How to buy and fly a quadcopter drone by Roland Büchi

Author:Roland Büchi
Language: eng
Format: epub
Publisher: Books on Demand
Published: 2016-09-14T16:00:00+00:00

4.3 Landing

Each flight is only as good as the subsequent landing. This is true for each hovering, no matter how beautiful and successful it was. Damage almost never occurs in flight, but only when the aircraft is more or less smoothly coming into contact with the ground. Therefore, in the first flights the quadcopter should only be hovering at a height of about one meter. If at this height the pilot has the feeling that he can’t master his quadcopter any more, he should quickly pull back the gas control stick. This can be, for example, because the quadcopter breaks out to one side, or because it rotates too quickly around the vertical axis, or because you lost the orientation to the system. Most quadcopters which are suitable for practice survive without damage a hard landing from one meter. In doubt it is always safer to take away the gas. With incorrect control commands things can get even worse. For example, the quadcopter can gain more altitude or will fly further away. If your quadcopter is already floating slightly higher than one meter because of a slightly overly strong gas position and if you are also concerned that you could lose control or the orientation of the quadcopter then you should bring the nick and roll stick to the middle position.

Try first to withdraw the gas gradually, so that the landing is not quite as rough. But that may be easier said or written in the theory here than done in practice. The best case is of course always the one in which you want to make the landing of your own free will. So this is then a controlled hover. Here you take the gas only slightly back, so that the quadcopter passes into a slow descending flight. You continue controlling the nick and roll stick and try to keep the position as best as possible. Additionally, depending on the extent of your practice, you can also try to control the yaw axis with the corresponding stick, so that you always have the view to the rear also during the landing phase.

Once the quadcopter is then quite close to making contact with the ground, you take the gas even further back and it sets down on the floor. Now drive the motors into idle and turn them off completely.

With some systems, it can be observed that after a slightly harder landing the quadcopter is revving up the engines and hops again to a height of a few centimeters. Only then does it finally set down on the floor. This happens due to the internal controllers and the sensors, as these also respond to changes in the accelerations.

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