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Relevant bibliographies by topics / Spiroid winglets

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Academic literature on the topic 'Spiroid winglets'

Author: Grafiati

Published: 4 June 2025

Last updated: 23 June 2025

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Journal articles on the topic "Spiroid winglets"

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Rodríguez-Sevillano, Ángel Antonio, Rafael Bardera-Mora, Alejandra López-Cuervo-Alcaraz, et al. "Automation of Winglet Wings Geometry Generation for Its Application in TORNADO." Algorithms 16, no. 9 (2023): 439. http://dx.doi.org/10.3390/a16090439.

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The paper outlines an algorithm for the rapid aerodynamic evaluation of winglet geometries using the TORNADO Vortex Lattice Method. It is a very useful tool to obtain a first approximation of the aerodynamic properties and for performing an optimization of the geometry design. The TORNADO tool is used to systematically calculate the aerodynamic characteristics of various wings with wingtip devices. The fast response of the aerodynamic models allows obtaining a set of results in a remarkably short time. Therefore, the development of an algorithm to generate wing geometries with great ease and complex shapes is of vital importance for the mentioned optimization process. The basic outline of the algorithm, the equations defining the wing geometries, and the results for unconventional wingtip devices, such as blended winglets and spiroid winglets, are presented. Finally, this algorithm allows designing a procedure to study the improvement of aerodynamic properties (lift, induced drag, and moment). Some examples are included to illustrate the capabilities of the algorithm.

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Abd, Dalya Adnan, and Anmar Hamed Ali. "Aerodynamic Characteristics Comparison between Spiroid and Blended Winglets." Journal of Engineering 26, no. 4 (2020): 33–46. http://dx.doi.org/10.31026/j.eng.2020.04.03.

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Mostafa, Suhail, Shyam Bose, Archana Nair, et al. "A parametric investigation of non-circular spiroid winglets." EPJ Web of Conferences 67 (2014): 02077. http://dx.doi.org/10.1051/epjconf/20146702077.

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Guerrero, Joel E., Dario Maestro, and Alessandro Bottaro. "Biomimetic spiroid winglets for lift and drag control." Comptes Rendus Mécanique 340, no. 1-2 (2012): 67–80. http://dx.doi.org/10.1016/j.crme.2011.11.007.

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Viktor, Popov, Loginov Vasiliy, Ukrainets Yevgen, Shmyrov Volodymyr, Steshenko Petro, and Hlushchenko Pavlo. "IMPROVING AIRCRAFT FUEL EFFICIENCY BY USING THE ADAPTIVE WING AND WINGLETS." Eastern-European Journal of Enterprise Technologies 2, no. 1 (104) (2020): 51–59. https://doi.org/10.15587/1729-4061.2020.200664.

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Improving the aircraft’s fuel efficiency is one of the main requirements for prospective and modernized aircraft. This paper reports the assessment of change in aerodynamic quality resulting in the improved fuel efficiency of a long-range aircraft when using promising means to enhance aerodynamic quality. These means include the abandonment of the mechanization of wing edges and conventional controls through the use of an adaptive wing, the artificial laminarization of the flow around the elements of a glider, the application of winglets. The abandonment of conventional wing controls and wing mechanization is predetermined by the need to ensure a seamless surface of the glider elements to prevent the premature turbulization of the flow that consequently leads to a decrease in the profile drag of an aircraft. The use of winglets is aimed at reducing inductive drag. Determining a change in the aircraft’s fuel efficiency would make it possible to estimate a change in the operating costs during its life cycle. The study employed the known modular software complex «Integration 2.1». The engineering and navigational calculation was performed for a typical flight profile of a long-range aircraft. The possibility of reducing fuel consumption by up to 20 % has been shown. The largest impact on the decrease in fuel consumption is exerted by the flow laminarization on the surface of the glider elements; the reduction in fuel consumption was 17.1 %. The abandonment of mechanization and ailerons decreases fuel consumption by 3.9 %, while the abandonment of ailerons, slats, and flaps reduces fuel consumption by 0.4, 1.5, and 0.4 %, respectively. The use of spiroid winglets made it possible to reduce fuel consumption by 1.95 %

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Sormin, Muhammad Randy, and Rosyida Permatasari. "ANALISIS SPIROID WINGLET PADA PESAWAT SUBSONIC DENGAN VARIASI SUDUT SERANG TERHADAP KONSUMSI BAHAN BAKAR MENGGUNAKAN METODE COMPUTATIONAL FLUID DYNAMIC." JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI 5, no. 1 (2020): 1–7. http://dx.doi.org/10.25105/pdk.v5i1.6414.

