WEBVTT

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today bmw unveils the all-new ix an

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electric crossover that looks freaking sweet but instead of talking about the

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car bmw sponsored this video to focus on

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the billion euro r d headquarters that they just built to make designing cars

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like the ix as efficient as possible now munich is freaking awesome and under

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normal circumstances i would have been happy to go out there again to check it

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out but you guys know the drill global pandemic

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thankfully a german camera team was able to go in our stead and fire back a bunch

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of footage that ranged from insanely cool to

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martians playing golf philosophers hey why did we get this and for that matter

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why does it exist and we were given access to bmw's engineers to ask

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whatever questions we wanted this is

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going to be a hell of a ride

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a couple months ago we were pretty happy with the driving simulator that we built

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big screen comfy chair that moves around when you hit bumps and such what more

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could you ask for oh oh

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yeah that is on a whole other level what

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you're looking at right now is a test of the site acceptance test high fidelity

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simulator which has 400 square meters of

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play area to toss around its 83 tons of

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mass the sat high fidelity simulator is able to not just faithfully recreate the

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.65 g's you'd get from launching an m3 but is actually able to accurately

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simulate the 1g cornering force of a formula e car this combination of

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accurate longitudinal transverse and rotational movements along with vr

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glasses or a headset allows bmw's engineers and test drivers to experience

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the feel of driving a car long before the first physical prototype

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is ever made and some of you are probably thinking at this point

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wow Linus 83 tons of mass being tossed around like that probably requires a lot

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of energy and you'd be correct the high fidelity simulator can consume up to six

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and a half megawatts of power delivered by freaking super capacitors now the

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full featured simulator isn't expected to be online until early to mid next

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year but when it is and travel's okay

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bmw call me

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now all this attention to making a car fun to drive might make people want to

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drive rather fast in it particularly in germany so bmw uses both active and

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passive safety features to help their customers avoid the woo-woo mobile

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active safety features try to prevent a crash in the first place like lane

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assists emergency braking and various self-driving modes and these are great

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when you're daydreaming about retiring to a cranberry field getting up each

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morning to overlook your beautiful bog when holy crap there's a person active

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safety features are cool and all but the testing of the passive features is a lot

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more fun to look at the key to making a car crash as safe as possible is to

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design the structural layout of the car so that the outside can be destroyed and

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in the process dissipate enough energy to keep the driver inside safe the

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engineers there said that the more contact area you have in a crash the

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better so fun fact if you're cruising for a head-on

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bruising and you can't avoid the other car outright a more direct impact means

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that the structures of the car will have their best chance of safely slowing you

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now the main crash test dummies used are called the hybrid three they were

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originally developed by gm in the 70s but have since been adopted by the

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society of automotive engineers making them the industry standard but bmw has a

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full family of dummies with six adult sizes and four children another fun fact

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while each one of these dummies costs more than the car they're strapped into

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the test device for human occupant restraints aka thor here makes the rest

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of the crash testing costs look tame it's worth as much as a house

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in vancouver the reason thor is such an expensive boy is that he is extra packed

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with sensors to measure forces on the ribs thorax and other bones to determine

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the likelihood of harm to an actual human being in a given crash now because

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thor does his best work in the blink of an eye getting good footage of him can

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be a bit of a challenge that's where these 50 high-speed cameras

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come in each one of them records at either 1 000 or 5 000 frames per second

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generating about one Gigabyte of footage per test holy shnikeys

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and the 50 cameras aren't even my favorite thing in the room now as you

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guys might know getting good high speed footage requires

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mirror spoolbecklin vol of light

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for perspective this right here

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is our brightest studio light it consumes about a thousand watts of power

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hit me ah

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yep that's pretty bright alright

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but at fiz nord okay you can put it away it's hot too they have

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350 times as much light to make sure that they can clearly see all of the

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action and you know what the best part of all this high speed camera tech is

