so I've been wondering for a while what this perpendicular steel plate is for. ricochet catcher? for crews to easily climb up the tank??? any info would be great.

https://preview.redd.it/35otnz8sw4k71.png?width=605&format=png&auto=webp&s=6b9948a1ca2f8024caf64a8cd6fc8019f1b35d9b

WHY does there only exist information about air blowing parallel to the surface of a plate?! I seriously can't find anything for air blowing directly at a plate. To get a specific idea so there is no confusion, think of a cars windshield with air blowing at it from the front.

Hi everybody!

My skills with mig are pretty good, but I've got a sudden project where I need to weld tube perpendicular to plate with TIG welding. drawing here.

At the moment I only have a TIG welder so I'll have to do the project with TIG. We're talking 1.5 mil plate and 1.5 mil thick tubing here. My skills with tig are not that good yet, how do you guys reccommend me to fill in the gap between the plate and tubing? Lots and lots of filler material? ... With mig it would be easy, just blast it and fill 'er up.

Hey r/FluidMechanics, I’m working on trying to figure out the best way to estimate the wind velocity 10 feet downstream of a small wall.

Please let me know if you have any recommendations for a rough estimate or if you think the difference is negligible.

I have seen some drag force equations that recommend a drag coefficient of 2.0 for a flat plate perpendicular to flow but not much for velocities.

Please see diagram linked here

Initial Wind Velocity = 115 mph

Wall height = 2.5 Feet

Wall Width = 0.5 Feet

Thank you in advance!

We've seen in RoW that >!plate is made of many smaller, non-radiant spren!< . So, even though the Stormfather said that Dalinar wouldn't have any shards, why wouldn't he be able to have >!plate made of gloryspren!< ?

Sharing this so people can learn from my mistakes but also feel welcome to tell me what I could have done better so I don't make this kind of mistake in the future.

Yesterday I was mounting a new TV above my living room fireplace which required drilling four pilot holes in the studs for the main lag bolts. I measured, leveled, and marked everything out. Grabbed my drill and a brand new drill bit and started with the first pilot hole. Of the four holes in a rectangle I started with the lower right, 4 inches above the mantle. I start drilling the hole I got about 2 inches in and hit something solid. Okay, cool. I hit the masonry for the fireplace and the first hole is done.

Moving to the second hole at the same height, the lower left, I line my drill up and start going. I'm expecting to hit the masonry again and I get about 2 inches in when the drill bit bites something and pulls into the wall...

POP. HISSSSSSSSS.

It took about 2 seconds for me to register what was happening.

"What did I hit that popped?"

"What would make a hissing noise?"

"Gas."

"Oh shit, I hit a gas line."

After the realization hit me I had an initial moment of panic. I put my finger over the pilot hole I had just drilled like I'm living in a Hans Brinker novel and I'm trying to stop a dike from leaking. It stopped the hissing but I quickly realized that was futile, gas was most likely still leaking into the wall even if I plugged the hole in the dry wall.

I quickly got to work. With some help from a friend and my partner who were around we opened all the doors and windows, immediately went to the gas main with a wrench and shut the gas for the house off. With the gas off the hissing stopped and further major disaster mostly averted. The whole event lasted less than 5 minutes but it was scary.

We opened up the drywall and found what had happened. The 1 inch black metal gas pipe came into the house from above the fireplace on the right hand side. The pipe came down the right hand side of the fireplace and at 4 inches above the mantle made a 90° turn and went straight across the top of the fireplace, through the studs, before making another 90° turn and going down the left hand side of the fireplace to make the connection. There were no nail plates or other protection between the drywall and the pipe. My pilot holes at 4 inches above the mantle had hit the pipe dead center and punctured it. The first pilot hole I drilled didn't actually hit masonry, it dented the gas pipe and I go

I have been into Quantum Mechanics recently, and I was shown the term "Quantum Hall", so I searched it up. According to the app I was using (KittyQ), the Quantum Hall Effect was derived from a older experiment conducted by Edwin Hall. There was a metal plate, and a voltage was passed through it (I am using Conventional Current. If you don't like it, think about it as the holes where there aren't any electrons.), and there are magnets around the metal plate. They say that the Voltage is measured "perpendicular" to the current flow (Still in Conventional). But how can a Voltage be "perpendicular" to something? Isn't Voltage a scalar? I even tried Wikipedia, but they said the same thing.

