Abstract

The present paper presents the aerodynamic characteristics of a canard fixed-wing unmanned aircraft TERES-02. A wind tunnel experiment is conducted using a specially designed model of the aircraft. The model is produced through the methods of rapid prototyping using a FDM 3D printer. Aerodynamic corrections are made and thorough analysis and discussion of the results is carried out. The obtained results can be used to determine the accuracy of numerical methods for analysis of aircraft performance.

Highlights

  • TERES-02 is a Reconnaissance and Surveillance unmanned aerial vehicle (UAV) produced by TELESYS Ltd – Plovdiv, Bulgaria and designed in collaboration with the Plovdiv Branch of TU-Sofia whose maiden flight was held successfully on July 2014 (Fig. 1)

  • The designed wind tunnel model (Fig. 2) is to be produced using FDM (Fused Deposition Modeling or Fused Filament Fabrication) 3D printer followed by finish work

  • Wind tunnel The ULAK-1 wind tunnel located at the Laboratory of Aerodynamics in the Plovdiv Branch of TU-Sofia has a low Reynolds number, an open test area, a closed-loop research facility (Fig. 6)

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Summary

Main properties of TERES-02 UAV

TERES-02 (from TElesys REconnaissance and Surveillance) is a Reconnaissance and Surveillance unmanned aerial vehicle (UAV) produced by TELESYS Ltd – Plovdiv, Bulgaria and designed in collaboration with the Plovdiv Branch of TU-Sofia whose maiden flight was held successfully on July 2014 (Fig. 1). In order to fully analyse aircraft performance some basic aerodynamic characteristics have to be determined a priory. This could be done either theoretically (using numerical methods or analytical calculations) or experimentally. 1.2 Geometry of the wind tunnel model A 1:10 scale model of the real aircraft is designed to conduct an aerodynamic experiment. This is defined by the dimensions of the test section (600×400 mm) of the wind tunnel (Fig. 6). A special support of the model is designed to ensure attachment of the model itself to the internal aerodynamic balances. The support has mountable nose to ensure access to internal aerodynamic balance attachment screw

Production of the model
Methodology
Measured properties
Aerodynamic corrections
Results and discussion
Full Text
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