The Truth about Drone Deliveries!

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Marques Brownlee
Weren't we supposed to have drone deliveries by now? Real Engineering video: https://youtu.be/jEbRV...
Video Transcript:
- All right, so you see this? This, this is a drone. And when I say drone delivery, I think most people picture something like this trying to deliver packages, which is just.
. . That's ridiculous.
That's way too much. But the thing is I've been looking into drone delivery for the past little bit, and it is very, very different than that. And I also thought we were supposed to have drone delivery by now, so let's talk about it.
(graphic warbling) (upbeat music) All right, here's a crazy stat. 85% of all of Amazon's deliveries are under five pounds. 85%.
And that's from Amazon's own numbers when talking about their own aerial delivery service that they've been pouring millions of dollars in development for years into. And then I saw videos of it, and it looks like this. This thing hovers down to 15 feet off the ground, drops the package on the ground, and then the propellers kinda blow it away, and then it takes off again.
This seems a little insane to me. I'm obviously not gonna trust this with anything fragile. I would never order a GPU or a smartphone and watch it get dropped on the ground like that.
It's also gonna be loud, and that thing is huge if you can tell by the scale of the stuff in the videos. So they started testing in California and Texas, but I haven't really heard much from them otherwise on that. Apparently, Alphabet also has a project called Wing, another drone delivery system.
The website is very promising, but I punched in my own address and a bunch of others, and I can't seem to find any areas where they're actually doing this. So maybe if these huge companies aren't nailing it, then it's just not practical in general and it's not something we can expect anytime soon. But on the other hand, I feel like I can think of just a couple nice neat little examples, these perfect little use cases where it makes a ton of sense.
Let's say you're a new parent at home and you just ran outta baby formula and you need more of it ASAP, but you can't really leave the house with the baby. Drne delivery. Or, maybe I'm out somewhere at a remote place and I cut myself and I need first aid, and a car can't get to me, but a helicopter is a little bit overkill.
Drne delivery. Or even just for that DoorDash. Surely, surely we don't need a 4,000 pound private taxi for our burrito every single time, right?
Drne delivery. So I'm digging into this, and it turns out there is one company that is huge in this space, far bigger than the other big companies I've been looking at, and they're by far the largest autonomous drone delivery fleet in the world at this point. They're called Zipline, and what they've been showing is way more advanced than anything from Google or Amazon.
So I had to go check it out for myself. They didn't sponsor this video or anything like that. Basically, they were just nice enough to pull back the curtain and let me ask a bunch of questions that I have about drone delivery, and now I have all the answers.
(upbeat music) All right. Finally, a nice weekend out in the middle of nowhere, just me and a frisbee, and I think I forgot my power bank. That's crazy, the one thing I need.
Hold on a second, Let me just place an order. And done. It says, ETA, 30 seconds.
Okay, great. Yeah. That's perfect.
Just 20 or so more seconds. Oh. Yeah, that tracks.
Yep. Appreciate you. That's exactly what I needed.
Let the vacation begin. (laughs) Like I said, probably one of the coolest things I've ever seen, very advanced. Now, Zipline has been doing autonomous drone delivery since 2016, but it didn't start off this advanced.
Their first generation product matured into this thing right here, known as Platform 1. Less of a drone, more of a fixed -wing autonomous aircraft, but it was assembled on launch site with whatever cargo is going into it, launched from a giant slingshot, drops to the delivery location by coming out of the bottom of the drone with a parachute, and then it would turn around, and fly back home where it was caught out of the air by a huge string on a hook at the tail of the craft. I got to watch them demo all of this.
It is exactly as insane as it sounds. The launch is crazy. It basically slingshots it from 0 to 60 miles an hour in a quarter of a second.
And the catch is even more insane. If you watch it in slow motion, these arms holding onto the wire actually move at the last second to snag the drone outta the air with precision. And there's millions of other tiny impressive pieces of tech that make this work.
As complicated as this is, this is what essentially became the first autonomous drone delivery system at scale. And it's had massive success delivering blood and other medical supplies to hospitals around Rwanda. So it's saved thousands and thousands of lives to this point and actually continues to to this day.
There's a Real Engineering video from six years ago about this. There's also a Mark Rober video from one year ago. They both show this really well.
