Research On Aerial Wind Measurement Of Multi-rotor UAV In Situ

Wind is a very important factor among all kinds of meteorological elements in the current atmospheric exploration.Our research mainly focuses on the analysis of air apoplexy detection method,in-situ wind measuring platform and various kinds of wind sensors,and puts forward the advantages and development of wind measurement method with wind sensor on multi-rotor UAV platform.The self-disturbance flow field of UAV is systematically analyzed when the method is used to measure wind by numerical analysis software and experiments,and we hope to provide guidance for the practical detection accuracy of this method.The main work of this research includes the following aspects:(1)Analyzing the existing airborne wind detection methods with focusing on the high-altitude in-situ wind measurement method.Comparing and assessing the advantages and disadvantages of various in-situ wind sensors,and pointing out that the multi-rotor UAV platform is equipped with wind measurement.The advantages and development prospects of sensors for airborne wind detection.(2)There is no relevant matching application principle problem of the platform's own spoiler field when the multi-rotor UAV platform equipped with the wind sensor for airborne wind detection and wind sensor accuracy requirement.The computational fluid dynamics analysis(Computational Fluid)is proposed.Dynamics,CFD)software simulates the airflow field of a multi-rotor UAV in an air hover flight state.(3)Modeling different types of UAVs through engineering drawing software to provide a physical model basis for cfd simulation.The relationship between the flow field characteristics around the multi-rotor UAV and the rotor speed,rotor pitch ratio,rotor size,rotor structure and number of rotors is analyzed and compared through cfd simulation.Based on the experience law of the correlation between the parameters such as the rotor tension,power and force effect of the multi-rotor unmanned aerial vehicle and the load weight,the simulation and the actual comparison test are carried out under the condition that the wind measuring sensor is not affected by the disturbance air flow.The design principle of the multi-rotor unmanned aerial vehicle platform and the principle of the installation and deployment of the wind-measuring sensor are obtained.It is of great significance to the application of the multi-rotor unmanned aerial vehicle to carry out the air-directed in-situ wind measurement.