Design and performance analyses of a fixed wing battery VTOL UAV

Dündar, Özgür; Bilici, Mesut; Ünler, Tarık

doi:10.1016/j.jestch.2020.02.002

Cited by 63 publications

(32 citation statements)

References 19 publications

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“…Mittal and Muneshwar projected the design and development of a miniature UAV called Sparrow S that reaches cruise velocity of 80-90 km/h [45]. The velocities achieved by other miniature UAVs are listed as 70 km/h [46], 70-90 km/h [47], 75 km/h and 72 km/h [48]. According to the velocities of the UAVs in the literature and in the market, three different velocities were selected to categorize the velocity of fixed-wing UAVs in three groups: 90 km/h, 65 km/h and 40 km/h for high-velocity UAVs, mid-level velocity UAVs and low-velocity UAVs, respectively, as displayed in Table 2.…”

Section: Numerical Analysismentioning

confidence: 99%

Investigation on Surface Roughness of PolyJet-Printed Airfoil Geometries for Small UAV Applications

Gülcan¹,

Günaydın²,

Çelik³

2022

Aerospace

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The present study focuses on producibility and surface roughness characteristics of airfoil geometries and their effect on aerodynamic performance for different velocities, surface roughness values and angles of attack. Two different tray orientations (along X and Y axis), two different build directions (vertical and horizontal) and two different surface finish settings (matte and glossy) were used to evaluate the effect of these parameters on the surface roughness of both up- and down-facing surfaces of airfoils produced by PolyJet. On both surfaces, surface roughness measurements were performed on two crossing directions. The results showed that horizontal build direction where surfaces of airfoils were parallel to the build platform experienced lower surface roughness than the vertical build direction. Vertically oriented specimens showed a considerable degree of distortions especially in trailing edges along with very high surface irregularities on side walls. In general, glossy or matte finish settings resulted in similar surface roughness values and specimens located along X direction showed better surface quality than specimens located along Y direction with an inconsiderable difference. Besides this, CFD analysis revealed that surface roughness caused by printing strategies directly influences the aerodynamic performance of the fixed-wing UAVs (Unmanned Aerial Vehicles) to considerable degrees. The increase in the drag force coefficient, due to surface roughness, reached almost 7.5% for high cruise velocity at 0° angle of attack and 13% at 10° angle of attack in which stall commences.

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Section: Numerical Analysismentioning

confidence: 99%

Investigation on Surface Roughness of PolyJet-Printed Airfoil Geometries for Small UAV Applications

Gülcan¹,

Günaydın²,

Çelik³

2022

Aerospace

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“…Berat total pesawat tersebut 5 kg, dengan geometri wing span 1,5 m dan mampu terbang dengan kecepatan 25 m/s. Generasi UAV dengan konfigurasi VTOL berikutnya [6][7][8], sedangkan UAV yang mampu membawa muatan 8 kg selama 3 jam dengan radius operasionalnya 35 km memiliki berat MTOW 45 kg [9].…”

Section: Kajian Pengembangan Pesawat Uav Kebanyakan Menggunakan Konfiunclassified

Analisis statik kekuatan struktur pesawat UAV vertical take off-landing VX-2

Santoso¹,

Saputra²

2020

Senatik

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“…In the recent years, multiple novel methods have been proposed to improve the performance of VTOL UAVs. For example, Ozgür Dündar proposed to employ an aerodynamic design steps and sizing of both wing and control surfaces to improve static stability and endurance [6]. Wu et al employed multiple sensors to design a UAV system for emergency response [7].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Design of an Aircraft-Mode Controller for a Fixed-Wing VTOL UAV

Zhao

You

2021

Mathematical Problems in Engineering

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Vertical takeoff and landing (VTOL) is an essential feature of unmanned aerial vehicles (UAVs). On the one hand, VTOL can expand and enhance the applications of UAVs; yet, on the other hand, it makes the design of control systems for UAVs more complicated. The most challenging demand in designing the control system is to achieve satisfactory response sharpness of fixed-wing UAVs to control commands and ensure that the aircraft mode channels are effectively decoupled. In this work, a six-degree-of-freedom (6-DoF) model with forces and moments is established based on the aerodynamic analysis, which is carried out through computational fluid dynamics (CFD) numerical simulation. The improved proportional derivative (PD) controller based on the extended state observer (ESO) is proposed to design the inner-loop attitude control, which increases the anti-interference ability for internal and external uncertainty of the UAV system. The motion equations of the UAV are established and divided into independent components of longitudinal and lateral motion to design the outer loop control law under minor disturbance conditions. A total energy control system (TECS) for the longitudinal height channel is proposed, which separates speed control and track control. L1 nonlinear path tracking guidance algorithm is used for lateral trajectory tracking so as to improve curve tracking ability and wind resistance. Effectiveness of this approach is proved by actual flight experiment data. Finally, a controller based on angular velocity control is designed to prevent the attitude and head reference system (AHRS) from malfunctioning. Its effectiveness is verified by the response test of the control system.

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Design and performance analyses of a fixed wing battery VTOL UAV

Cited by 63 publications

References 19 publications

Investigation on Surface Roughness of PolyJet-Printed Airfoil Geometries for Small UAV Applications

Investigation on Surface Roughness of PolyJet-Printed Airfoil Geometries for Small UAV Applications

Analisis statik kekuatan struktur pesawat UAV vertical take off-landing VX-2

Modeling and Design of an Aircraft-Mode Controller for a Fixed-Wing VTOL UAV

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