/sci/ - Science & Math

Fans pushing something up from below is going to create an unstable equilibrium. That means a slight tilt to the left will cause the fans to push it even further to the left, and so on.

Now if you had suction instead of fans, tilting to the left would cause more suction to the right, stabilizing you. Vacuum boards are much more feasible than hoverboards.

>>7517950
It's funny, that the thought of a suction fan to create a push never occurred to me!

So that's one problem solved sort of, but that kind of rotates back to the original question i had of how much force is needed?

>>7517950
>>7517954
Holy fucking shit

>>7517940
>We have toys now that hover using little fans, so why is it that someone hasn't enlarged the scale and shoved it into a skateboard with two engines below it for each fan?

Because we don't have the technology yet to put a fan under our ass and use it to lift us up. It's a sorcery we cannot control.
https://www.youtube.com/watch?v=P_-PQdrgw2A
https://www.youtube.com/watch?v=akA-B64RACU

>>7517950
Which direction do you propose the suctioned air be dispersed? I'm guessing equally to 2 sides.

>>7517992
funny how your statement is kind of half true, goofy ass design yet it's still barely off the ground despite the money invested into it

Heck, why don't we just attach helium filled balloons to vehicles, carefully calibrated to float just a few inches above the ground?

It works for final fantasy xiv.

>>7518014
because we're running out of helium if you can believe it.

trying to come up with a solution that doesn't use a finite resource.

>>7518017
>trying to come up with a solution that doesn't use a finite resource.

hydrogen balloons

>>7517950

genuinely can't tell if trolling or retarded

>>7518024
think of how the air vents in your car works; it pulls in air from the outside and blows air at you.

same principle but with a fuckton more air blowing out

>>7518017
It all comes back to vacuums then. Use empty evacuated containers large enough to displace the weight of the container material and the carried cargo. The trick is finding a material strong enough to not buckle under exterior air pressure.

>>7518021
I know, let's making a flying car with hydrogen, moved along by propellers!

Then we'll call it the Hindenburger

>>7518038
The Hindenburger - It's a blast!

>>7518004
If you want to fly, there are better and safer ways to do it, you know: rotary-wings'n'shit.

Those two video refer to two products that are designed to float near the ground, not to fly high in the sky.

Now, remove this hook from my mouth.

>>7518014
>add the slightest amount of payload
>the vehicle crash to the ground, regardless of your careful calibration

>>7518024
Reading >>7518026 I can tell you that Poe's law has already kicked in.

>>7517940
It's the fuel consumption and battery power that make it somewhat inefficient. Adding your weight onto it would kill the power it needs to run.

>>7518021
Enjoy igniting at midair

>>7517950
/sci/ full of shit as usual
https://www.youtube.com/watch?v=W3FS3D1rCos
>>7518282
Basically this, you can do it but because of the power to weight (70 lbs of dead weight aka the human on something that can't be bigger than a coffee table or else you may as well make a whole fucking helicopter) they barely fly. I honestly think such a thing is still worth marketing now because of the recent hoverboard craze meaning that people will actually pay £5,000 to float 10 feet off the ground for 20 minutes

>>7519593
*70 kg

>>7517950
This is total bullshit, you can put objects on top of a quad and still fly it.
>>7517940
This hoverboard craze has gone off the charts. All because of one movie made 30 years ago.

>>7517940
>We have toys now that hover using little fans, so why is it that someone hasn't enlarged the scale and shoved it into a skateboard with two engines below it for each fan?
why is it that laymen always ask questions that boil down to "WHY HASN'T ANYONE ELSE THOUGHT OF THIS? DUH!" on topics they very obviously have no idea of?

I mean this question alone is so mind bogglingly retarded
>how much force, fans and whatever else would it take to lift a platform of say 450 sq. miles 2800 ft. off of the ground like that city in bioshock infinite?
you want to know the FORCE required to lift an AREA at a defined ALTITUDE
gee, I dunno, last time I calculated forces it had something to do with mass and acceleration, not altitude and area

if you don't even posess a basic understanding of mechanics, let alone aerodynamics, why do you still feel like you know things better than someone who actually studied them?
if we could achieve a hoverboard-like device by simply scaling things up then we would've done it by now, wouldn't we?