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Videos (368) | Sift Talk (25) | Blogs (16) | Comments (741) |
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Making Spherical Tanks Through Explosive Hydroforming
From YouTube videos description..
Explosive hydroforming, also known as HERF (High Energy Rate Forming) or exploform, is a striking alternative to the more traditional process of metal hydroforming. Unlike this older method, which shapes metal using pressurized hydraulic fluid pumped into a forming chamber, HERF techniques utilize an explosive charge to create the necessary pressure. Although the charge is relatively small, it is capable of generating enough force to mold the associated metal into the die.
The explosive charge is typically positioned at a specific distance from the workpiece, and both are immersed in fluid, usually hydraulic fluid or simple water. Certain facilities may also use oil, gelatin, liquid salts, or regular air as the transmission medium. However, water is the most commonly used medium as it is the least expensive, excellent for creating uniform peak pressure, and readily available. Once the charge and workpiece are properly positioned, the charge is detonated, pressing the workpiece into a die. The part is then removed and the process is repeated if necessary.
Explosive Hydroforming Methods
Explosive hydroforming techniques fall into two basic categories. Although both methods function according to the same general principles, they rely on very different placement of the explosive charge within the forming chamber.
Standoff Method: With the Standoff Method, the explosive charge is used in conjunction with an intervening medium. In most hydroforming applications, the intervening material is typically water, oil, or air. The required deformation level dictates how far the explosive charge is placed from the piece of metal to be formed. When the charge detonates, the ensuing force is transmitted through the fluid and pressures the metal into the die. Detonations used in the Standoff Method can often reach several thousand pounds per square inch (psi).
Contact Method: In the Contact Method, an explosive charge is placed in direct contact with the forming metal. This process generates far more pressure than the more conventional Standoff Method. By placing the explosive charge in close proximity to the surface material, the detonation can result in as much as several million psi.
Icicles Form on Ceiling Fan Amid Freezing Temperatures Texas
California was just fine until deregulation and privatization in 96.
Since then, it’s gone to shit, culminating in almost zero maintenance that caused billions in wildfire damages, more outages, and much higher prices. We even had Enron here, they deliberately shut down plants at peak demand time to artificially raise prices repeatedly.
Are you under some delusion that California doesn’t have private electricity companies? Look up PCG on the nyse. Lol! Privatization CAUSED all the problems we have today. Derp.
🤦♂️
When the Democrats take over Texas they can run its power just like California's because everyone knows California never has power problems, lol!
Let's talk about Trump's accomplishments...
5) and 6) is blatant cherry picking so basically a lie
7) is interesting, while real wages are dropping, this probably means more members of a household are working than 50 years ago, when real wages for basic labor peaked.
Lessons from 2,000+ Interviews with Broken People
this may be peak irony.
If you want to hurt yourself go hate someone. How true.
Tesla China - Shanghai Gigafactory production line
Tesla is a good buy today even at 52 week highs. There is a growth path forward in which new factories are coming on line
Giga
Shanghai
Berlin
Texas
+ Giga Nevada battery factory adding lines.
Limiting factor is battery. Battery day should lay out the path forward.
Tesla is profitable , last 4 quarters, and believe this will continue.
I am looking long term. Min 5 years to 10 years.
I am looking for production to double approx every year.
600k this year goal
1.2mil min goal next year
2.4mil + in 3 rd year.
I've posted the 2020 NC transportation outlook on the Sift. It is really worth a look.
Also any one interested should look at Kathy Wood of ARC investment. Just look for her on you tube.
This is ARC investment link
https://ark-invest.com/analyst-research/tesla-price-target/
Sandy Monroe ( you tube) tore down a 2012 and a 2020 model and was astonished at not only in improvements but absolutely astonished in the technology lead of the produce. His group does this and sell reports to all. Evey Asian and Europe atuo manufacture has bought his report. Not 1 American Auto maker has.
Ford, GM are far behind.
Every ICE maker ( ICE Internal Combustion Engine) will have to not only continue that investment and also invest in EV. Dont think they have enough Research investment dollars on hand to do both.
