boron carbide blast nozzle
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- DOI/PMID/ISBN: 10.1039/D0NR07971E
- [URL] https://pubs.rsc.org/en/content/articlelanding/2021/NR/D0NR07971E#!divAbstract
I have a youtube channel (AvE) and I think I have a material that your press cannot destroy. I sent some to Taofledermaus, he shot it out of a shot gun.
The pistons will bore the engine block and the car will be destroyed from the inside. This works due to the material's hardness causing an extremely abrasive effect when friction is put between it and an object.
This technique was previously used by the CIA.
Here is the thread in question.
Let's help him by showing HPC our enthusiasm for the idea.
Does anyone have an experience mixing boron carbide and tungsten carbide in powder form? I've seen a paper use sintering, but i want to put them on resin. I'm worried they might produce a less rigid composite than WC alone. Suggestions on the matter?
I have a dremel with some cutting disks attempting to cut through a Master-Lok padlock of some description that apparently has a boron carbide shackle. After going through a bunch of them(mostly have them for plastic anyways) I was curious to know if a cordless angle grinder is up to the task? I don't own one but if I'd have to go spend money on bolt cutters that'll will probably be ruined after this I'd rather pay more up front for later.
Any thoughts or suggestions? Thanks!
Hey everyone, as my career winds down and I get a bit older, I've found lighter plates to be really nice on my body, and I won't be using issued plates in my carriers forever, so I'm looking for some better plates to buy myself. I don't really have budget constraints, but I would rather not spend 1500 smackers on a single plate; at the same time I don't want to cheap out on the gear I will probably use for the rest of my life. I'm currently using RMA and Hesco level 4 plates, a couple different models, all 7-8 pounds in weight. They're good plates, but I'm looking for something that's really light, or as much as possible.
What I'm really looking for is something that can stop M855A1 and 7.62x51 or 54R, definitely multi hit. I don't really need M2AP protection, but level 4 isn't really a bad thing in my opinion. Size would be 10x12, medium SAPI, or Large SAPI. I'm kind of between sizes, and I've always used Large SAPIs, but all the plates I've owned myself have been mediums or 10x12. Carriers I own are size L Spiritus Systems LV119, and size L Crye AVS.
I've looked around a lot, but there's so many options its hard to choose the best. I've been looking at the level 4 shot stop, which is really good on paper, and I've heard good things about, but I don't know what diritium is, it just sounds like UHMWPE. I've also looked hard at the Velocity API-BZ, and I'm leaning toward it, but it is heavier than some other options. Are there any others I should look at, like armor express or Midwest armor?
Being in the industry, I see sooooo many people and even companies claiming (company x) is USA made, when it isn't or that it is "Assembled in the USA" which can literally mean they slap a label on it and call it good. Here are some indicators for Imported plates.
Looks: the words STRIKEFACE on the front of the plate, and "bubbled" looking edges (foam). Searching Level IV body armor on alibaba you can scroll down and see what I'm talking about. These plates are typically tile array with square tiles or hexagon tiles. They will not be edge to edge and the bubbled edge is foam.
Label: For NIJ certified/listed models, there are strict label requirements found on page 40 Exhibit 18. Imported armor labels will often been screen printed in or be a bare bones label. Often times, the dimensions will be in metric and the weights won't be in lbs. They will also be vague with information such as "Location of manufacturer" will say USA. US manufacturers will say city and state. Example of imported label: Image 2.
Weight/Price: A lot of Imported level IV plates will be around 5.5lbs and under $400/plate. These will typically be made with Boron Carbide and Polyethylene (UHMWPE). With American Made plate made out of these same materials, you'll be spending from $699/plate (RMA 1192) to around $1100/plate (hesco 4800 or LTC 26300)
Sizing: Many companies selling imported plates will have weird shapes and sizes compared to normal SAPI, Shooter, and Swimmer cuts.
Company address: Looking up company addresses can tell you a lot. Most import companies will have a UPS store or Postal Annex address, residential address, or a office building Suite number. Actual manufactures will have a location big enough for a manufacturing facility.
Verified American Manufacturers (Ceramic): These are companies I know for a fact that manufacture in the USA. There may be more, but they may have 1 or more of the above that make me question the validity.
- RMA Armament Inc
- Hesco
- LTC
- Tencate
- Highcom
- Hardwire
- AR500 (now makes an in house ceramic plates)
- Spartan Armor Systems (now makes in house ceramic plates)
- Iten Defense/Iten In
Without getting into a discussion of the company's ethics, Hoplite Armor is now selling the LTC 28590 in Swimmer's cut. It looks like these may be the highest tier plates on the commercial market today, with a correspondingly high price tag ($4000 for a pair).
For those who are wondering what this is, it offers Level IV protection at a lesser thickness and very slightly lower weight than the Hesco 4800s while also carrying LTC's reputation. Up until now, I believe it was largely unavailable to civilians, only being sold to SOCOM and/or perhaps certain other government entities i.e. this is a spookplate.
Does anyone know of a performance-related reason not to buy these? I assume with the 0.9" thickness that they'd still have foam padding on both sides for additional protection against drops, and that being LTC, the level of QC would be good enough to confidently protect against listed threats (rumor even has it they're M993 tested? or something?). The website says that they're still just boron carbide & dyneema, but it looks like a CTRL+C description from the LTC26300, so I don't know if the materials are actually more advanced. If indeed they are adequately overbuilt, they'd have to achieve the lower weight somehow, and I would assume better materials or more advanced assembly would be the method.