I'll leave those videos' link below the like button. But they've iterated since then, and now their current generation, AKA Platform 2, is just incredible. This is the most advanced drone delivery we've ever seen.
So it's made up of one drone with both articulating propellers and a fixed wing, and then a smaller sort of droid that zip lines out of the bottom of it to gently place the delivery on the ground with dinner plate precision, hence the name Zipline. So here's a closer look at the drone P2 in its docking station. So it's actually docked from the top and this is where it takes off from and comes back.
The bottom part here is where that Zipline drone comes out, but you can see the rest of the body is actually mainly styrofoam. And this wing here, carbon fiber, super rigid, super light. Weight is at an ultra premium.
The batteries stored up in the front here, and this entire thing with the motors, the propellers, this articulating propeller to switch between forward flight and hover flight, 55 pounds, which is pretty ridiculous. So then this is the Zip. This is the little droid that gets lowered down from this point here to actually deliver the package.
And there's still a ton of tech on this as well. First of all, this is how they load it up. All carbon fiber on the inside.
The bottom is the two doors, which is the floor, but it also slides left to right to open, and it has these feet. But then it has the thrusters. So this is the big thruster on the back, which can move it forward and backward.
But there's also some right here and right here, which can combine to turn it and change its orientation. So it's using all of that plus the sensors at the bottom to see what's below it, to orient itself, to place it exactly where it needs to be, open the floor, drop it off, and then zip right up. And all it weighs is five pounds.
It's crazy light. So here comes the drone. This is how it works.
It's relatively quiet. It's gonna stay about 100 meters off the ground. About a football field, right?
So then once it's narrowed down exactly where it's going to lower the zipline. It knows exactly where it wants to drop it. So it's not like it'll accidentally end up on the roof or in the pool or some random place.
Okay. Now any second, it should start dropping. There it goes.
So it actually descends pretty quickly, which I guess shouldn't be surprising. It's gravity-assisted. But now it's gonna drop down and it's actually looking at the ground.
So if something does get in the way, and if there's a dog there, some random unexpected something, then it will sort of move around and adjust, but. . .
(drone whirring) Drps it off, floor opens, floor closes, and then it gets pulled back up like a fishing line. And there's the thing that I ordered. There is just an incredible amount of tech making this happen autonomously, GPS, computer vision, material science, and it's so cool that it all comes together and actually works.
But if you're anything like me, you're watching this and it's cool and everything, but you still have a ton of questions in the back of your head, logically speaking, about how this can work. And don't worry, I had the same questions, so I asked them, and these are the answers. (upbeat music) Okay, so probably the number one question, how loud is it?
Because I don't want drone deliveries if it means I have to hear this loud buzzing sound all day. that would be terrible. And so the answer is actually really encouraging.
So they have a whole team of people working on the acoustical engineering problem, that is quiet drones. And they're messing with different propeller designs and algorithms to spin the propellers at different speeds during different stages of flight to minimize harmonics. Combine all that with the clever zipline method, which means the drone never actually gets below about 100 yards up, like a football field away from people when it starts dropping the little droid.
And so the result is it's actually shockingly quiet, especially when compared to a normal consumer drone like DJI Mavic or something, which has this really piercing sound. Okay, then, another question. How long does a drone delivery actually take?
So let's just stick with the classic food delivery example. So first of all, the restaurant still has to make the food that takes the same amount of time. Then they have to get it picked up by the drone.
Now, there's a theoretical future where restaurants and other small businesses can have this drop off point. That's essentially a hole in the wall that they just put the order in for the drone to pick it up from. It would have to be relatively inconspicuous.
But even for companies that don't wanna do all that, they've prototyped these standalone passive structures. So the idea is to make it easy for the restaurant to just walk outside and leave the package in the structure where the drone can pick it up with the Zipline system. I actually saw a demo of this working as well, and it was technically pretty impressive.
Once fulfillment happens, the average food app delivery is three to five miles. And so that's well within the 20-mile range of this thing. And they cruise at 70 miles an hour.
So theoretically, there's a world where you order something online, and once it's packaged, you get your delivery in three to five minutes. So, okay, then what if it's windy or raining? Can it still work?
