Crash Analysis of UAV Hybrid Composite Fuselage Structure under Different Impact Conditions

Abstract

Due to the rapid scientific and technological developments in the aerospace industry, the requirement for safety and energy absorption efficiency is increasing, and in order to achieve that target, the analyzing of the sudden crash is required to know how to reduce it. Therefore, the main objective of the present work is to analyze the crashing response of the hybrid composite fuselage structure during different impact landing conditions. Moreover, extract the maximum acceleration at the most important locations in the UAV fuselage where most of the critical system is installed. The explicit non-linear finite element software LS-DYNA/WORKBENCH ANSYS is chosen to simulate the crushing of the referenced and the proposed UAV fuselage and investigate the maximum crushing accelerations responses on the payload under different landing conditions. The numerical results show that strengthen the fuselage structure using hybrid composite material has a notable effect on the energy absorption, and transferred acceleration on the payload. Moreover, the hybrid composite fuselage structure can reduce the transferred acceleration on the payload up to 39.65% in comparison with the metal fuselage. In addition, to study the crash analysis during sudden accidents is very important, in order to find the way to reduce it, but can’t avoid it. Hence, the UAV payload should be arranged to avoid the maximum acceleration.

An analytical view on Unmanned Aircraft Systems

“…• Payload Payloads are generally high and low resolution camera/video cameras, day and night reconnaissance equipment, high-power radar, gyro-stabilizer, electro-optical signal, meteorological, chem-bio relay, welfare machinery and generally any equipment required for the mission , the UAS is designed [29]. High fuel fraction is demanded by UAS with the desire for endurance.…”

“…The advantages of UAS are: better and sustained alter nature in comparison to humans through dull operations. The operations related to UAS are in concern with the scope regarding Japanese Ministry of Agriculture, forest and fisheries and are related associations which are affiliated with Japanese agricultural aviation association [19,20,22,23,25,27,29,30,34].…”

Finite Element Analysis on the Arms of Multirotor UAV

“…In other words, FEA/FEM involves application of mathematics to understand and evaluate structural, fluidic, thermal and wave behaviour, apart from other applications. FEA employs Partial Differential Equations (PDE) to solve any problem [8]. These equations solve problems in engineering mechanics like evaluating admissible quantities of a structure (stress, strain, etc.).…”