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    • Nerd Analysis: The AK-200

      in Forums > Nerd Analysis: The AK-200 | Follow this topic



      //Begin boot sequence

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      The concept of a robot soldier is nothing new. However, the world of Remnant provides an interesting environment for the Atlesian Knight-200. Having to compete with both human soldiers and Huntresses, how does the AK-200 stand up to the task of defending humanity from the Grimm? With tensions running high, will they make much of an impact should conflict break out? As per my tradition of overthinking the simplest of aspects in this show, let's have a look at the design of this battle bot. 

      For starters, the humanoid form is absolutely terrible for combat. Anything and everything worth putting a hole in is presented front and center to any potential attackers. Armoring is pretty difficult too. Since a large surface area is presented as a target, more armor is needed to cover everything. Humans put up with it because we can't change our shape (yet), but robots can easily be redesigned to present a smaller cross section to the enemy. Since less armor is needed elsewhere, more armor can be put up front.


      Example: this tank is low to the ground, presenting a smaller target to the front, allowing the armor to be focused there to provide maximum protection

      One could argue this argument is void, since the Grimm don't use guns like people do, but a humanoid design still sucks. Two legs are far less stable than four. You can easily demonstrate this for yourself! Find a crawling baby and a small walking toddler, and see which is easier to push over!


      On second thought, maybe you should ask a friend to help you test this out instead.

      Regardless of your preferred method of stability testing, the AK-200 can easily be knocked over by a charging Grimm, and the ground is the last place you want your fancy battle bot.

      Well, okay, that's not exactly true. You don't want your robot on the ground if it is meant to stand up. If you were to build your robot to be low to the ground, it would be very difficult to knock over, and would already be presenting a smaller target to the enemy.


      Pictured: a superior battle bot design

      The next issue is its hands. the good ol' AK-130s had built in guns, but the AK-200 holds an external rifle. The thing about hands is that they are made of joints, and the thing about joints is that they are a potential weakness and are a chance for failure. So on a single hand, there are no fewer than 10 points of failure at the least! Additionally, while one may argue that allowing the AK-200 to use the standard issue rifle would simplify logistics and reduce the number of parts that need to be built, the fact remains that you still need to manufacture incredibly complex robotic hands, as well as all the spare parts for repairs. 

      So let's assume for a moment that due to the advanced technology seen in Remnant (airships, transforming weapons, etc.), manufacturing these complex machines is no more difficult than mass producing a toaster. An external weapon is still prone to being lost in battle, leaving the AK-200 with nothing but its blade. Remember how I mentioned how easily a two legged battle bot could be toppled? Not only is the AK-200 vulnerable while on the ground, but it could potentially be disarmed as well!

      Another more minor note is weapons handling. Longer barrels are prone to bumping into obstacles, which is why in real life SMGs and carbines are preferred for close quarters, since their shorter barrels allow the operator to aim without hindrance. While the longer barrel length may be necessary to get full power out of the cartridges, an integrated gun in the arm would maintain the same barrel length while shortening the overall weapon length, allowing the AK-200 to fire in more crowded environments or while engaged in a wrestling match with a Grimm.  

      However, their form is not without benefits. While they may not thrive in a pure battlefield setting, they do have some benefits more suited for patrol. For starters, they are "admittedly, a little less scary", and are far more relatable to the average citizen than a mini tank or a Roomba of Doomba. 

      Additionally, even in our world, legs are a superior option to wheels on uneven terrain. Boston Dynamics is actually building a series of legged robots to walk in a variety of environments. The AK-200 would easily be able to move up stairs, over rocks, up ledges, and anywhere else the average human could go.  

      The final advantage a humanoid form has is the fact the world is built for humans. Turrets can't open doors or press elevator buttons. Treads can't pull people out of the rubble or open a latch.

      Image result for roomba trapped by door

      "Curses! Foiled again!"

      As they are properly suited to operate in our world, the AK-200 could be a force to be reckoned with! With no desire for self preservation, they could perform daring raids into criminal headquarters, or climb above the battlefield to gain a tactical advantage against the Grim...

      Only we don't see this level of performance in the AK-200. 

