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Design and Longitudinal Stability Analysis of a Stealth Unmanned Aerial Vehicle

Design and Longitudinal Stability Analysis of a Stealth Unmanned Aerial Vehicle

Tuğrul Oktay, Tolunay DAĞ, RABİA UZUN, Zekiye Çinar

  •  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.

Description : Yazarların hiçbiri, bu makalede bahsedilen herhangi bir ürün, aygıt veya ilaç ile ilgili maddi çıkar ilişkisine sahip değildir. Araştırma, herhangi bir dış organizasyon tarafından desteklenmedi.Yazarlar çalışmanın birincil verilerine tam erişim izni vermek ve derginin talep ettiği takdirde verileri incelemesine izin vermeyi kabul etmektedirler. None of the authors, any product mentioned in this article, does not have a material interest in the device or drug. Research, not supported by any external organization. grant full access to the primary data and, if requested by the magazine they agree to allow the examination of data.
Design and Longitudinal Stability Analysis of a Stealth Unmanned Aerial Vehicle, Research Article,
, Vol. 4 (2)
Received : 26.08.2025, Accepted : 22.10.2025 , Published Online : 26.12.2025
Asrel Aerospace Research Letters
ISSN: ;
E-ISSN: 2980-0064 ;
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