Roger roger
(M - partially elaborating on things already developed as a part of broader AI integration and synthetic bodies from the Everlasting, and adding some more)
As the integration of the AI Personae in the Commonwealth, both civilian and military, are going extremely well, there is a need for specification and development of further military-based infrastructure and development of the systems related
Robot models
"Clanker"
The most basic humanoid robot, this model is primarily serving as a maintenance tool and worker unit. Due to minimum comfort and maximum pragmatism in the design, including foldability, this model is rarely inhabited by a Personae, especially due to the lack of life support for organic parts.
Clanker is designed to be cheap, mass produced, and in low-intensity environment.
However, this doesn't mean that Clanker isn't advanced:
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The frame is made out of lightweight nano-reinforced polymers - primarily CNT/graphene/BNNT composite, providing it with great strength, low weight and relative ease of manufacturing.
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- A research is done to make the frame foldable, with utilization of nanomaterials as a composite metamaterial - with memory shaping capacity allowing joints to fold unexpectedly. This is done to maximize storage capacity and transportability of the Clanker - ideally, one robot should be able to fit in a small box, making logistics trivial
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Following major civilian development in bionic and synthetic technology, the main motor function is done by bionic CNT muscles - providing human-tier strength with minimum expenses and power draw, with light weight making opeartions trivial. Dexterity of a Clanker, despite it's foldability, is on par with a human.
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Due to maintenance focus, the Clanker has motoric function superior to a human, with it's "hand" able to extend, rotate, host multiple utility tools inside the prehensile fingers, and have swappable hands for further utility.
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Clankers have an imaging suite mainly adapted from VIVEC - primarily due to economy of scale and sheer utility it provides:
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- High definition optical imaging suite in several locations providing 360^o 16K of the surroundings.
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>The grappleshot is a new piece of equipment available to Spartan supersoldiers wearing the GEN3 platform. But what was exactly the precursors to this breakthrough technology, and what is the law surrounding the development of the grappleshot itself?
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>Hey, everyone, welcome back to installation 00, and today, we're going to look at the grappleshot a little bit more in depth.
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>Now at first glance, the grappleshot seems like a shiny new addition to the Halo Infinite sandbox and that it's just cropped up out of nowhere. The reality being, however, that the grappleshot itself did actually have something of a technological precursor that was used on the MJOLNIR platform previous to its innovation and development in 2549.
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>In the book The Fall of Reach, first published 20 years ago in 2001, and of which I still hold my original copy, in the prologue of the book, we encounter Spartan Blue Team as they are participating in the Battle of Jericho VII in the Lambda Serpentis system, and although the Covenant originally invaded in 2532, the battle lasted three years meaning that by the time the Spartans were called in, the date was already February 12, 2535.
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>Now bearing in mind by this point, the Human-Covenant War had been raging for ten years and the Spartans had been in active duty for just as long, still wearing their MJOLNIR Mk IV battle armor. A scene is described where the Spartans have to deal with a V formation of Banshees. They lure the V formation in and then jump backwards off of a cliff, and once they jumped clear, they activated the fougasses they had planted just back from the cliff face. The Banshees were completely destroyed, and the Spartans, although in freefall, were then suddenly slammed against the cliff wall by the stilled cable that was connected to their waists. They then rappelled down these cables and onto a beach where they then met up with the other Spartans.
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>Rappel lines are not unusual pieces of equipment to find on military operations. During the Battle of Onyx, members of Blue Team, Kurt, and SPARTAN-IIIs used steel-braided rappel lines to move quickly through choke points of the Forerunner structures underneath the surface of Onyx. Still further during Operation First Strike, it was revealed that the Spartans of Blue Team have tether lines connected to their belts that enable them to tether themselves to objects or to each other, and these tethers are also autom
... keep reading on reddit β‘
So, I got to play D&D for the first time and it's been fun. A little chaotic but fun. And it also made me want to adapt more of its OGL content into my world.
Now, that's just the inciting incident. This is something I've been debating in myself for a while. You see:
- Dragons are really difficult to justify without magic. If only I had just a little stronger materials, maybe I could make it work.
- I kinda envied how other people could integrate magic into their creatures as something natural they're built around.
So, I caved in and introduced magic to my setting... well not magic, but robots.
The robots would complement the organic creatures: They can manipulate stronger materials but aren't as abundant or large as organics.
I mean, there was never really a reason for animal-like robots not to exist. I just felt it'd ruin the aesthetic if I added them. But then I realized these weren't run-of-the mill robots. I could shape-optimize them to look more organic.
I mean, D&D gave dragons the draconis fundamentum, or as I like to call it: "the bullshit plot-excuse organ". But now it'd make sense.
Every complex life form would possess a core that builds these machines and extra-sturdy materials which are responsible for the magical powers and improbable anatomy. I mean, within reason.
Dragons only really need to be made out of sturdier materials. I had graphene and boron carbide in mind for load-bearing parts like wing membranes, bone, tendon and cartilage. We still struggle with artificial muscles and organic ones are also at their limit, but if there was a way to create stronger bonds between the tendon and bone...
But, I'd like to ask you as well. If you came across such a dragon. Would you be okay with that?
