RFPA(Remotely Piloted Aircraft System): or colloquially called Drones, are aircraft unmanned remotely, their high mechanical and technical complexity have required that pilots who operate them are certified. Say in some way the airplane has become professional.

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Part hardware of a drone is a configuration of engines mated in a structure of arms which may vary in number 3, 4, 5, 6 etc... The direction of rotation of the motor (and thus different Helix) is opposed to the next, it is a requirement of mounting, the physical principle is simple, to open a jam we apply two forces in opposite directionsdrone pag3, in the case of helicopters is compensated with the tail rotor

Choose the number of engines a drone is a fundamental criterion which is important as we are adding devices to it, we discovered that load tool that supports is directly linked with the number of engines, a parameter also to decide the engine we choose for example 2312E supports 300 g/motor, if we choose a structure of 4 will have a capacity of 1.2 Kg of total load, including the weight of the device, batteries, camera-giroscopic (Gimbal), systems of navigation etc...

The battery is one of the elements (e.g. a lithium battery 4S 5000mA/h ensuring us 30 minutes of autonomy 500 g, in some cases can weigh heavy and directly linked to the autonomy of the team spend a 3S to a 4S(major voltaje-4 elements in serial) can help us also get an extra of power.

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Navigation system:

Although the possibilities of mixing channels with a remote control would handle Motors of these devices, a navigation system that guarantees us the stability is essential, and take control of the team in situations of low battery or loss of the control of the unit, allows asi to the technician who pilots it to focus on other aspects like capture the images desired by the same.

Important note that the use of GPS antenna but with only a precision of +-3 m(compared with mobile +-10m) is quite acceptable to retrieve a device and get it back to its point of origin

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Uses of Drones:

In addition to recreational use and entertainment, the possibility to have a perspective view of height, with a small air device saves costs in inspections electrical, image recording,... but new applications for delivery of packages, surveillance or access to places of risk or radiometricas inspections are already underway.

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