      They don't seem particularly fast nor clever, behaving more like a glorified sentry gun. 


      set.boolean.DAKKA (true)

      While they do a fine job marching around and looking pretty, they do a poor job in a head on fight, which seems like the only thing they really do. But perhaps this is by design. Ironwood himself stated that his goal was to demonstrate strength. Perhaps a decrease in combat performance was seen as a fair trade for the support of the people and disheartening the enemy. Still, to me it seems like sending a bunch of chiwawas to guard somebody's home: a fine gesture, but not a very effective one.


      "Hey Vezeto! Wanna put that statement to the test?"

      Considering the poor form both for fighting humans and Grimm, yet appealing appearance of the AK-200s, I can only assume that Atlas was more interested in making a presence than anything else. 

      4 replies

    • Ironwood's Money Problems

      in Forums > Ironwood's Money Problems | Follow this topic


      Inside Salem’s residence, Emerald and Mercury wait outside a closed door.

      Emerald: I hope Cinder is doing ok. What do you think they’re doing in there?

      Mercury: We should be more concerned with what we’re doing out here, specifically, nothing. I’m bored. Do you have anything interesting to do on your Scroll?

      Emerald: All I have is a couple episodes of Pumpkin Pete and Friends, and since we destroyed the CCT, we won’t be getting any new content for a while.

      Mercury collapses in a nearby chair out of boredom. His gaze falls upon Cinder’s Scroll, which has been left on a table.

      Mercury: Maybe Cinder has something worthwhile on her Scroll.

      Emerald: Mercury! We shouldn’t mess with her stuff!

      Mercury: Hey, as long as we both keep quiet, Cinder won’t have an issue.

      Mercury accesses the Scroll and searches around.

      Mercury: Well, this is interesting. Apparently that virus she planted is still giving her updates, and Ironwood’s been awful chatty lately.

      Emerald: How is that possible? With the CCT down, there should be no communication between Kingdoms.

      Mercury: I wouldn't be surprised if Atlas had some separate, top secret military communication network in case of emergencies. Luckily for me, I can now have some fun looking at Ironwood’s personal messages. Let’s see what he’s been up to.

      Mercury selects a message and a recording plays.

      Ironwood: Perry? Are you there? This is an emergency!

      Perry: Yeah, I'm here buddy, what’s up?

      Ironwood: Thank goodness I could get a hold of you! Listen, I'm in real trouble. AuraTek has been badgering me to return some high end medical equipment I borrowed, but it's been destroyed!

      Perry: So? I understand high tech medical equipment ain’t cheap, but you should totally be able to just buy the equipment off them, assuming you haven’t made any poor economic choices lately and-

      Ironwood: I placed a large bet on Penny winning the Vytal Tournament.

      Perry: Ooh, yikes. By the way, I'm sorry about what happened. Nobody could have foreseen what happened.

      Ironwood: Actually, the guy in front of me in the betting line bet that Penny would lose by getting cut by wires. It's almost like he knew what was going to happen…

      Emerald pauses the recording and gives Mercury a look.

      Emerald: MERCURY! Were you using your knowledge of the plan to win bets!?

      Mercury: Well, yeah! Not everyone can be a master thief who can steal more money whenever they want. Like my dad used to say, if you have an advantage, use it!


      Mercury: Relax! After placing my bet, I sneaked into a nearby maintenance hallway to keep out of sight. By the time that girl found me, it was too late for her to do anything.

      Emerald: You’re unbelievable…

      Emerald continues the recording.

      Ironwood: ...but I digress. Between my lost wager and my airship insurance going through the roof, I can’t pay AuraTek for their lost equipment. I need money! Lots of it, and quickly!

      Perry: You realize Atlas has a banking system for a reason.

      Ironwood: This equipment is super top secret stuff. If I took out a loan that big and nobody sees what it's being used on, they'll start asking questions.

      Perry: So discrete loans, eh? Have you considered going to Borris the Beowolf for some cash?

      Ironwood: The last time I dealt with that crook literally cost me an arm and a leg!

      Perry: Right, right, I forgot! Let’s see, there is also-

      Ironwood: Forget loans, that’ll just cause more grief in the future. What I need is some help making money.

      Perry: Alrighty, business ideas. As the general of the world’s most powerful military and headmaster of the most prestigious combat school, what resources do you have?

      Ironwood: Well… I have lots of robots.

      Perry: Good, good, now what can we do with them?

