this kind of thruster could be really dangerous for following vehicle. road debris could be propelled toward following car.

Your channel would have many many more subscribers if more Americans believe in science. I hear people talk about gravity like it’s something that just happens, no law necessary! Cheers

Para todos los fanaticos de los "MUSCLE CARS" yankis!!!

This is merely a distraction. Who really will drive like this? Perhaps as a stunt. The more practical matter with EVs is they cannot sustain high speeds for any sort of distance and hence will never compete in Le Mann or Dakar rally or any distance race until such time as they can have much shorter recharge times. I will be much more interested to get a rocket fast charge time, so I don't have to twiddle my thumbs an hour while my one ton battery recharges. Then maybe I can take a Roadster and race it in a real race against ICE/hybrids and compete.

That's one hell of a mazda

Your math could be flawed. Unfortunately this will require a little Aeronautical Engineering and the understanding of ground effect. It will take much less Force to lift the car then you have calculated. This is due to the "ground effect." Think of a Hovercraft. I e the thrust as much less than you have calculated. I have 15 years in the aeronautical industry. You must calculate for ground effect to get the correct thrust

The Federal Motor Vehicle Safety Standards is not going to allow rockets and rocket fuel in cars....get real.

The truth is they can pretty much get it to accelerate as fast as they damn well please. It's just a tradeoff of boost time vs boost thrust. Air at 10,000 psi has a density of ~830 kg/m^3. A 500 L tank would be huge so assume ~400 kg of air onboard. Choked flow comes out around 300 m/s. So they have ~60m/s of delta-v onboard. Use it fast or use it slow.

700 m/s Isp is very optimistic. Gas generally can't be supersonic in itself. And adiabatic cooling means the exhaust from a 10,000 psi to RT decompression is going to be mega cold. 70s probably requires some amount of heating.

My brains hurts but this is amazing!

On a 1/4 mile dragstrip the tesla roadster 2,0 could have a 5 sec headstart and STILL lose vs a topfuel dragster...... Let that sink in...

Wake me up when we no longer travel with rubber tires 🥱

Although it, in theory, could lift itself up, not all of that power would be useable in the acceleration, only 40% would, looking at the proposed number of thrusters. Cornering wise, I suppose you would only need to use the extra push if you went over the limit part way around the corner.

how is that not just a straight up bomb

I know this is not the topic of this video but what is the point of this car?

😂😂😂

Doesn't having a 10000 psi tank behind you equate to driving a bomb around?

Huh, imagine the chassis rigidity, withstand all that torque, acceleration, and stopping power.

So this thing should weight almost exactly the same as the bugati chiron which dose 0-60 in 2.4 seconds and the tesla dose it in 1.9 so its safe to say this car should have at least 1500 hp

Thanks for the explanation, but why have you not considered that the 0-60 time of 1.9 seconds is with the rockets employed? Unless you can get the coefficient of tyre/tarmac friction above 1.0 (necessitating ultra sticky tyres & tarmac, and/or downforce) the calculated minimum time would be ca. 2.8s

Think about how modern Tesla’s reach 20mph in an instant, this is the roadster but with 40 or 50mph

YES. He watches JRE XD

The cceleration from 0 to 60 is certainly non-linear, so the max g's are even higher ;)

model s handling is mediocre - no problem

If the wheels are off the ground, does the car need power to the wheels?

flying car is coming, maybe?

Who cares how fast it goes in 0-60 its a car not rocket ship.

Is arms can lift less than his brain

0:29 Not based on my own assumptions. Then immediately assumes the weight.

can you please calculate the weight of the tank for storing that much compressed air?

Dude, you rock!!!

What a nerd

Dewah 77

Måned siden

Physician*

NOlocal search = Tesla trolling muscle cars This is a gutted P100D that is under 2000KG, so I think it is possible.

Why all the Elmer Fudd talk?

28" wheel in a car??

Subtitles in spanish please🙏

Very good explanations using formulas, thank you

He didn't factor in that Tesla would be advancing battery tech. It will not weigh 5000 lbs, it will simply have the 4680 battery cells.

I like turtles.

After battery day, the weight makes a lot more sense

I wish math was thought this way 😞

Elon: what if we put thrusters on a car, and make it hover Design team: that will be dangerous and a maniac behaviour Elon: do it

Damn I got an engineering degree and this video is still super lame

Hmm why is it sayin 1 second, we know 1.9 or 1.85 with the rockets that aren’t even on any plans of production. Also the Rimac C2 is already at 1.8 0 to 60. Sooo in my conclusion, get boned white board man.

Wouldn’t it be a compressor not a pump?

10000psi tank behind the drivers seat. What could go wrong?

How abt taking air resistance into acct?

That thumbnail tho

A rocket powere electric car? Go home Elon, you’re fried.

So, we're close enough to Hot wheel: Acceleracer, now....

Air at 10,000 psi is about 32 lb/ft^3. Assuming you use a regulator and design the nozzle to work most efficiently at say 2,000 psi you can run the rockets until the tank pressure is 2,000 psi. Air at 2,000 psi has a density of about 10 lb/ft^3. Assuming a 0.25 m^3 (9 ft^3) tank and converting to metric you have 130 kg of air at 10,000 psi and 40 kg of air at 2,000 psi, so you can do the rocket boost for up to 3 seconds. Theoretically, they could use larger nozzles and exhaust the air in 1/3 the time and give you way higher thrust. I bet this thing could do 0-60 faster than a top fuel dragster if they wanted to. Obviously you wouldn't want to put the average human through more than say 3g's for health reasons but technically 6g's or more is possible for a human to withstand. I can't wait to see this thing in action. I've been in a model S P90D and even that was kinda uncomfortable for me during a 0-60 due to the g-force. It would take some getting used to.

