Questions tagged [quadcopters]

A drone which uses four motors to fly.

Filter by
Sorted by
Tagged with
7
votes
3answers
161 views

What process should I use to ensure my motors are spinning the correct direction when using Betaflight

I heard that a lot of problems occur due to one or more motors spinning the wrong direction. What process should I take to ensure that all my motors are spinning the correct direction if I'm using ...
16
votes
3answers
326 views

How does a quadcopter yaw?

I've always wondered how a quadcopter actually yaws, when all propellers are horizontal. I know that two of the motors spins faster, but I don't understand how that generates thrust in the horizontal ...
12
votes
5answers
4k views

Why do most drones have upward facing motors?

Most freestyle quadcopters I have seen are specifically designed to fly with the motors facing upward and have the arms of the drone underneath the propellers like this: As you can see in the picture ...
9
votes
5answers
126 views

New Prebuilt Drone flipping on takeoff

I have a small quadcopter drone, immediately on takeoff it flips upside down, this happens all the time. What could be a potential problem? Edit: It is prebuilt and bought from a shop and has never ...
6
votes
3answers
212 views

How to determine the lowest safe ESC current rating for a drone build?

I was planning to build a quadcopter and was wondering how I should decide what ESC to get. I'm asking about ESC current ratings. I am building a 7 inch drone using 4s with 2306 1900Kv motors. I have ...
4
votes
2answers
106 views

What impact does a shroud have on the torque produced by the prop(s) of a multirotor that incorporates a properly designed shouded propeller?

Based on the research presented here: "Hover and wind-tunnel testing of shrouded rotors for improved micro air vehicle design" and other reading that translates similarly well-designed shroud and ...
4
votes
1answer
178 views

What's the purpose of airmode and idle up?

What are airmode and idle up and what do they do improve my freestyle flights?