Performance Comparison of the Optimized Inverted Joined Wing Airplane Concept and Classical Configuration Airplanes

Sieradzki, Adam; Dziubiński, Adam; Galiński, Cezary

doi:10.1515/meceng-2016-0026

Cited by 9 publications

(4 citation statements)

References 16 publications

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“…Tetrahedral meshes with prismatic layers to model the flow in boundary layer (BL) areas have been with ANSYS ICEM software. Such types of models have the capability of capturing not only turbulent flow in domain, but also laminar regions which potentially could have great influence on aerodynamic performance [41]. The mesh generated for the shapes I, II, III are presented in Fig.…”

Section: Cfd Analysis Of a Steady Sawtooth Motion At A Constant Angle...mentioning

confidence: 99%

Archive of Mechanical Engineering

Khalin

Kizilova

2019

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Performance comparison of different aerodynamic shapes for autonomous underwater vehiclesA brief review of the existing autonomous underwater vehicles, their types, design, movement abilities and missions is presented. It is shown, the shape optimization design and enhancement of their efficiency is the main problem for further development of multipurpose glider technologies. A comparative study of aerodynamic performance of three different shape designs (the airfoil NACA0022 based (I), flattened ellipsoidal (II) and cigar-type (III) bodies of the same volumes) has been carried out. Geometrical modelling, meshing and computational fluid dynamics (CFD) simulations have been carried out with AnSys15.0. The pathlines and wall shear stress distributions have been computed to understand the advantages and disadvantages of each shape. The lift and drag coefficients, aerodynamic quality, power index and pitching moment have been computed. The higher efficiency of the shape I/shape II at higher/lower angles of attack (> 20 • and < 20 • ) has been found. The shape III develops high speeds at the same angles of attack and has higher manoeuvrability at relatively low aerodynamic quality. The comparative analysis of the flow capabilities of studied autonomous undersea vehicles proposes some design improvement for increasing their energy efficiency and flow stability.

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Section: Cfd Analysis Of a Steady Sawtooth Motion At A Constant Angle...mentioning

confidence: 99%

Archive of Mechanical Engineering

Khalin

Kizilova

2019

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“…However, this theory does not apply to sweepangle wings. Adam Sieradzki et al [7] researched an inverted joined wing, with the front wing situated above the aft wing and connected at the wingtip. They found that the optimized lifting surface model of an inverted joined wing was better than the fixed-wing.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Studies of Small Box-Wing Unmanned Aerial Vehicle Using CFD

Sutthison

Wongkamchang

Sukuprakarn

2022

J. Phys.: Conf. Ser.

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This paper presents a computational fluid dynamics (CFD) simulation study of a small unmanned aerial vehicle (UAV) with airfoil s3010 and 245 mm chord length at a cruising speed of 17.5 m/s, compared with the aerodynamic characteristics of a 3D conventional fixed-wing UAV from a commercial RC airplane modified with a box-wing configuration. Simulation results showed that at an angle of attack of 0°, the lift coefficient increased by 60.005%, drag coefficient increased by 58.3299% and L/D ratio increased 1.0578%. The box-wing UAV had higher lift-to-drag ratio than the fixed-wing UAV. However, weight increased by 46.5%. The fuselage shape of the box-wing UAV in this study can be redesigned to shorten the rear area for drag and weight reduction.

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“…Finally, software for multidisciplinary optimization was developed and applied so as to take structural analysis into consideration as well [42,43]. The overall conclusion was that the applied airplane configuration does allow for the construction of an airplane with better performance, although, as the results presented in [44] show, its advantage against conventional airplanes is nevertheless marginal. Moreover, the authors of this paper have concluded that the inverted joined wing shows superiority over the conventional one because of the adverse interference effects at high angles of attack.…”

Section: Introductionmentioning

confidence: 99%

Electric Propulsion Concepts for an Inverted Joined Wing Airplane Demonstrator

2017

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Abstract:One of the airplane design concepts that potentially allows for significantly increased efficiency, but has not yet been investigated thoroughly, is the inverted joined wing configuration, where the upper wing is positioned in front of the lower one. We performed wind tunnel and flight testing of a demonstrator of this concept, first by applying electrical propulsion to simplify wind tunnel testing, and then the same electrical-propulsion demonstrator performed several flights. As the chosen propulsion method proved to be too cumbersome for an intensive flight campaign and significant loss of battery performance was also observed, the electrical propulsion was then replaced by internal combustion propulsion in the second phase, involving longer-duration flight testing. Next we identified and analyzed two potentially beneficial modifications to the design tested: one involved shifting the center of gravity towards the aft, the other involved modifying the thrust vector position, both with the assumption that electric motors can be applied for propulsion. On this basis, the paper finishes with some conclusions concerning a new concept of electrical propulsion for an inverted joined wing design, combining two ideas: hybridization and distribution along the aft wing leading edge.

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Performance Comparison of the Optimized Inverted Joined Wing Airplane Concept and Classical Configuration Airplanes

Cited by 9 publications

References 16 publications

Archive of Mechanical Engineering

Archive of Mechanical Engineering

Aerodynamic Studies of Small Box-Wing Unmanned Aerial Vehicle Using CFD

Electric Propulsion Concepts for an Inverted Joined Wing Airplane Demonstrator

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