I want all the details of multicopter for represent in the seminar. full report.
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A multicopy is a mechanically simple aerial vehicle whose movement is controlled by accelerating or retarding multiple drive units / propellers downward. MultiCopters are aerodynamically unstable and absolutely require an on-board computer (also known as a flight controller) for a stable flight. As a result, they are "Fly by Wire" systems and if the computer does not work, it is not flying. The flight controller combines data from small onboard MEM gyroscopes, accelerometers (the same as those found on smartphones) to maintain an accurate estimate of their orientation and position.
The quadcopter shown above is the simplest type of multicopter, with each engine / propeller rotating in the opposite direction to the two motors on either side of it (ie motors in opposite corners of the frame rotate in the same direction). A quadcopter can control its rotation and pitch rotation by accelerating two motors on one side and slowing the other two. So, for example, if the quadcopter wanted to roll to the left they would accelerate the engines on the right side of the frame and slow the two to the left. Similarly, if you want to rotate forwards, accelerate the two rear engines and slow down the two front. The helicopter can rotate (aka "yaw") to the left or right by accelerating two motors that are diagonally facing each other and slowing the other two.
Horizontal movement is achieved by temporarily accelerating / slowing down some of the engines so that the vehicle tilts in the desired direction of travel and increases the overall thrust of all engines for the vehicle to fire forward. Generally the more the vehicle tilts, the faster it travels.