Musk is a visionary Just look at what he is doing besides cars.
Space X . Few step into the space race and succeed like Musk.
Boring company . Fed up with traffic jams he look for solutions. Looked at boring machines and found then to be 15 times slower than a snail. Got a team together and designed a boring machine 15 times faster.
Supplemental storage energy for peak energy demands.
Solar panels. Redesigned and lower cost of ownership.
Musk salary /bonus ties to achievement goals, not just a set amount.
This a BUY time.
This is like buying Apple when Steve Jobs came back to Apple.
Over valuation is what people see Tesla to be worth.
Market forces, Technological improvements and Government regulations will push EV market to forefront over the next decade. There is no stopping this.
Bob, and I mean this with all seriousness, SELL!! The over-valuation is so fucking crazy on TSLA right now that it makes the Dot-Com look like Berkshire Hathaway.
Bryan Lewis "Maybe I'll Vote Democrat Again"
Trump said he loves the uneducated and low IQ voters, and they obviously love him back. This stupidity is proof.
You have to have done something before to be able do it again, morons.
Btw, don't watch this drivel just because I peaked your interest by commenting, it's really not worth your 4 1/2 minutes
F9 - Official Trailer [HD]
I'm STILL excited to see new additions to this series, despite that it peaked a few movies ago.
Over-the-top unrealistic stupid FUN action? Sign me up!
Why Shell's Marketing is so Disgusting
@newtboy,
If North America is to adopt the Amish lifestyle, how many acres of land can the entire continent support? The typical Amish family farm is something like 80 acres is it not? I believe adopting this nationwide as a 'solution' requires massive population downsizing...
If you want to look at the poorest conditions of people in the world and advocate that the poverty stricken regions with no access to fossil fuel industry are the path forward, I would ask how you anticipate selling that to the people of California as being in their best interests to adopt as their new standard of living...
You mention overpopulation as a problem, then invent the argument that I think we should just ignore that and make it worse. Instead I only pointed out that immediately abandoning fossil fuels overnight would impact that overpopulation problem as well. It's like you do agree on one level, then don't like the implications or something?
The massive productivity of modern agriculture is dependent on fossil fuel usage. Similarly, our global population is also dependent upon that agricultural output. I find it hard to believe those are not clearly both fact. Please do tell me if you disagree. One inescapable conclusion to those facts is that reducing fossil fuel usage needs to at least be done with sufficient caution that we don't break the global food supply chain, because hungry people do very, very bad things.
Then you least catastrophic events that ARE NOT supported by the science and un-ironically claim that it's me who is ignoring the science.
You even have the audacity to ask if I appreciate the impacts of massive global food shortages, after having earlier belittled my concern about exactly that!
The IPCC shows that even in an absolute worst case scenario of accelerating emissions for the next century an estimated maximum sea level rise of 3ft, yet you talk about loss of 'most' farmland to the oceans...
Here's where I stand. If we can move off gas powered cars to electric, and onto a power grid that is either nuclear, hydro or renewable based in the next 50 years, our emissions before 2100 will drop significantly from today's levels. I firmly believe we are already on a very good course to expect that to occur very organically, with superior electric cars, and cheaper nuclear power and battery storage enabling renewables as economical alternatives to fossil fuels.
That future places us onto the IPCC's better scenarios where emissions peak and then actually decrease steadily through the rest of the century.
I'm hardly advocating lets sit back and do nothing, I'm advocating let's build the technology to make the population we have move into a reduced emissions future. We are getting close on major points for it and think that's great.
What I think is very damaging to that idea, is panicky advice demanding that we must all make massive economic sacrifices as fast as possible, because I firmly believe trying to enact reductions that way, fast enough to make a difference over natural progress, guarantees catastrophic wars now. Thankfully, that is also why nobody in sane leadership will give an ounce of consideration to such stupidity either. You need a Stalin or Mao type in charge to drive that kind change.