Here is the Quote from KittyQ:

>The quantum Hall effect is based on an older physical experiment, where an electrical current is sent through a metal plate while a strong magnet is held against the metal. An electrical voltage can then be measured perpendicular to the current and the direction of the magnetic field. This is called the Hall Voltage.

Here is the text from Wikipedia:

> The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current. It was discovered by Edwin Hall in 1879.[1][2]

Here is the link to the Quantum Hall article from Wikipedia

TLDR: How can voltage be "perpendicular" to the current?

TL/DR Understanding why and exactly how AST Bluebird type satellites can connect to hundreds of millions of ordinary cellular phones at broadband speeds in over a million cellular sites worldwide requires understanding of a technique called beamforming. This writeup tries to illustrate and explain some of how and why that is done.

An example

Let us imagine a deployed and operational Bluebird satellite orbiting over USA at 700 kilometers altitude from west to east that lights up a beam cell in and around the valley of Lordsburg Draw in New Mexico near the border of Arizona. I know very little about that particular valley, but Wikipedia tells me nearby Lordsburg had a declining population in the latest census when it fell below 3000 inhabitants, so it should qualify as an example of rural USA. I also know this part of the USA is semi-arid and hot to the extent that cellular coverage and positioning saves lives regularly.

The city of Lordsburg is an testament to the importance of infrastructure as it was founded in1880 on the route of the Southern Pacific Railroad, because of that railroad. And figuratively Lordsburg is the final destination in the movie Stagecoach. Compared to railroads the stagelines were an older preceeding technology.

Let us look at that scene from a distance.

Low earth orbit is fast

Our Bluebird travels with an airspeed of 7,5 km/ second. Passing Texas west tip to its east tip (773 miles) 1244 km in 2.8 minutes it will be back on the same side of the planet again in 1.6 hours.While doing this it plots a projected ground trajectory seen as a faint green line and an actual trajectory in Low earth orbit seen as a yellow line, in figure 2.

This means for our Bluebird that from the time it is directly overhead (blue beam in fig2) to when it passes away from the satellites footprint and the satellite is no longer able to connect (black beam) it is just 3 minutes of time, and then another satellite takes over the job of keeping that particular beamcell connected.

The figures here is Field of view dependent and just my assumptions to a large extent. But AST Spacemobile application states the system is capable to provide service to 58 degrees of boresight (see figure 1). "Nadir" we also call this angle looking straight down on earth. So that is a 116 degree field of view. If you want to visualize that, close one eye as the visual field of one eye spans about the same angle. Another way is to look at the image below. The blac

In my commute this morning I went down hard. The cause was metal plates in the road (covering an open pipe trench). I have gone over metal plates many times in the past without a problem. These plates were different in that they were not perpendicular to the road but at an angle (about 45 degrees). The bike slid out from under me immediately. No warning the plates were there and a very very dark road,

Hit my head really hard but I had a helmet on so no head wound, had to sit and gather my thoughts though. The clipless shoes came unclipped instantly. My shoulder is probably gonna need work it’s sore and crunching. The bike is fine.

The battle begins. Hope you enjoy!

The final chapter of the third book will be up Saturday Morning.

A Terran Space Story: Academy Days

First | Previous | Next

Chapter 115: Not One Inch

6:35 Bridge

The first volley of plasma lances and railgun slugs struck their targets at roughly the same time. The carrier had directed most of its EM shielding to face the Confederate capital ships. There were areas that had minimal or even no shielding of any kind. The plasma lances were able to overwhelm the emitter arrays where there was minimal coverage. Areas that weren’t protected were had deep gouges rent into her armor and some weapon systems were destroyed.

