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Experimental investigation of a new spiral wingtip

Siddiqui, Naseeb and Aldheeb, Mohammed Abdulmalek and Asrar, Waqar and Sulaeman, Erwin (2018) Experimental investigation of a new spiral wingtip. International Journal of Aviation, Aeronautics, and Aerospace, 5 (2). pp. 1-32. ISSN 2374-6793

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Abstract

Experiments on the relative merits and demerits of slotted wingtips mimicking a bird’s primary feathers have been performed. The real emargination length of feather tips, their flexibility and curved shapes during cruise are considered in the present study. The experiments were performed at a Reynolds number of 3.7 x 105 on a symmetric flat plate half wing of aspect ratio 3. Lift, drag and pitching moments were measured using a six component aerodynamic balance. Four different shapes inspired by bird primary feathers have been analysed. The rigid curved tip performed the best increasing the L/D ratio by 20%. This improvement has been compared with forty different wingtips model available in the literature which shows that rigid curved tip provide better L/D performance. Based on this improvement the key performance indicator of Jet and propeller airplane has been calculated that shows a 7.8% and 9% increase in range for propeller and Jet airplane, respectively.

Item Type: Article (Journal)
Additional Information: 4277/63237
Uncontrolled Keywords: Experimental investigation, spiral wingtip
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Depositing User: Prof. Waqar Asrar
Date Deposited: 16 Apr 2018 14:51
Last Modified: 18 Oct 2018 09:49
URI: http://irep.iium.edu.my/id/eprint/63237

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