In this practical investigation that has been led to manufacturing a coaxial one-maned electric helicopter, the method of electric power supply has replaced fuel systems. In order to make a fundamental change in the power supply system or propulsion energy of helicopters, this project is introduced. First, by designing the basic specifications of the system, a preliminary design is obtained. Then, with the floating design of the parameters, the system is designed and built in such a way that, if necessary, and with the effect of uncertainties in the design, an appropriate response can be obtained from it. In this paper, the analysis, construction and testing of a one-manned helicopter with a special structure, with electric propulsion energy and integrated gearbox has been performed. Achieving technical knowledge of cost-effective production method of blades without mold (taper shape, aerodynamic twist and asymmetric geometry), design and construction of a planetary gearbox with 16 inputs and two coaxial outputs with the ability to reduce the number of inputs, the remote-control system of two sets of blades, and many others, practically paves the way for the construction of high-performance prototypes. Using mathematical and software analyzes, a suitable operating range for the system was obtained. The proper performance of the system was proved by designing, manufacturing and installing vibration absorbers. In the test stand that was designed and built for this purpose, while examining the vibrational behavior of the system, the ability of the system to lift was also successfully tested.