Commands to redirect the EM shielding were made from the bridge. Unfortunately for her, that was too late. The shielding array had been severely damaged or outright destroyed in most parts of the vessel. The missiles were unaffected by the EM shielding and slipped right through. The kinetic shielding system had largely been rendered impotent. Sixty-four missiles ravaged the top side of the carrier.

The primary bridge along with the primary flight controller centers was struck and destroyed. Those serious, that wasn’t the death knell for the vessel. She was still void-worthy despite the number of rooms exposed to the void and shambled mess her upper hull appeared to be in. A number of missiles entered the hangar were the dagger in the heart for her.

The crew had been rearming some bombers when they were first struck. In the confusion of the massive number of explosions and weapons striking the vessel the door to the missiles and bombs was left open. One lucky missile exploded too close to the magazine store. The missile triggered a cascade of explosions that rippled through magazine stores setting off all of those munitions.

“SHIP KILL. SHIP KILL,” Veronica screamed over the intercoms.

“BREAK FORMATION, FIRE AT WILL,” John yelled.

Each trio of corvettes broke formation. They ripped through the void toward friendly vessels. PDCs were unlocked and began firing at enemy fighters. The small, yet incredibly nimble and hellishly fast, vessels were no match for the amount of fire sent their way. Enemy

I should probably mention that there was a Prologue to this story. If you don't read it you might not connect some of the dots that are hinted at later in the story. Anyways, Here's the next installment of this story, which I don't have a title for yet, I'm still toying with some names, Anyways, Please Enjoy.

+ Prologue + Previous + Next +

_________________

Chapter 2

The Discovery

It was a relatively quick affair to clear the rest of the ship, while there wasn't much of interest, she did find an unsearched locker containing a beam rifle, several charge packs, and a set of medium strength Slaaveth combat armor. While it wasn't the expensive powered model typically found in Slaaveth combat vessels, the security armour was still worth taking. After all, who knew when it might come in handy to have.

Seth had calmed down during her time exploring the ruined ship and had, with her urging and the captain's approval, taken the shuttle and used its maglocks to fully open the wrecked ship's cargo bay main door. With the door fully open it was a simple, if slightly difficult affair, to shift the mass of debris from the dead ship to The Arctic Heart. Once the debris were shifted on board and Neirvith was back in the Arctic Heart’s airlock, she took off her spacesuit.

She met Seth walking back from the hangar as she stepped out of the airlock and into the ship proper. His eyes still smoldered with heat as he met her gaze, but he remained silent. They walked together towards the cargo bay in silence, neither of them speaking a word. As they entered the much smaller cargo bay of their ship she couldn't help but be once again drawn to the mass of twisted wreckage and the occupant it held.

“So you weren't kidding huh?” Seth suddenly spoke in a thoughtful manner.

As she looked over to him he switched his eyes from the mystery in front of them and to her face. She thought about asking if he was okay then decided not to, Human males were awfully touchy about feeling related discussion and she didn't want to aggravate him further than he already was. So instead she just nodded grimly and drifted closer to the mass of metal.

If the inertial indica

Hello!

A few months ago I've made this post to explore some of the supposed drawbacks of gold ammunition, focusing on normalization and penetration loss over distance of gold shells for elite tier 8 and 10 vehicles.

Since then I was thinking of expanding it to cover all tanks, and possibly even all guns, but doing that manually would be a massive pain. Fortunately, /u/Jak_Atackka provided me with the raw data from tanks.gg's database, so I could write a program to do preliminary data processing. Thanks!

So, for the most part this post will be a copy of the other one, with the only major differences being the data set and potentially the conclusions drawn from it.

The source code of the data processing program can be found here.

#1. Mechanics

First, a primer on the relevant game mechanics.

Penetration loss over distance - AP and APCR shells lose some penetration as they fly. They start losing penetration at 100m, and reach a minimum value at 500m. The exact amount of penetration lost differs from shell to shell.

Angled armour is harder to penetrate than flat armour. The harsher the angle of impact, the stronger this effect is. Typically angle of impact is given as angle from a line perpendicular to the armour plate, so for a vertical plate it's the angle between a horizontal line and the path of the shell. Angling is why the IS-7s pike nose can bounce shots despite being only 150mm thick.

