Isabelle Bousquet Quadcopter June 12th, 2018 - 13:59:18
If you want to move forward the back two motors spin faster and the front two motors spin slower. This tilts the aircraft forward and vectors the thrust in that direction. If you want to roll then the same principle applies but on the lateral sides. If you want to yaw then you must understand angular torque. A spinning object will produce torque proportional to the speed with which it is spinning. That is why on traditional helicopters you see a main rotor and a tail rotor. If the main rotor is spinning counter clockwise the entire aircraft will want to spin clockwise to conserve angular momentum. That is why the tail rotor is necessary it produces the necessary thrust to counteract the forces of the angular momentum.
Ready-to-Fly are the most commonly used UAVs among general public hobbyists and entrepreneurs. As it is clear from the name these types of flying machines do not need much assembly as they come equipped with the required functionality and you only need to put in the batteries and you are good to go. These RTF vehicle are designed to provide the user with many basic and advanced features which are quite useful for a number of applications. The latest quadcopters come with a 12 MP camera for taking excellent quality aerial photos as well as record 4K video. They also offer live HD video streaming on your smartphone or any other hand-held device. The newest ones are associated with a mobile app to give you more control over its functionality as well as use a flight simulator for learning to fly. The flight times vary from model to model but a fairly good quality quadcopter provides up to 30 minutes of continuous flight time.
I knew that choosing the flight controller needed to come next. After all quadcopters replace mechanical parts with gyros. If you think about it it is really just like a computer game! Im a terrible helicopter pilot. I can barely control a coaxial beginners helicopter. Being able to use a flight controller was a big part of the appeal of a multirotor platform. The simpler flight controllers only have angular rate of turn sensors. These sensors are what we call gyros. They can sense when you are turning but that is all. A feature that I really wanted the flight controller to have was accelerometers. An accelerometer can tell in which direction is down by measuring the acceleration due to gravity. With this auto leveling feature I can let go of the control sticks when I get into trouble and it will bring it back to perfectly level attitude. This was very important to me!
The remote controller comes with a few buttons that can be pressed to adjust flight modes. Basically there are two flight modes available with any quadcopter: manual and auto. In manual mode when you tilt the copter using the roll control and then let go of the stick the copter will not return to its initial position. Instead it will stay tilted to the angle where you left the stick. On the other hand in auto flight mode it auto-levels itself back to its original stance once the sticks are centered. Make sure you practice and experiment with your copter to learn all the controls separately before moving on to the next section. If youre not familiar with the controls you will never be able to fly a quadcopter in peace. It will either move too fast or go upwards and hit the ceiling. Also see how slowly you need to throttle in order to take the machine off the ground safely and expertly.