      Ironwood: We could… put them… on a sort of display. Charge people to see them. So the world can see the might of our military! A museum of our strength!! WE WILL STRIKE TERROR INTO THE HEARTS OF OUR ENEMIES BY SHOWING OFF OUR LEGIONS OF ROBOT WARRIORS AND-

      Perry: Let me stop you there. Given recent events, showing off all the scary robots for money probably won't do you much good. What else do you have?

      Ironwood: I have lots of dust rounds. I could... put them on display and charge admission. A sort of show of force! MY ENEMIES WILL TREMBLE BEFORE MY VAST ARSENAL OF-

      Perry: For crying out loud, can't you think of anything besides shows of force!? I mean, what about selling them! With the shortage of dust in Vale, and a large population of Grimm, people will pay through the nose for dust rounds!

      Ironwood: Wouldn’t I have to compete with the Schnee Dust Company for sales?

      Perry: Just make up some baloney about why he can’t sell dust… maybe say the council is afraid of a war or something.

      Ironwood: Sounds easy enough. I also have a bunch of space robot arms for when mine are damaged. Could I sell those too?

      Perry: Hmm… that’s a bit more difficult. It's a very niche market. You’ll have to fight hard to secure the few customers available. You probably would need a celebrity endorsement or something.

      Ironwood: Celebrity endorsement?

      Perry: Yeah, Pumpkin Pete’s Marshmallow Flakes did this awhile back. They got some fighting champion to advertise their product and their sales increased by 200%. Actually, would it be possible to get that girl to endorse your robotic limbs?

      Ironwood: Sadly, no. However, I do know somebody who could use a robotic arm though. However, she was disqualified from the Vytal Tournament. Would that be an issue?

      Perry: Of course not! There is no such thing as bad publicity!

      Ironwood: Ok, so I just give her the arm and ask her to tell people-

      Perry: No! We ain’t peddling confectionery cereal here! We have to go at this from a different angle. I'm thinking we give her an arm as a gift, a "you fought so hard" and a “we got our best scientists working on this” sort of dealio. She uses the arm, and she and her family start telling people about how wonderful the arm is and how it allowed her to reclaim her life. People get all this positive association with your brand, and BAM! You've created a demand for your supply.

      Ironwood: I don't know what I'd do without you Perry.

      Perry: Probably die alone and lienless in the frozen wasteland outside the Kingdom limits. I am pretty handy. See you around, Ironwood.

      Ironwood: Stay safe Perry.

      1 reply

    • Nerd Analysis: How powerful is Crescent Rose?

      in Forums > Nerd Analysis: How powerful is Crescent Rose? | Follow this topic


      To celebrate the beginning of season 4, I decided it would be fun to answer a question that EVERYONE has asked:

      Just how powerful is Crescent Rose?


      Clearly, this thing has to shoot powerful rounds. I mean, Ruby's whole fighting style depends on using the recoil to fling her around the battlefield. Even our most powerful infantry weapons today come nowhere close to that level of recoil.

      It's pretty incredible that nobody else has tried to figure this out yet.

      Granted, there are plenty of threads that speculate the answers. I've read everything from normal .50 BMG to obscenely large .95 rounds, but there is nothing to back these claims up. 

      Since the last time I tried to test this out in real life resulted in a court ruling that forbade me access to large caliber sniper rifles and 15 year old heroines, I had to turn to an old foe for help: MATH


      "The horror! The horror!"

      Before we start, let's get a few things cleared up. We can use Newton's Third Law to find the power of the bullets fired by observing the recoil inflicted on Ruby. Power is work over time, and work is mass over distance. That means we need to find the weight of Ruby and Crescent Rose, how far they move, and over what amount of time.

      Let's start with weight. The RWBY wikia does not state Ruby's weight, but it does state her age (15) and height (5'2"). The internet has a general consensus that the average girl of these specifications should weigh 105-115 pounds. I'm going to call it 110: a nice number in the middle. Since Ruby is in shape (fighting Grimm) and well nourished (cookies), I see no reason why this estimate would be bad.

      Crescent Rose is going to be more tricky. The wikia does not state a weight (you're really slacking bud). I've heard estimates from 15 pounds on Reddit to 150 pounds from my friends. Personally, I think it's closer to 50 pounds, but we're going to need better than that. Long story short, I did a bunch of tediously long pixel measurements comparing Ruby to her weapon. Compacted, it takes up a volume of about 360 cubic inches.

