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The objective of this paper is to analyze a complete fuselage of an airplane made of composite materials. The analysis presented includes designing a 3D fuselage structure in which parameters are calculated using various stress and deformation scenarios. Static numerical results propose a composite fuselage structure to reduce stress and deformation levels by 45 and 33% compared to an equivalent (existing) aluminum fuselage. This work is to continue with specific characteristics of the composite and considerations to more realistic loading conditions (dynamism, impact, fatigue). A complete study should suggest converting flying vehicles to composites, to increase performances, minimize weights, and improve payloads.

A methodology is developed that incorporates high resolution CFD flowfield information and a particle trajectory simulation, aimed at addressing Paint Transfer Efficiency (PTE) for bell sprayers. Given a solid model for the bell sprayer, the CFD simulation, through automeshing, determines a high resolution Cartesian volume mesh (14-20 million cells). With specified values of the initial shaping air, transient and steady-state flow field information is obtained. A particle trajectory visualization tool called SpraySIM uses this complicated flowfield information to determine the particle trajectories of the paint particles under the influence of drag, gravity and electrostatic potential. The sensitivity of PTE on shaping air velocity, charge-to-mass ratio, potential, and particle diameter are examined.