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it's the redundancy the crash test dummies are strapped with up to

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192 signal channels to record acceleration pressure path power and so

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on so basically right after the crash the engineers have all the data they

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need the high speed footage is then just used to verify all their findings wanna

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know what's even crazier before the test even starts the engineers know what the

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forces in all the sensors are going to be crashing the cars is already just

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verifying the numbers that they simulated man computers are cool what kind of

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computers you ask first let's take a moment to appreciate the detail that's

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required for this type of simulation a car will have about 12 million

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elements 4 000 individual parts and 8

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000 screws and spot welds running a simulation like that that's got to take

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days right not if you have 120 000 CPU cores then

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it's more like 5 to 25 hours depending on the test now most of you have

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probably noticed that it feels like there's a bit of a lag between when

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fancy electronics get unveiled to the public like a new GPU or a super snappy

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ipad and when equivalent tech is available in cars and there is a good

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reason for this verification if a bit flips in your

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desktop gaming rig the worst that can happen is a blue screen during a ranked

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siege match in a car well there's a lot more at stake this is

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why bmw now has four emc or

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electromagnetic compatibility testing halls emc testing is looking for two

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main things that components aren't emitting too much electrical noise and

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that their operation isn't influenced by outside electrical noise according to

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the engineers getting any individual component within spec is pretty easy but

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these days almost every component in the car has wires and electricity running to

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them and the interaction of it all can get very complex for example the fuel

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pump is going to emit a little bit of electronic noise during operation which

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you probably won't notice unless that noise happens to be in the same

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frequency band as the radio causing your favorite beats to disappear when you hit

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the gas each of the four emc halls basically looks like a massive anechoic

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chamber but instead of trapping noise these walls are designed to trap any

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stray electromagnetic radiation behind the wall is shielding to prevent any

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outside electromagnetic radiation from getting in now the hall is designed to

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work between 150 kilohertz to 6 gigahertz but measurements can be taken

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outside of those frequencies just with less ideal test results the benefits of

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this are twofold the tests can be accurate without any reflections or

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outside interference and also they aren't pumping electromagnetic noise

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across the rest of the facility this is especially important when they're

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testing how the components hold up to external radiation these antennas and

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signal generators basically turn the whole room into a massive microwave

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wienerschnitzel anyone in about every room in this building there's probably

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an entire LTT video's worth of cool tech but we only have so much time today so

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let's quick fire around some of the other cool things in the workshop

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testing and measuring building or wpn on the top floor there are 100 test benches

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and 200 laboratories on the second level there are 12 large test benches that

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together pump about a thousand liters of hydraulic oil per minute a 220 meter

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corridor and an axle testing room we weren't able to see all of this

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unfortunately largely because they're working on prototypes of vehicles that

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are a long way from even being announced in some of these rooms but with the ix

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being the latest to finally see the light outside of the facility gives me a

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lot of hope for the work that they're doing inside it of course no high-tech

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lab is complete these days without some vr this allows engineers designers and

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executives to get a much better idea of how sitting in the car will feel

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compared to looking at it on a screen in particular they said that this can be

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advantageous for designing leather work in the past this would be done on a

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physical model of the chair but because the designs are constantly changing by

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the time their designs are done the dimensions of the chair might have changed well now they're able to import

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accurate textures onto the latest 3d models and then look at it in vr to make

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sure that it can hold up in both light and dark environments and this is all

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powered by a top-tier gaming pc or at least well it was top tier when we got

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this footage hopefully they're subscribed to LTT so they know how to upgrade it to ryzen 5000 and one of the

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latest gpus huge thanks to bmw again for sponsoring this video and letting us

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take a look inside their crazy facility as i said before when the time's right

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i would really like to take another crack at this one but but actually

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driving the simulator instead think they'd let me do that yeah yeah yeah if

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you guys enjoyed this video maybe check out our last bmw video where i had a

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look at a sweet concept motorcycle that bmw put together