      Now I need to choose a material for it to be made of. Based off the audio we have of the weapon, I'll assume it's a sort of metal. Let's use titanium

      Yeah, yeah, I know titanium is everywhere, but I'm not being lazy. Titanium alloys are both strong and lightweight, characteristics you want for a weapon you'll be smashing into monsters and carrying with you everywhere. Titanium 6-4 is very common, used in airplanes, casing, and, most importantly, blades. Different alloys have different weights, but the most common ones are about .16 pounds per cubic inch. Times that by our volume and we get a weapon that is 57.6 pounds, which I will round to 60 to keep life simple for me. 60 pounds seems pretty good; light enough to carry around and aim, but heavy enough to have sufficient oomph when slashing Grimm. 

      The more critically minded among you probably noticed a little something about my weight estimate (I can tell who you are based on you patting yourself on the back self-righteously). My calculations assume Crescent Rose is a solid block of metal, which of course can't be true, because where would the bullets go?! Well, to start, titanium is not very good as a barrel for guns, so most likely a heavier steel alloy would be used for that. I figure the extra weight of the barrel paired with the empty space inside would sort of balance out. It is lazy, but in the grand scheme of things, a couple pounds here or there won't hurt us. In the words of my Great Uncle Ferdinand, "What's a couple pounds gonna do?"


      My dad often cites Great Uncle Ferdinand as the reason nobody in our family can get a job in the aerospace industry.

      So a 110 pound huntress plus a 60 pound weapon brings us to a total weight of 170 pounds. Sweet.

      I can actually clear away the space and time with one set of calculations. On Earth, things fall at a rate of 32 feet per second per second. To counteract gravity, you need to accelerate upwards at 32 feet per second per second. So if we can find a scene where Ruby shoots straight down, we can easily find how much force is behind her shots.

      I am assuming that gravity of Remnant is the same as Earth. Of course, if Remnant had lower gravity, it would make sense why everyone was so agile and why the Grimm can get so large, but Earth's gravity is the only solid constant I have to work with. Plus, I'm like 80% sure the animators animated stuff falling as it would on Earth to make things look proper, and if it's onscreen, it's law!

      In Heroes and Monsters, we have a scene where Ruby is falling from an airship and uses Crescent Rose to slow herself down. I'll ignore the first shot, since it's identical to subsequent shots, which is clearly wrong. After falling for .82 seconds, Ruby fires a shot and flies upward for .5075 seconds. To do this, Ruby would have to have a burst of 42.48 feet per second upwards. 42.48 feet per second at 170 pounds requires 7221.6 footpounds of force. 

      If our good buddy Newton is correct, 7221.6 footpounds backwards would be 7221.6 footpounds forward. Which means the rounds Crescent Rose shoots are as powerful as...

      Boring old .50 BMG


      Clearly, this is wrong. So what's up?


      "Vezeto, how can you even call yourself a nerd when you missed this!?"

      Well, after doing some research, it appears ballistics is some pretty crazy stuff. The main issue is that the bullet is much smaller than the gun, allowing it to accelerate differently than the heavier gun can. Using the Free Recoil Equation, I can find how how fast the bullet was going. Pair that with its mass and we got power.

      And of course there is no information on how heavy the bullet is. It's never that easy.

      I decided to stick with the good ol' .50 BMG for our bullet. I specifically chose the 800 grain variant since it is the largest. 

      You may wonder why I assume Remnant bullets are identical to our own. Well, besides desperately needing SOMETHING to grab on to, I noticed Remnant has chess. And baguettes. And suits and ties. Remnant has a suspiciously large number of similarities with our world, despite having few similarities in terms of culture. I'm not going to speculate on the origin of anything, but seeing how similar Remnant is already, I feel it's a safe bet to assume bullets are similar.

      Plugging everything into the Free Recoil Equation (ignoring the propellant parts, since Dust is a Nerd Analysis for another day), I get a bullet velocity of 63,189 feet per second.

      I plugged the mass and velocity into an online calculator to get power. I'm going to let the experts handle this one.


      They seem pretty reliable.

