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Design and Longitudinal Stability Analysis of a Stealth Unmanned Aerial Vehicle

Zekiye Çinar,RABİA UZUN,Tolunay DAĞ,Tuğrul Oktay

  • Zekiye Çinar: İskenderun Teknik Üniversitesi Havacılık ve Uzay Bilimleri Fakültesi
  • RABİA UZUN: İskenderun Teknik Üniversitesi Havacılık ve Uzay Bilimleri Fakültesi
  • Tolunay DAĞ: İskenderun Teknik Üniversitesi Havacılık ve Uzay Bilimleri
  • Tuğrul Oktay: Erciyes Üniversitesi Havacılık Ve Uzay Bilimleri Fakültesi
  •  Year : 2025
  •  Vol : 4
  •  Issue : 2
  •  Page : 153-167
This study includes the design and investigation stability of aircraft. The designed unnamed air vehicle (UAV) mission is conducting observation and gather intelligence without being detected by enemy radars. The designed UAV has fixed wing, mass of 10 kg and cruising speed of 30 m/s. The most important characteristic of UAV is use stealth technology.To select using stealth technology for UAV because the detection of UAVs using stealth technology is more difficult than that of conventional UAVs. When design, the initially selected wings profile analyzed use XFLR5 software. After choose S1210 airfoil profile among the other airfoils. Because S1210 airfoil profile has the best lift coefficient and minimum drag coefficient. The tail airfoil profile uses symmetric airfoil NACA 0010 because appropriate of aircraft design. Then selected profile, configuration selection phase exists. At this phase configuration selection for wing, fuselage, tail and landing gear. Mid-wing and T-tail configurations are used because they provide the aircraft with better balance and stability. Conventional fuselage and articulated landing gear configurations are used because they provide the aircraft minimum parasite drag and undetected by enemy radars. Then selected configuration, designed aerodynamic and control surface with specific dimensions and after the aircraft has been drafted using CAD software. Payload consists of T-Motor MN4014 brushless motor, compatible 40A ESC, 4S 5000mAh Li-Po battery, and Teledyne FLIR Hadron 640 imaging system for day and night reconnaissance missions. Then design phase, state-space matrices has been created because aircraft designed to investigate longitudinal stability. In the matrix parameters used to XFLR5 software derived from the stability of analysis and elevator deflection is OpenVSP software derived from the analysis. The finally, PID controller used for investigation stability and the best system’s response was derived.
Cite this Article As : Çınar, Z., Uzun, R., Dağ, T., & Oktay, T. (2025). Design and Longitudinal Stability Analysis of a Stealth Unmanned Aerial Vehicle. Aerospace Research Letters (ASREL), 4(2), 153-167.

Conflict of interest : The authors declare that they have no conflict of interest.

This article is published under the CC BY-NC 4.0 license.
Asrel Aerospace Research Letters
2025, Vol4, Issue2
E-ISSN: 2980-0064
Received : , Accepted : , Published Online :

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