Spraying disinfectants as a preventive measure in preventing the transmission of COVID-19 is still being carried out by officers manually surrounding all parts building. Technological developments modern era can help and simplify this job. One way to take advantage technology during pandemic use drone or an Unmanned Aerial Vehicle (UAV) spray indoors. An unmanned aircraft whose flight be contro...

To reduce carbon emissions, hybrid-electric aircraft could replace conventional turboprop on regional operations. Because of the limited energy density provided by batteries and requirements concerning reserves for operations under instrument flight rules (IFR), a range extender will be required to achieve commercially relevant ranges. In serial hybrid concept with electric motors driving prope...

Recent progress of electric systems has raised attention towards hybrid-electric and full-electric aircraft. Nevertheless, the current low battery energy density limits application these propulsive architectures to large transport In context general aviation category, aircraft for so-called Urban Air Mobility scenario are gaining increasing interest. These air taxis, also called e-VTOL, conceiv...

Internal symmetry in proteins is likely to be the footprint of evolution by gene duplication and fusion. Like other symmetrical proteins, β-propellers, which are made of 4-10 β-sheet units (blades) circularly arranged around a central tunnel, have probably evolved by duplication and fusion of a rudimentary repetitive unit. However, reproducing the evolution of functional β-propellers by duplica...

In this paper the cascaded fuzzy controller system for quadrotor steering and stabilizing was deliberated. The mathematical model of quadrotor and its cascaded fuzzy controller were simulated using Matlab Simulink software. The fuzzy system was divided into three subsystems for controlling position and speed of the quadrotor and for steering rotation speed of propellers. In the article the squa...

Today’s unmanned aerial vehicles are being utilized by numerous groups around the world for various missions. Most of the smaller vehicles that have been developed use commercially-off-the-shelf parts, and little information about the performance characteristics of the propulsion systems is available in the archival literature. In light of this, the aim of the present research was to determine ...

In this article, recently proposed control methods, suitable for trajectory tracking in fully actuated unmanned aerial vehicles (UAVs), are reviewed and experimentally compared. We specifically focus on multirotor platforms with tiltable propellers, which the thrust torque delivered by each rotor can be oriented within aircraft frame using servo actuators. First, main assumptions underlying des...