this way the primer alone should ignite it as the weight of around 400 grains resists the force of the primer so it has a chance to burn.
Maybe include a strand of cannon fuse or 2 to insure the primer ignites the rocket, just in case, it will be blasted out and won't matter if it's not needed.
I hope someone does this.
"an empty high brass *she will* "? Autocorrect get you or just a slip when typing?
@@evknucklehead it's my phone. It's the worst.
Background music at the beginning was Space 1999. second music was Thunderbirds.. Launch. Both scores were by Barry Gray. Both TV shows by Gerry Anderson.
"It's kinda like rocket science" - I see what you did there! Hehehe...
Space: 1999 Theme music playing in the background of your narration was priceless and much appreciated.
It's just my job five days a week
A rocket man, a rocket man
And I think it's gonna be a long long time
Damn - you hit those orange squares *dead on*!
Haha when you gonna shoot some of those C and D type model rocket propellant cartridges
I think the C and D engines are too large, note, Its been 18 years or so since I held one. I think the A or Maybe B size might fit inside the diabolo shape slug quite nicely. Estes A10-3T 2.9 lbs of thrust for 0.8 seconds, and I believe they are 13mm in diameter.
Matt John true
I've actually done that twice with Estes C6 motors years ago. I put in a little BP to get it going. one flew perfectly. The other exploded,
Model rocket motor letter designations don't directly refer to the physical size of the engine. For example, an Estes C6 rocket engine is the same physical size as most of their A and B Engines (and even some of their 1/2A Engines), but the C11 series is the same size as their D engines. Their larger E-class engines can also either be the same diameter as the D's but longer, or the same overall size as their F class engines.
Other manufacturers may also have different physical sizes even in the same letter class, and engines of Class H and up require various permits or licenses to use. S is the current highest recognized class designation, which is also used in some smaller commercial rockets.
Hahaha, the Space: 1999 Season 1 Opening Theme! Awesome!
I hope more people send in "rocket rounds" it seems like a a whole new interesting type of round we could see more of on the channel. I think the Taofleder-team could come up with some really innovative rocket rounds that preform exactly like you would think they should: stable flight, accurate, keeps accelerating?, increase range, all sorts of things
You should try these with a lead slug having a cavity in the rear configured as a base bleed system from a rifled barrel.
A base bleed is a slow burning rocket propellant that isn’t designed to provide thrust but rather to create a pocket of smoke behind the projectile in order to reduce drag.
Works for artillery.
Cool stuff!
Thumbs up for the thunderbirds montage soundtrack.
That poor bear took one in right in the marble sack!
What's wrong with binge watching the Andy Griffith Show? Huh OG? It's still one of the best!
“My wife’s gonna be so mad...” We felt that.
Damn, your content is always entertaining and exciting!
And it is rocket science
thank you!
TAOFLEDERMAUS There is one profession that needs to be more careful than a rocket scientist.
They are know as a... rocket... surgeon!
Please use that joke sometime.
Space 1999 Hell yeah!!!
If you want you could add a primer on the back and extend the round turning it into a ceaseless round
Thunderbirds soundtrack ftw...
was actually Space 1999. I had to check the comments to see if I was the only one who caught that. Then again, I may be the only fan of the show that remembers the music and watches this channel.
Easy mistake to make, though. Both were composed by Barry Gray.
@@tadlockje I didn't have that one as a kid. I grew up in Belgium. Thunderbirds and A team reruns for me.
It’s definitely the Thunderbirds theme. Did Space 1999 use the same melody with a different arrangement or something?
Just looked up the S1999 theme - very different, with a distinctive funk sound.
EDIT: You’re actually both right. The S1999 heme appears at the start of this video, but the rest of it is the Thunderbirds theme.
This video deserves a like, not just because of the excellent content, but that thunderbirds theme, huge childhood throwback.
i'm just in shock they beat gyrojet rounds with something cheaper and lower power.
I think that might be mostly due to the higher initial speed
Nice. Should’ve tried one into the air just to see the stream. No fire danger there. But very interesting.. I think I spend too much time watching this channel but I just can’t stop. It’s just oddly satisfying to see different ideas and different shit being shot.
Its now just time until we get a real life bolter
Space 1999 theme makes this video surreal.
I hear thunderbird music!!!
Awesome idea for using the hard drive as a spindle!