Screamin' Jay Hawkins on Arsenio Hall with Emo Philips
Fuck yeah the 90s. I feel like that was peak weird shit on tv.
Hypersonic Missile Nonproliferation
The Zero's Chinese performance was ignored by the U.S. command prior to pearl harbor, dismissed as exaggeration. That's actually the crux of my point.
Exceptional moments do not change the rule.
Yes on occasion a wildcat would get swiss cheesed and not go down, but 99% of the time when swiss cheesed they went down.
Yes, there were wildcat aces that did fairly well (and Zero aces that did even better), but 99% of wildcat pilots were just trying to not get mauled.
Hellcat didn't enter combat till mid 1943, and it is the correction to the mistake. The F6F should have been the front line fighter at the start of the war... and could have been made sooner had Japanese tech not been ignored/dismissed as exaggeration.
Russian quantity as quality? At the start they were shot down at a higher ratio than the manufacturing counter ratio (by a lot). It was a white wash in favor of the Germans.
It took improvements in Russian tech to turn the tide in the air. Lend-lease only constituted about 10% of their air force at the peak. Russia had to improve their own forces, so they did. By the end, planes like the yak3 were par with the best.
The Mig31 is a slower Mig25 with a digital radar. Their version of the F14, not really ahead of the times, par maybe.
F15 is faster than either mig29 or Su27 (roughly Mig31 speed).
F16/F18, at altitude, are moderately slower, but a wash at sea level.
Why would they shoot and run?
We have awacs, we would know they are coming, so the only chance to shoot would be at max range. Max range shots are throw-away shots, they basically won't hit unless the target is unaware, which it won't be unaware because of the RWR. Just a slight turn and the missile can't follow after tens of miles of coasting and losing energy.
Chinese railgun is in sea trials, right now. Not some lab test. It wouldn't be on a ship without first having the gun proven, the mount proven, the fire control proven, stationary testing completed, etc.
2025 is the estimate for fleet wide usage.
Try finding a picture of a U.S. railgun aboard a U.S. ship.
Why would a laser rifle not work, when you can buy crap like this : https://www.youtube.com/watch?v=7baI2Nyi5rI
There's ones made in China, too : https://www.sanwulasers.com/customurl.aspx?type=Product&key=7wblue&shop=
That will light paper on fire ~instantly, and it's just a pitiful hand held laser pointer.
An actual weapon would be orders of magnitude stronger than a handheld toy.
It's an excellent covert operations weapon, silently blinding and starting fires form kilometers away.
Russia does not need to sink a U.S. carrier for no reason.
And the U.S. has no interest in giving Russia proper a need to defend from a U.S. carrier. For the very reasons you mentioned.
What Russia can do is proliferate such a missile, and effectively deprecate the U.S. carrier group as a military unit.
We need carriers to get our air force to wherever we need it to be.
If everyone had these missiles, we would have no way to deliver our air force by naval means.
Russia has land access to Europe, Asia, Africa. They can send planes to anywhere they need to go, from land bases. Russia doesn't /need/ a navy.
Most of the planet does not have a navy worth sinking. It's just us. This is the kind of weapon that disproportionately affects us.
-scheherazade
A big part of the Zero's reputation came from racking up kills in China against a lot of second-rate planes with poorly-trained pilots. After all, there was a reason that the Republic of China hired the American Volunteer Group to help out during the Second Sino-Japanese War – Chinese pilots had a hard time cutting it.
The Wildcat was deficient in many ways versus the Zero, but it still had superior firepower via ammo loadout. The Zero carried very few 20mm rounds, most of it's ammo was 7.7mm. There are records of Japanese pilots unloading all their 7.7mm ammo on a Wildcat and it was still flyable. On the flip side, the Wildcat had an ample supply of .50 cal.
Stanley "Swede" Vejtasa was able to score seven kills against Japanese planes in one day with a Wildcat.
Yes, the discovery of the Akutan Zero helped the United States beat this plane. But MilitaryFactory.com notes that the Hellcat's first flight was on June 26, 1942 – three weeks after the raid on Dutch Harbor that lead to the fateful crash-landing of the Mitsubishi A6M flown by Tadayoshi Koga.