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Winglet merupakan komponen aerodinamika yang digunakan pada sayap pesawat untuk mengurangi induced drag yang terjadi pada sayap pesawat saat terbang. Induced drag merupakan gaya aerodinamik yang terjadi akibat fenomena vortex pada sayap pesawat dikarenakan adanya perpindahan aliran udara pada lapisan batas dari bagian bawah sayap yang bertekanan tinggi ke bagian atas yang bertekanan rendah. Pada penelitian ini dibahas pengaruh bentuk winglet, yaitu spiroid winglet, pada pesawat subsonic yang akan mengurangi induced drag yang terjadi Penelitian dilakukan dengan melakukan simulasi menggunakan metode Computational Fluid Dynamics (CFD) berdasarkan sudut serang (Angle of Attack) pada sayap pesawat yang menghasilkan gaya angkat. Pada spiroid winglet dengan sudut serang 4o menghasilkan rasio koefisien angkat (CL) terhadap koefisien hambat (CD) yang terbesar. Dari analisis data koefisien angkat dan koefisien hambat diketahui terjadi penurunan induced drag sekitar 6% dan efisiensi bahan bakar yang terjadi sebesar 8% saat level terbang jelajah dan pada jarak tempuh maksimum.

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Fathi, Behrouz. "Applying Spiroid Winglet on The Tip of NREL 5 MW Offshore Wind Turbine’s Blade to Investigate Vortex Effects." E3S Web of Conferences 197 (2020): 08004. http://dx.doi.org/10.1051/e3sconf/202019708004.

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The present research describes the numerical investigation of the aerodynamics around a wind turbine blade with a winglet using Computational Fluid Dynamics, CFD. In this project our goal is to applying spiroid winglet to examine of the vortex effects on the tip of wind turbine’s blade known as “NREL offshore 5-MW baseline wind turbine”. At present this method has not yet been implemented in the wind energy sector, in particular because their production still involves excessive costs, compared to the benefits obtainable in terms of wind energy field. A spiroid winglet was investigated with different twist distribution and camber in which pointing towards the suction side (downstream). The comparisons have been done between two operating conditions in terms of pressure, thrust, torque, relative velocity, streamlines, vorticity and then mechanical power.

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PILLAI, T. GOTTFRIED. "Knightjonesia, a new genus (Polychaeta: Spirorbidae) with a winged opercular peduncle, and its taxonomy." Zootaxa 2059, no. 1 (2009): 46–50. http://dx.doi.org/10.11646/zootaxa.2059.1.4.

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It had hitherto been assumed in publications on serpulimorph systematics that spirorbids are characterized by an operculum borne on a wingless peduncle. However, while examining various spirorbid collections in the Natural History Museum, London, it was found that the type specimens of Helicosiphon platyspira Knight-Jones, 1978 possess a winged opercular peduncle, a character that had hitherto been used to distinguish between other serpulimorph genera. Accordingly, Helicosiphon platyspira is transferred to a new genus, Knightjonesia, in which the opercular peduncle is winged, in contrast with Helicosiphon in which it is wingless.

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Dissertations / Theses on the topic "Spiroid winglets"

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Kuei-Wen, Lien. "Numerical Investigation of Aerodynamic Efficiency for Spiroid Winglet with Blowing." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0002-2808200609354900.

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Lien, Kuei-Wen, and 連魁文. "Numerical Investigation of Aerodynamic Efficiency for Spiroid Winglet with Blowing." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/83397639677635417729.

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碩士<br>淡江大學<br>航空太空工程學系碩士班<br>94<br>Since 1976 Richard T. Whitcomb has shown that the efficiency of the aircraft equipped with winglet is better than other devices set at the wingtip, winglets are now incorporated into most new commercial and military transport jets. The concept of the winglet is very simple, disconnecting the roll-up vortices from the lower wing surface. A typical civil transport aircraft reveals that the skin friction and lift induced drag together represent more than 80% of the total drag, they constitute of two main sources of drag, approximately one half and one third of the total drag for a typical long range aircraft at cruise conditions. In this thesis, use computational method, and employ FLUENT software as flow solver. Using in computation the geometry of the wing is of Gulfstream IV, and its airfoil is chosen of Whitcomb’s supercritical airfoil. And the scale of spiroid winglet is described by using the height of wing span. In our case the height of spiroid winglet is about 4% of wing span. The cases we calculated including eight angles of attack, 0, 2, 4, 7, 9, 11, and 13 degrees. The three different configurations are the bare wing of no wing tip device, the wingtip equipped with spiroid winglet, and blowing on the spiroid winglet. From literature the maximum cruising speed of Gulfstream IV is of Mach number 0.85 and the economic cruising speed is of Mach number 0.8. So the speed in this computation is set at 0.8 of Mach number. The goal of blowing at the wingtip is to advance the customary time of decaying trailing vortices and reduce the strength of trailing vortices. We wonder what happened as the spiroid winglet and blowing at wingtip coupled together, and finally find a optimal result that reduced the total drag as well as the strength of the trailing vortex, thus the flight become safer, the fuel consumption become more efficiency, and the capacity of the airport could be bigger.

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Book chapters on the topic "Spiroid winglets"

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Dhileep, Karthick, S. Arunvinthan, and S. Nadaraja Pillai. "Aerodynamic Characteristics of Semi-spiroid Winglets at Subsonic Speed." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2718-6_20.

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Conference papers on the topic "Spiroid winglets"

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Kim, Subin. "Experimental Characterization of the Aeroacoustics of a Box-like Spiroid Winglet." In 2024 Regional Student Conferences, Region I - North East. American Institute of Aeronautics and Astronautics, 2024. https://doi.org/10.2514/6.2024-90597.

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