Unmanned aerial vehicle design for pressure washing building facades in Lima Metropolitan Area using hydrogen fuel cell

The following paper has the purpose of presenting an innovative solution for building facade cleaning using an unmanned aerial vehicle (UAV) that employs pressure washing technique and hydrogen fuel cell (HFC) technology to enhance flight autonomy. Indeed, the main design stages are both stated and explained within the paper. However, the design is separated in two stages: Conceptual and Preliminary. Thus, it begins with the research statement, state of the art revision and conceptual design proposal. Then, it continues with the development of the propulsion system, which uses a proposed recursive methodology for estimating, selecting, and then confirming all the inter-dependent elements such as motors, propellers, fuel cell and hydrogen amount. As the drone is treated as a mechatronic machine, the following design explores certain domains that help build it, such as: Mechanical, Electrical and Control. The Mechanical domain emphasizes on frame design, material selection, resistance calculations, pressure washing gun recoil analysis, and finite element and aerodynamic simulations. The Electrical domain focuses on component selection and power consumption verification while the last domain proposes flow diagrams and a PID control diagram based on an hexacopter mathematical modelling. Finally, the main flight parameters are simulated on SIMULINK, obtaining appropriate stabilizing and response times according to limitations cited.