Normalization is a mechanic that reduces the effective angle of impact by a few degrees, depending on the type of shell used. For AP that is 5 degrees, so a hit at 60 degrees is treated as if it was at 55 degrees, which limits the effectiveness of angled armour somewhat.

Ricochet happens when a shell hits armour at an angle above a certain threshold, and it means that the shell automatically bounces off, no matter its penetration value. For AP this threshold angle is 70 degrees, and this angle is checked before normalization. Ricochet is why the high tier Swedish TDs can bounce shots despite having extremely thin armour.

Overmatch is actually 2 mechanics: 2x overmatch and 3x overmatch, and both apply only to AP and APCR. 2x overmatch happens when the caliber of an incoming shell is more than 2 times larger than the nominal thickness of a hit plate, and it causes th

Storyteller's Notes

New year, new story in a new ‘verse. I know it’s been a while since I posted any new OC here. Thankfully, while this borrows some thoughts and notes from the husk of my previous work’s attempted continuation, there is no shared continuity between them. This story should stand on its own. I hope to continue writing in this ‘verse as inspiration takes me and I can find the words, and I pray that my offering brings at least one of you dear readers a smile or two.

End of Notes

[Next]

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The Light of Twin Dawns was a beautiful ship, at least in its own captain’s eyes. The vessel was some (500 meters) in length, slender and graceful. Artfully reinforced pylons stretched from its central spindle, supporting a quartet of four-deck blocks that offered the crew the comfort of apparent gravity with a minimum expenditure of precious energy, at least while the ship wasn’t in combat. Of course, combat was the Dawns’ primary purpose. It was a light cruiser of the Wargai Union. Each of those four blocks mounted a turret, sporting a high-output plasma cannon that could vaporize an asteroid the size of a small dwelling from (5 megameters), and hit the crater left by the previous shot dead center if the target had been too large or heat-tolerant for a single blast to remove it from the captain’s list of undesirable objects in the universe. Another four turrets graced the central hull’s forward structure, twin-barreled cousins to the ones on the rotating blocks. The tanks of heavy gas used to fuel these weapons carried enough to fire them once every (20 seconds) – as fast as the main reactor could charge their capacitors – for (a Megasecond). Its defensive electromagnetic field could turn aside stellar storms, or dissipate incoming fire from weapons like its own from a third of their otherwise-effective range.

Yes, the Light of Twin Dawns was a thing of beauty – a pinwheel spinning just ahead of the fletchings of an armor-piercing arrow. Faless Triss took pride in having earned her captaincy so young, only (725 Ms) after his hatching day. The proud wargain quickly suppressed the part of himself that knew he was only a captain because his people were desperate after a war that had started before his clutch had been laid. That he commanded a light cruiser less than (50 Ms) out of the academy boded ill. This war was exhausting the Union. It was exhausting him.

I really hope that title was suitably ambiguous, but in the Rhythm of War sanderlanche, we see Kaladin with his 4th ideal shardplate, zooping around as a flurry of windspren and forming to fit all the people he saves at that moment.

Do we know what shardplate powers other orders of Radiant get? do we know enough to make guesses? The Windrunner ideals are all about helping other people, so it makes sense for their plate to do what it does, but is that something all living plate can do?

I'm focusing on Elsecallers since that's the only other set of living plate we know about. Considering their Elsecalling surge, maybe Logicplate could be used to make a perpendicularity, to take anyone in or out of the cognitive realm. Logicspren take the forms of tiny stormclouds, and Elsecaller ideals involve self-betterment, maybe wearing it makes you smarter too. We haven't seen it worn outside of combat, and learning wasn't on Jasnah's mind at the time. I'm leaning more towards the first, though.

I'm almost certain that Lightweaver Plate is gonna work a lot like glamour armour, though. Plate that looks like it isn't plate, that kinda stuff.

Here’s a list of things that were hard to find answers for and took a lot of googling, some of these may have a question mark ? and hopefully the community can provide answers. Add on some more tips if I miss anything.

