In order to improve the crashworthiness of UAVs, this paper improves and designs a wheeled UAV structure from a traditional quadrotor platform, focusing on its drop impact response characteristics. Aiming at the drop impacts that wheeled UAVs may face during flight and landing, this paper systematically investigates the structural response of UAVs under different drop conditions based on the display dynamics theory. By establishing a refined finite element model containing a tyre cushioning system and using ANSYS/LS-DYNA finite element simulation, the maximum equivalent force distribution law with or without wheels, at different drop heights and multi-angle attitudes, is analysed. The simulation results show that the presence of wheels significantly changes the drop impact stress transfer path and reduces the risk of damage to critical parts of the fuselage. This study provides a theoretical basis and engineering guidance for the impact resistance design of wheeled UAVs.
The purpose of this study is to establish a high-fidelity rigid-flexible coupling model of an unmanned aerial vehicle (UAV) by combining the finite element method (FEM) and multi-body dynamics method (MBD), which can be used to accurately capture the complex turning behavior of a UAV on the mobile platform....
Kai Ma, Haoyuan Shao, Zi Kan et al.· Aircraft Engineering and Aer...· 0 citations
This paper presents the development and validation of a comprehensive mathematical model for a Miniclass unmanned aerial vehicle (UAV), optimized for highfidelity flight dynamics simulation and the design of intelligent control systems. The model provides a rigorous analytical description of aerodynamic forces and mome...
O. Volkov, M. Komar, Ihor Popov et al.· Automation, Control, and Inf...· 0 citations
This technical paper focuses on predicting strains in the high strain gradient regions of landing gear to airframe joints in the nose module of an Unmanned Aerial Vehicle (UAV) using a non-linear analysis approach. The study aims to improve the accuracy of strain prediction by considering Geometric non-linear behavior,...
This paper presents a methodology for the multi-objective optimization of protective structures for DJI Avata 2 unmanned aerial vehicles (UAVs). The modified platforms are specifically adapted for search and rescue (SAR) operations, the inspection of destroyed buildings, infrastructure, and linear facilities, as well a...
Vitaly Yakovchuk, Illya Zhydenko, Andrii Velykyi et al.· Advances in Science and Tech...· 0 citations
Currently, the aerodynamics of unmanned aerial vehicles (UAVs) is not given due consideration, as it is generally believed that there is no need to improve something that already flies well. However, recent combat experience has demonstrated that UAV engagements will obviously raise questions about aerodynamic characte...
S. D. Karakulov, N. Mitiukov· Himičeskaâ fizika i mezoskop...· 0 citations
Aerodynamic interference among rotors strongly affects the flight performance and power consumption of multirotor unmanned aerial vehicles (UAVs). This paper develops a flight-mechanics model that couples dynamic inflow theory, a rotor vortex-tube wake model, blade element theory (BET), and UAV rigid-body dynamics to e...
Lin Lu, Han-Jie Yuan, Jin Li et al.· Journal of Physics, Conferen...· 0 citations
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