The space force will thank you later
Surprisingly accurate, but needs to be made out of a stronger material like brass or copper. Interesting thing that, but i'd still go with the glass rounds or the vacuum core shots.
If anything the rocket fuel is adding velocity in the barrel and outside it.
You keep showing up in the comments of the videos I've watched as of late.
I find it quite humorous.
canis Root read siege 2
I'd love to see how my favorite round, Remington's 7/8 oz Sluggers @1850fps flies in high-speed footage. Have u guys ever tested this round? I didn't see any vids in archives on the Slugger rounds. Great vid BTW.
Glad to see some old school Taofledernaus experementation!
"Homemade rocket fuel " sounds like a way to get a visit from the ATF. lol
3:45 You captured one of those flying rod UFOs haha!
Magic Smoke FPV Too bad it was a bird.
Love the Edwin references. He's a classic too. Thanks again guys.
I like to think that better accuracy of Taofleder slugs is due to the barrel of the shotgun being better launching plantform than what Gyrojet could offer
This is kinda fun. I would consider model rocket motors at longer distances with rifled barrels. They also have an explosive charged tip to deploy the parachute and could be fitted with a nosecone.
The Bear shot was outstanding!
One other consideration is that the center of mass of the projectile changes inflight. As the hard-candy propellant burns off the mass distribution changes.
Also, to strengthen the burn chamber, perhaps put in a brass liner (like cut one of the 9mm brass casings).
That rocket gun blows my mind man
Extra points for the Space 1999 theme playing in the background. :-)
Followed by Thunderbirds.
It took me long enough to find this video. I watched the Gyrojet video quite some time ago. Maybe one day it can become an actual practical weapon. My favorite part of the Gyrojet was that it's like caseless ammunition, but just waaay cooler. And I like caseless ammo because it doesn't spit out brass everywhere.
Love the hard drive usages.
wonder if a heavier body like a cast lead body would help stability
jeff og and danny are the experts tho
1:42 Best use of an old Hard drive I've seen! Lol.
Never been into "reloading" shotgun cartridges but I might have to throw my hat into the rocket round designs. I imagine the biggest issue would definitely be the propellant (especially solid types). Reminds me of the precursor to JPL and the issues they had with Solid fuel (e.g air pockets, containments, etc). Not to mention the round has to be consistent as well. Dealing with such a tiny mass relative to it's velocity, where the slightest tug in one direction causes a tumble.
I'd love to see the .STL file as well as the configuration/specs of the actual round like the material (ABS, PLC, etc) but more importantly the inline/wall specs (thickness, pattern, percentage, and design pattern of said lines, center of mass, etc). All those things are equally important as it can determine points of failure or where a spot could use a little ductility/give rather than being stiff and brittle.
This should prove as a fun project. At the very least a good application of theory. Off to the whiteboard and Solidworks... After I look up some Laws surrounding the propellants lol.
Sidenote: I apologise if anything here was mentioned in the video already. As I jumped shortly after the hard drive scene. Just got myself too excited at the potential designs.
can't wait for more of these videos. Nice watch. RPS= Rocket Propelled Shell.
You guy's are definitely Nuts by shooting unknown reloads and at really closed range..
You should cast the propellant as a core burner. That means a hollow channel from front to back. More surface area burning at once so the propellant burns faster and provides it's energy very quickly.
I was under the impression that the Diabalo shape creates a negative pressure zone at its tail; and that the -P zone is key to the stability of the design.
So it seems adding propellant to the tail cavity removes the -P and undoes the stability of the design. I think that partly explains why these had so much trouble.
It's an interesting experiment, and seems to confirm, at least in part, how the Diabalo shape functions.
A star shaped bore would improve the burn. Maybe if he rams in the charge with a small torx bit next time?
For some reason I'm going to watch several episodes of Thunderbirds in Supermarionation. Thanks for playing The Thunderbird March. Fantastic show for a kid in the sixties.
with a WAY faster burn and a nozzle that may work for long distance. i would love to see it.
"Kinda like rocket science" LOL good one!
That’s cool, can’t wait to see Gen2
I like the Thunderbirds theme playing in the background.
I would say you've earned your Rocket Surgeon Law Degrees on this one..... 👍
Maybe more thrust, quicker burning fuel and a metal body might make these really cool