Can I Use A Giant Homemade Umbrella as A Parachute?

I custom built a massive 12 foot umbrella and tested it to find out if it can really work as a parachute! I COULDN’T BELIEVE the results!
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[colicrud]

Thanks for watching! I hope you’ll check out some other projects and share with your friends! They’re all pretty unhinged 🤫

[jonahfastre]

It’s a shame you’re not getting more views, this is awesome

[theironglitch]

Oh what the hell? Your not popular? I thought you had easily 100k+ keep it up man!

[iwantacheesesteak]

dawg this might be one of the coolest videos I’ve ever seen

[berumeru]

hey question: how come you never tried to put your foot in the hook of the cane? i feel like that wouldve allowed for a much more stable grip on the umbrella, and would help keep it in place as you glide down. altho i do recognize that it might make it more difficult to land safely. im just wondering if you ever thought of the idea.

[asher]

"I'd love to see someone try this at home" is so based

[BendsSpace]

The umbrella makes a bigger difference the further you jump from: without air resistance, you will accelerate forever, but with air resistance, the drag is proportional to the square of the velocity, so the faster you're going the more upwards force you get from the umbrella. I bet your terminal velocity is greatly reduced with the umbrella!

[Neekalos]

I was curious about some theoretical numbers, so I did some rough calculations. In case anyone is interested, I'll put my process at the end.

I found that falling with that umbrella will give you a terminal velocity of 24mph, the equivalent of falling from a height of 19.5ft normally. That means falling from an airplane with this umbrella would be safer than a 20ft fall, barring equipment failure. You would reach terminal velocity after around 3.2s and 87ft of falling.

Comparing that to a regular falling human, who would have a terminal velocity of 120mph laying flat (200 oriented vertically), and would reach it after 12s and 1500ft of falling. I'd say that's a pretty good improvement.

For some more comparison, an equivalent 5 foot fall would be 5.8ft, 10 = 14.3, 15 = 28.8, 17 = 46.3, 19.5 = 86 to ∞

So you would probably survive from any height, but there's a good chance you break an ankle from 30+ feet, and break your legs from terminal velocity.

It would be cool to see some testing with a dummy and see how close these numbers are (if at all).

Process:
I estimated the drag coefficient to be 1.2, which is about halfway between that of a hemisphere and a disc, and the area to be ~95% of a 12ft circle. I found the drag force equation using F=0.5pv^2AC, and then used that to determine a differential equation to model falling behavior with the umbrella (x''+0.026x'^2-32.2=0). I then ran it through a solver to find equations for a, v, and x, and used simple free fall to determine equivalent impact velocities.

[TreeLeeGames]

Will you make a bigger umbrella so you can jump off higher places? Like an actual parachute sized umbrella or would that become too hard to carry? Will you put a rifle inside the umbrella for extra protection?

[crafterbros]

Is Allen Pan made of bread is a really good question actually

[jasiucasic]

You should sort of "throw" the umbrella up so the handle is above your head then glide down with it. It could catch a gust of wind just before you leap off the ledge and hang all the way holding it above your head

[zbutter]

HOW DOES THIS NOT HAVE MORE VIEWS??! this was pretty dang cool!

[tayzonday]

I have SO MANY QUESTIONS totally unrelated to this umbrella 🤪🤔🤯

[Jackston.]

Here was me thinking you were one of those big YouTubers and I looked at only 1.5 thousand subscribers?? You deserve a lot more!

[MackyAr]

This is what youtube is made for. You are very creative😭

[Neekalos]

You need to add a circular disc partway up the handle that juts out to stop your hand from sliding. Maybe one for both hands even. It would be much easier than trying to solely rely on grip strength.

I'd also love to see some analytical tests where you determine actual drag numbers, terminal velocity, etc. to see how much it really slows you down.

Super cool video! This is the kind of thing we all dream of doing as a kid. It's awesome to see it engineered into reality.

[XXhite]

Redbull is writing up contracts for ownership of the sport as we speak.

[keelan]

Just discovered this channel. Crafting umbrellas, parkour, ridiculous concepts. Count me in

[wi]

How does this video only have 2k views this is so underrated

[fitybux]

You need a full body harness and some sort of weight-assisted falling. (That way, you can jump from let's say 30 feet, someone can have a brake on your line if you're falling too quickly, but you also get to see the stopping force of the umbrella. Like off a climbing wall.) No idea how you'd get the lifting of the harness to not interfere with the umbrella. Maybe maybe the umbrella stem part of the harness somehow?