úterý 28. listopadu 2017

HOW DO DRONES FLY?

AUTOR RHETT ALLAIN vystavil návod, vysvětlující podstatu letu dronu.
Najdete ho na portálu "wired.com", konkretně na adrese:
https://www.wired.com/2017/05/the-physics-of-drones/
Cituji z úvodu:
"I OWN A drone. Maybe you do, too. I use mine to make simple videos and annoy my dog. Drones are quite popular these days, and you can get a nice one without spending too much money. Oh, I'm talking about the remotely controlled flying vehicles with four rotors, not the bigger drones scientists use to study climate change and stuff. Those cost a lot of money.
Small drones like mine are easy to fly—a skilled pilot can hover and fly in just about any direction, which makes them great for recording video. But how does a drone actually fly? Ah, this is an excellent opportunity to look at some physics."
Nadpisy odstavců:
- Vertical Motion
- Turning (Rotating)
FUN WITH PHYSICS
- Forwards and Sideways
- Using a Computer
Cituji ze závěru:
"By now, you've surely noticed that every movement is accomplished by changing the spin rate of one or more rotors. Doing that simply requires a controller that can increase or decrease the voltage to each motor. That's not too difficult to set up. But just imagine this—you have a drone with 4 controllers. You'd need one controller for each motor power level. It would be crazy difficult to manually adjust each motor power to achieve the desired motion.
However, if you have some type of computer control system, you can simply push a joystick with your thumb and let a computer handle all of that. An accelerometer and gyroscope in the drone can further increase the ease and stability of flight by making minute adjustments in the power to each rotor. Add a GPS system and you can pretty much get rid of the human entirely. So you can see that flying a drone is pretty easy if you let the computer do all the work. But it's still nice to understand the physics behind it."
Video-animace pohybu vzduchu během letu dronu:
Video je uvedeno takto:
"Stunning 3-D Animation Reveals How a Drone Moves Air

Here's what air looks like when its swirling around a DJI Phantom 3 drone in flight. The 3D animation is more than just a cool rendering, it's purpose is to help designers create faster, quieter drones."
Video najdete na stejné adrese jako článek.

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