McHaZe

2 måneder siden

@PhotoGeorge No Kool-Aid. The physics works and they have the means to do it, so I am hopeful it will happen and be as cool as can be. Tesla makes fun products. I don't go around dissing things other people enjoy so I don't get the hate unless the haters have been hurt by their success, but that is not the fault of the company or the consumer.

If they didnt have the silly rules in F1 we would have had this available on all cars for about 10 years

I've enjoyed many videos so fa. Cold gas thrusters used in space for manuvering satellites, would require tank the size of the car absurd idea, to go of the road and crash. Very optimistic assessment well done for trying.

With more than 10,000Nm of torque, the Acceleration and G force would also increase, implying the weight of the car need not be 2000KGs, it can be more.

how much energy consumed to pressurize the tank? how long would it take to repressurize after emptying? how many times can you repressurize per full charge of the battery pack? Would be nice if you explained those calculations as well, thanks!

If new Tesla batteries are used weight will maybe 15% lower, if I understand the new batteries specs correctly.

Are we assuming the 1.9s to 60mph doesn’t include the thrust from the rocket? It’s hard to imagine a car accelerating to 60mph in 1.1s, it would be incredible to witness. I also had another thought. When the pump is sucking in air, could that be used to suck the car to the road? A bit like the F1 Fan car.

Glad he dumbed this down for you peasants.

The most useful aspect of this would be for cornering and braking when on ice. Incredible safety feature.

Broo are a car enthusiast or a mathematician?

I want one in white please.

Roads?! Where we're going We don't need Roads!!!

Seems extremely optimistic. If it’s even legal to drive around with a compressed air bomb in a car.

Ludicrous braking update --> navigate to closest brick wall.

The acceleration isn't limited by torque, it's limited by tire grip. You can't realistically work out the weight without knowning the tire details. Also, the range increase comes from a lighter car and significantly better aerodynamics, not just a bigger and more efficient battery. It's likely to weigh around 1800kg judging by competitor's cars.

So, your Tesla goes to e-1.1-ven. :-) Spinal Tap approved!

I think that the calculation of the wheel-based acceleration is suspect. Just because the wheel torque can produce a certain force at the wheel's surface doesn't mean that all of that force is available for acceleration: it's going to be friction-limited. Justifying an acceleration greater than g would require factoring in aerodynamically generated normal forces.

I'll be honest, it really annoyed me that you put 2.5g's and not 2.49g's

I feel like Sheldon Cooper is trying to sell me a car.

Problem at 11:45, You just made the assumption that the *number* of rockets pointing out the back are the same as the number of rockets pointing down, as though there is only ONE pointing down when clearly that would not be the case, you would need to divide by the number of rockets pointing down to determine what it is for one rocket then multiply by the number pointing out the back [and that is assuming all thrusters are the same].

I think putting such a high pressurised vessel in a car will be both very challenging and VERY dangerous.

It is missing the thrill of engine thunder

what a waste of energy

cant they shot the thrusters at a angle to the sky to get more grip to further use the motors power? seems more reasonable than using the thrusters to accelerate forward

the unions, and the lobbyists aren't going to let that happen. why pilots license's are so heavily regulated. why we have airports, and commercial planes, and not airstrips and private ownership of planes.

I expect this to be the first ever Tesla to be heck loud

So it's not the battery doing the job

Leave it to Elon Musk. I can foresee the commercials with Emmett Brown. I look forward to seeing if this thing is street legal and how well it actually performs. Rest assured that the lefties will have a field day trying to discredit it so that foreign competitors can catch up before Tesla manages to secure another market.

how is tire radius 28"? did i misunderstand?

do you use touch of grey lol?

I watched this video to study for my math test

K.I.T.T. would be proud

ADR: you can't make a car fly using rockets Elon Musk: haha Tesla go whoosh

CLICKBAIT

Rocket league comes real

air thrusters are a mechanism associated with motion right?

Fast and furious have rocket strapped onto a car though

Why not just use the thrusters to lighten the car, but still use the tires to accelerate along with the rear thrusters?

What if the pump (or pumps) kept the tank full or extended the run time? You are assuming the pump fills the tank, and drains the tank, like a balloon, with no other engineering.

What about cooling requirements of a gas compressed to 680 bar?

What about sound produced by supersonic flow? What about energy required to compress that air?

Someone's going to have to invent inertial dampers soon...

Elon Musk is such a douchebag.

3:24 Mass and weight aren't the same thing. The weight of the car is actually equal to its mass times 9.8m/s^2 which is earth gravitational acceleration so the weight is around 20,000 kg. Weight is originally supposed to be measured in newtons but we say it in Kgs for some reason so I understand the confusion.

weight =(( tourqe/ radius)/ acceleration)) 9.8m/s^2

so never ever drive behind a tesla roadster unless you want all the stones and junk from the streets hitting your car...

Just imagine sitting next to this thing at a light, then all of a sudden the light turns green and it sounds like a rocket taking off right in your ear. Like the sound of a contious gunshot.

What if we just attached this same system to a gas car to create a nitrous on the go system

Finally we get that Turbo button from knight rider for real... can't wait. 🤩

SPEAK INTO THE MIC