Turns out, yeah. Absolutely, it can. Not only are these things rock solid, but they're designed specifically to be able to fly in basically anything short of hurricane force winds.
Like I said, they cruise at 70 miles an hour, so they have some power, and the whole thing is waterproof the same way a car is waterproof. It has to be able to withstand getting pelted by water at every angle. And I did witness a pretty windy delivery before we started rolling our cameras.
It was also at night, but the thing dropped down our food successfully right in front of us, and it was fine. Really the goal should just be to be able to do anything that a regular delivery truck could do, plus all the benefits of being cheaper, quieter, faster, fully electric, and working 24/7. So then the elephant in the room is just basically, is it safe?
I think everyone's basically wondering, could one of these drones potentially fall out of the sky? What if a propeller breaks or something? And so as you can imagine, the people designing this system know this is a huge deal and they wanna avoid any sort of liability issues.
So they have engineered this system to be absolutely ridiculously bulletproof. There's redundancies through every critical system and all the wiring so you can. .
. They told me you can literally cut a wire inside this thing, and it'll still fly home. It can lose not one but two propellers and still fly home.
And the internal systems are performing 500 safety checks per second, and of course is doing autonomous obstacle avoidance, and even talking to other Zipline drones in the area to do these coordinated movements with each other. But then, okay, of course if all else fails, there is a parachute system. So if it must fall out of the sky, it will at least fall slowly.
The end result or at least the current result is they have flown 100 million miles so far with zero safety incidents involving humans. It's 100 million miles. It's a pretty good start.
Now, it's still early and there's notoriously always a difference between testing and real life, but they have tested heavy crosswinds. They've tested, obscured, weird landing spots changing, someone pulling on the zipline while it's delivering, all that stuff. In case you're wondering, it'll just cut the zip line free if it detects that to avoid crashing at all costs.
(upbeat music) Okay, so I have seen a lot here, the evolution from their first generation to the second generation vehicle, their massive testing facility with all these docks and dozens of drones launching and flying simultaneously, and their manufacturing facility too. The component testing, acoustic engineering, big shout out to Zipline for pulling back the curtain on all the work they've been doing and how far they've come. It was cool to see this stuff.
So now in my head I'm trying to fast forward a few years, and imagine a future where this is successful. What does that world actually look like? And I think there's a path to this being real.
I've spoken to doctors in hospitals in Rwanda who vouched very directly for countless lives saved by drones delivering blood for transfusions or anesthesia drugs for emergency surgeries. So that's a pretty obvious and convincing use case that this will continue to be useful. This won't replace Amazon deliveries for people who live in apartments or people who live super far from retail shops.
But for certain specific deliveries, I think the benefit is undeniable. There's no human needed. It's dramatically cheaper.
It's much faster. It's quiet, It's emissions-free and it works 24/7. It also turns out Rwanda was a pretty ideal first place to start testing.
Small country, hilly, lots of thunderstorms, windy. And also, with a government that's willing to work with them on a lot of regulation, because regulation, especially in the US, it's a lot of work there. There are different classes of airspace, all the different rules.
So just in general, that's something you need an entire department for. So ultimately, here's my take. Drne delivery, super cool.
Very technically impressive. It's not gonna be for everything. Trucks aren't going anywhere.
But for very specific deliveries that are both small and time-sensitive, drone delivery can actually make the most sense. I'm picturing I fly to some tech event somewhere. I didn't rent a car.
I've gotten there with my camera, but I forgot my memory card and I need it pretty quick. Drne delivery. Fly the thing to wherever I'm at, drop it off.
I would love to live in a world where that is possible. This very much feels like it unlocks a new dimension of travel for a few specific things, some things that were impossible or impractical with a vehicle, and also some things where it literally means one less vehicle on the road. And it was cool to see a relatively small company innovating and competing with the big dogs on this.
I've seen these things fly high enough and fast enough that they're basically invisible in the sky before they come down to do the delivery. So I'm not worried as much about noise pollution, but I am a little bit about visual pollution, particularly in the night sky, in the same way that like Starlink is incredibly useful for internet around the world, but is concerning for the view of the night sky. But that's a whole nother video for another day.
But yeah, only time will tell if people are ready for this. Thanks for watching. Catch you guys in the next one.
Peace.
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