Optimization of composite wing spars for an unmanned aerial vehicle

Abstract

In this paper, the weight optimizing of an unmanned aerial vehicle wing spar was designed by using composite material. The optimization parameters were considered, respectively: the wing mass, the location of the spars and ribs, and the spars mass. Determined the selecting of wing spars locations for optimizing spars design based on the minimum weight of the wing. Layer optimizing was used to reduce the weight of composite wing spars. The thickness of front spar and rear spar element such as web and flange were optimized by criterion of allowable normal stress and deflection. The analysis of stress-strain state for all variants were carried out in the FEMAP software package. As the result of analysis, the total weights of composite wing spars reduced 18.17% than the original spars.

Wing Optimization Design Based on Composite Global Hawk Unmanned Aerial Vehicle

“…Frank et al [3] adopted a distributed structure to drive an intelligent deformable wing with an optimized design of the wing structure and a reasonable distribution configuration of the actuators to achieve minimal drive energy consumption. Aung et al [4] adopted the allowable directional stress method and the deflection criterion method to optimize the thickness of the wing spar, which reduced the total weight of the wing to a certain extent. Ricco et al [5] utilized the Kriging model response surface approach to optimize the position of the wing spar, which considerably improved the structural efficiency of the wing.…”

Improvement of Thermal Conductivity for Carbon Fabric Composites Base on the Fabric Structure

“…The thermal conductivity of fiber reinforcing materials depends on the thermal characteristics of the reinforcement fibers and on the pattern of the fabric structures. Currently, the question of the dependence of the thermal conductivity of fiber reinforcing materials on the fabric structure has not been studied much, so the creation of a method for evaluating the thermal conductivity of fiber reinforcing materials based on fiber structures is a key factor to development of manufacturing of fiber reinforcing materials [1].…”