Marine Captain Kenneth Walsh described how he knew to roll to the right at high speed to lose a Zero on his tail. Walsh would end World War II with 17 kills. The Zero also had trouble in dives, thanks to a bad carburetor.
We were behind in technology for many reasons, but once the Hellcat started replacing the Wildcat, the Japanese Air Superiority was over. Even if they had maintained a lead in technology, as Russia showed in WW2, quantity has a quality all of it's own. We were always going to be able to field more pilots and planes than Japan would be able to.
As far as Soviet rockets, once we were stunned by the launch of Sputnik, we kicked into high gear. You can say what you will of reliability, consistency, and dependability, but exactly how many manned Soviet missions landed on the moon and returned? Other than Buran, which was almost a copy of our Space Shuttle, how many shuttles did the USSR field?
The Soviets did build some things that were very sophisticated and were, for a while, better than what we could field. The Mig-31 is a great example. We briefly lagged behind but have a much superior air capability now. The only advantages the Mig and Sukhoi have is speed, they can fire all their missiles and flee. If they are engaged however, they will lose if pilots are equally skilled.
As @newtboy has said, I am sure that Russia and China are working on military advancements, but the technology simply doesn't exist to make a Hypersonic missile possible at this point.
China is fielding a man portable rifle that can inflict pain, not kill, and there is no hard evidence that it works.
There is no proof that the Chinese have figured out the technology for an operational rail gun on land, let alone the sea. We also have created successful railguns, the problem is POWERING them repeatedly, especially onboard a ship. If they figured out a power source that will pull it off, then it is possible, but there is no concrete proof other than a photo of a weapon attached to a ship. Our experts are guessing they might have it functional by 2025, might...
China has shown that long range QEEC is possible. It has been around but they created the first one capable of doing it from space. The problem is, they had to jury rig it. Photons, or light, can only go through about 100 kilometers of optic fiber before getting too dim to reliably carry data. As a result, the signal needs to be relayed by a node, which decrypts and re-encrypts the data before passing it on. This process makes the nodes susceptible to hacking. There are 32 of these nodes for the Beijing-Shanghai quantum link alone.
The main issue with warfare today is that it really doesn't matter unless the battle is between one of the big 3. Which means that ANY action could provoke Nuclear conflict. Is Russia going to hypersonic missile one of our carriers without Nukes become an option on the table as a retaliation? Is China going to railgun a ship and risk nuclear war?
Hell no, no more than we would expect to blow up some major Russian or Chinese piece of military hardware without severe escalation! Which means we can create all the technological terrors we like, because we WON'T use them unless they somehow provide us a defense against nuclear annihilation.
So just like China and Russia steal stuff from us to build military hardware to counter ours, if they create something that is significantly better, we will began trying to duplicate it. The only thing which would screw this system to hell is if one of us actually did begin developing a successful counter measure to nukes. If that happens, both of the other nations are quite likely to threaten IMMEDIATE thermonuclear war to prevent that country from developing enough of the counter measures to break the tie.
lurgee
(Member Profile)
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Chasing Cheese Down A Hill Is Dangerous
Cheese addiction at it's peak level.
If you or your loved ones are struggling with cheese addiction, then help is available to you here:
https://www.pcrm.org/TheCheeseTrap
Swiss ball surfing
This is it. Humanity has peaked.
It's all downhill from here.
Fallon interviews outgoing Trump cabinet member
He's still a great performer, needs better scripts than what he was working with at the end of his peak though.
Unreal Engine's Human CGI is So Real it's Unreal
To be overly anal about it, uncanny valley concerns more the eeriness or revulsion 'peak' of a near lifelike replica. Think dead eyes in Polar Express or the plastic faces of Japan's android models.
This to me at least is beyond that trough on the uncanny valley chart, I do not sense any revulsion personally. I can of course detect it is still not real but no particular facet triggers that doppelganger reaction.