      This time, we learn the power of the bullets from Crescent Rose is...

      7,093,954 footpounds!

      Now we're talkin'!

      That's 476 times more powerful than the .50 BMG I keep bringing up.

      To put that in perspective, a 120 mm shell can do 10,564,752 footpounds.


      But those can't turn into scythes now, can they

      That about wraps up this Nerd Analysis. If you disagree with any of my estimates, I've walked you through my process, so try some calculations and see what you can find! If you enjoyed this, have any comments or questions, or future suggestions, let me know below! 

      Also, while doing this, I learned there is a LOT of information behind weapons. Way more information than I could hope to learn. Playing videogames or surfing Wikipedia does not make one an expert, so the next time weapons come up in conversation, please be mindful there is so much we don't know, and don't be arrogant. 


      "It's cool guys, I got 256 hours in COD!"

      Until next time guys!

      10 replies

    • Nerd Analysis: Coco's Minigun!

      in Forums > Nerd Analysis: Coco's Minigun! | Follow this topic


      Alright, so while fan theories are fun and all, what bugs me is that we don't have that much evidence to work with, and the evidence we have can be widely interpreted.

      So in the interest of switching things up, I shall call on the infallible power of math to learn more about the world of Remnant! Today, I will attempt to figure out what the rate of fire is on Coco's minigun. The RWBY Wikia states "The weapon's rate of fire is quick enough to evenly mow down a field of tall grass in one motion", but that ain't good enough. So I broke out my calculator, pencil, and image capture and got to work.

      Rate of fire is the number of rounds per unit of time. Time is easy enough; just use a stopwatch. The fluid motion that Coco used to mow the field took about 6.5 seconds. Finding the number of rounds is a little more tricky, I need to first find out how many rounds are needed to level the field of grass.

      To do that, I started by doing some pixel measurements of Coco and the arena to find out the size of the arena, since I could not find any dimensions for the arena on the RWBY Wikia. However, it DID state Coco's height, 6 feet. The shot I used was the 2:02 mark of Lessons Learned. I came up with 12 pixels high for Coco and about 956 pixels for the arena. 6 feet divided by 12 pixels is a half foot per pixel, times the 956 pixels gives us an arena that is 478 feet in diameter.

      I decided to round to 500 feet in diameter, since it is a manufactured environment and humans like nice, round numbers (think of the 100 yard football fields), although you are free to disagree.

      A simple 2 times pi times 500 gives us a circumference of about 3141.59 feet, and one forth of that gives us a 785 foot outer edge of the field environment.

      For the bullet size, I assumed the minigun was based off the M134, the same minigun you see in pretty much every movie. The M134 uses 7.62x51mm NATO rounds, which are 0.308 inches in diameter. I divided the edge of the environment by the bullet diameter, since I figure that if the bullets touch edge to edge at the furthest point of the map, you're sure to hit every blade of grass. I understand that due to the curve of the circle it will be slightly off, but in all honesty at that point you're splitting hairs.

      My math says that about 30,584 bullets are needed to do the job. Divided by 6.5 seconds, the rate of fire in rounds per second is...



      To put that is perspective, a M134 can fire up to 6,000 rounds per MINUTE. Coco's minigun is firing almost 50 times that.

      Even if we upped the bullet size so less bullets are needed, say, the M61 Vulcan's 20mm bullets, the rate of fire is still an obscene 110,488 rounds per minute, or 1841 rounds per second. The M61 also has a maximum rate of fire of 6,000 rounds per minute, and I have doubts of Coco using a minigun similar in size to ones they use on fighter jets.

      Odds are the rate of fire is even higher due to overspray, unless Coco is so familiar and precise with her weapon that she can fire bullets edge to edge.

      Granted, today we have guns that quite literally fire over 1,000,000 rounds per minute, but those use a stacked ammo system and multiple barrels. For those of you who don't know how stacked ammo works, it's alternating layers of bullet and propellant, so the bullets can be fired right after each other electrically. I don't think that Coco's minigun uses stacked ammo, but I suppose it is possible in theory.

      So, what do you guys think? Is this interesting? Does my math add up? Have any other concepts you want mathed out? If this was enjoyable, I have a couple other ideas for a Nerd Analysis that I can have up in a couple of weeks. Post a reply to let me know!

      8 replies

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