BibTeX:

@article{IJIRSTV1I11083,
     title={DESIGN AND DEVELOPMENT OF MULTI-COPTER},
     author={Hardikkumar Prakashbhai Patel, Mahendra Bharatbhai Thakor, Vimarsh Jayeshbhai Joshi and Jay Ramanbhai Patel},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={11},
     pages={166--169},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I11083.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

Unmanned aerial vehicles are aircrafts capable of flight without an on-board operator. Such vehicles can be controlled remotely by an operator on the ground, or autonomously via a pre-programmed flight path. UAVs are already being used by the military for recognizance and search and rescue operations. Our project is to design and build a Multi-rotor UAV. Our proposed design is for a lightweight, nimble craft that can be operated both indoors and out. The project poses particular challenges in terms of weight reduction and controllability. Multi-rotor crafts generally support only a light payload, as they are required to carry the weight of the power supply, a heavy battery, onboard. Thus, weight reduction of all components is essential in order to allow for sufficient lift force. The controls system for such a craft is also complex, as it requires the synchronization of four individual motors. These motors must be closely controlled in order to account for variations between the motors (one motor slightly more powerful than the others will upset the equilibrium of the craft), and in order to effectively dampen external disturbances. We succeeded in building a craft structure that was both stiff and lightweight, using carbon fiber and ABS plastic. We incorporated in our vehicle a closed loop, proportional control system which measured in-flight dynamics via a single axis gyro and two dual axis tilt-sensors. A microcomputer took these sensor inputs and performed proportional control on the four motors by varying PWM signals sent to each of the motors. The result of our project is an advanced prototype for autonomous flight. The controls software is fully operative, though it is hindered by unreliable operation of the tilt-sensors. Future work will allow refinements in the control system hardware that will ultimately lead to stable, untethered flight. Our user defined project is concerned about combination of helicopter & automobile vehicle for milatry purpose & during natural calimaties in which we are going to develop a prototype of this combined vehicle named mulicopter by using a small vehicle governed by remote control for controlling, having DC brushless motors for movment of vehicle in various direction. Thi Multi-copter is a vertical lift off and landing aircraft.

Multicopter, Multirotor, Quad copter, Black night Transformer, Unmanned aerial vehicles (UAV)