As customary:

"If you start hearing this music, you're already dead."

General:

-move your mouse to the right of the screen at the fuel fill-up shop to see ammunitions and ordinance, every city has some.

-special ammunition and missiles are expensive, replacing destroyed ship parts is expensiver.

-special ammo is shared through your whole fleet inventory, regardless of which craft or group buys it. Salvaged or bought ship parts/missiles are not (?), and detachments must link up with the flagship or other groups to share parts.

-you can choose a (slightly) longer aiming line in the options.

-when the dialogue says north, it's not a bearing, just a general direction. If its says far north, it could be up to 4000km away, or around 4 city jumps. If it doesn't say far, it should usually be within 2000km.

-text that has two pairs of numbers separated by degree signs are coordinates, which change based on mouse location and can be found in the bottom right of the screen

-Write notes on your map in the free or unused space you have, it may clutter your screen but the game has a bad habit of not recording some info, or making it a runaround to find.

-tracking down a radio signal will unpause the game.

-Losing a campaign will contribute starting money to your next campaign based on how many kills and cities you get. Doing worse on the next campaign will reduce that(?)

>u/sk_2013 - Doing worse does not appear to reduce it.

-Cipher keys change every time you go north to a new chunk of cities.

-Low morale <5/6 will cause your crew to ask themselves: "Are we the baddies?" which can subsequently lead to having to execute that ship the next time you fight.

-read the manual

Cities/Shops/Repairyards:

-Intel cities regenerate intel over time.

>u/CloakAndDaggr - Intel regenerates one point per 24 hours

-Docking at a city for longer than 12ish hours will turn it dangerous. 24 and it turns hostile. these values never revert. (Is it cumulative among different ships?)

>u/CloakAndDaggr - Yes, danger levels persist between different ship groups and a city will get ticked off if any of the imperials are in the city for too long

-If an alarm goes off and your clock turns red, that m

Do your worst!

I was running errands today and just finished my last stop. When I got to the parking lot I pulled left into a spot directly facing the store. The parking lot was incredibly busy, and I had noticed a car coming the opposite direction before turning but he was a good distance away. As I turned I noticed he was flying through the parking lot and not slowing down at all. I actually glanced right while turning and said to myself “damn is this guy gonna T-bone my car”.

Once I pulled in this guy stopped directly behind my car. I could see him in my rearview mirror gesturing for me to get out and come to his car but I stayed put. I’m a young woman, I was scared, and I thought he would relent eventually and leave. He then turned off his car and started walking towards my window. I tried to call my boyfriend but he was at work and couldn’t answer so I just braced myself.

He started yelling through the window that I put his life at risk for a parking spot, called me a bitch multiple times. I turned off my car and calmly got out, having to walk around him because he was standing directly next to my door. I started walking towards the store but he kept talking shit so I turned and said “do you have nothing better to do with your day?”

To this he replied:

“No I really don’t I’ll fucking rape you bitch.”

And then got in his car and sped off.

I was shaking from shock by the time I entered the store. Turns out the store manager (who knows me well) had seen everything because my car was facing the front of the store. She tried to get his plates but he was gone. I didn’t even think about getting them but he was perpendicular to my car so I don’t think I could’ve seen them anyways.

I just want to say that I understand road rage can bring out the worst of us at times. I also understand that from his POV, I cut him off to park. But if you feel someone has cut you off on the road, give them the finger and move on. Don’t fucking threaten someone with bodily harm. He might have been full of shit, but this angry man knows what I drive and had a clear view of my license plate. I’m going to be thinking about this incident and looking over my shoulder for a while.

I'm surprised it hasn't decade.

For context I'm a Refuse Driver (Garbage man) & today I was on food waste. After I'd tipped I was checking the wagon for any defects when I spotted a lone pea balanced on the lifts.

I said "hey look, an escaPEA"

No one near me but it didn't half make me laugh for a good hour or so!

Edit: I can't believe how much this has blown up. Thank you everyone I've had a blast reading through the replies 😂

It really does, I swear!

They’re on standbi