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Analysis of the basic aerodynamic characteristics of an unmanned combat aerial vehicle based on a CAD model

Szczepaniak Robert, Czyż Zbigniew, Bąbel Robert, Mańka Amadeusz, Zahorski Tomasz, Omen Łukasz, Kosicka Ewelina, Matijosius Jonas, Ngouobe Japhet Noubiap

Advances in Science and Technology. Research Journal

2025

Vol. 19, no. 6

235--247

This paper presents an overview of selected unmanned aerial vehicle (UAV) designs to show the development of unmanned aircraft. In this context, the paper describes the application of CAD design in creating a 3D model in order to perform basic aerodynamic CFD simulations. The IAI Heron was selected for geometry modelling. Based on digital analyses of publicly available design materials and photographs, simplified models of the selected structure were created using the SolidWorks software. Basic aerodynamic characteristics of the developed geometric model of the AIA Heron were obtained by calculations made with ANSYS Fluent. The paper analyses the results obtained and compares them to data in the literature for a similar class of UAV. The prepared model will serve as a basis for future 3D prints. The developed CFD numerical model will be used for further comparative analysis and validation in wind tunnel tests.

The Influence of 3D Printing Direction on the Mechanical Properties of Manufactured Elements

Komorek Andrzej, Bakuła Mieczysław, Bąbel Robert, Woziński Paweł, Rośkowicz Marek

Advances in Science and Technology. Research Journal

2024

Vol. 18, no. 8

86--95

The internal structure of a material is crucial in the design of a number of components, especially those that carry significant loads. Also, the design of such 3D printed components should take into account the type of internal structure of a printed piece. The aim of the study was to evaluate the influence of an internal structure (degree of filling and printing direction) of a 3D printed component on its selected mechanical properties. To carry out experimental research, a set of PLA filament samples was prepared using 3D printing, using a MakerBot Replicator Z18 printer. The test pieces were manufactured in both longitudinal and transverse printing; both the longitudinal and transverse printing were made in two positionings: plane and edge. In this case, four different internal structures were obtained from which static tensile strength and impact tests were carried out. In addition, the samples were made with three different filling options: 100%, 70% and 30%. As a result of the research, it was found that the strength of elements produced by 3D printing from PLA is higher if they are printed in an edge formula, which means that the speed of applying subsequent layers probably plays an important role in building strength.