alexa Reduction of Induced Drag by Single Slotted Raked Wing
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
Open Access

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Research Article

Reduction of Induced Drag by Single Slotted Raked Wingtip

Swagat Prasad Das1, Sangram Keshari Samal2, Radharaman Dalai3, Manas Ranjan Padhi4
  1. P.G. Student, Department of Mechanical Engineering, Centurion University, Bhubaneswar, India
  2. Professor, Department of Aeronautical Engineering, Bhubaneswar Engineering College, Bhubaneswar, India
  3. Assistant Professor, Department of Mechanical Engineering, Centurion University, Bhubaneswar, India
  4. Assistant Professor, Department of Mechanical Engineering, Centurion University, Bhubaneswar, India
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Abstract

In this research work the main aim is to reduce the induced drag by using single slotted raked wingtip. Here two wingtip geometries such as a sweptback & tapered wingtip and a slotted raked wingtip are taken for the research work. The tip vortex characteristics of the two different wing geometries at various angles of attacks are shown for different Reynolds numbers such as (1.82 x 105, 3.12 x 105 and 4.16 x 105). These Reynolds numbers are found out by changing the value of free stream velocity only keeping other values constant. The prediction for the numerical result of tangential velocity, lift coefficient and drag coefficient of sweptback and tapered NACA 0015 wing are compared with the experimental results. The numerical results that are obtained by using CFD code show a good agreement with the experimental results. It is observed that, the effect of Reynolds numbers on non-dimensional aerodynamic parameters are seen at higher angles of attack, i.e. above 8° for lift coefficient and above 6o for drag coefficient. It is found that the maximum coefficient of lift (CL max), stalling angle and non-dimensional aerodynamic parameters are increased whereas the drag coefficient is decreased with increase in Reynolds numbers. It is observed that the induced drag is reduced for a single slotted raked wingtip with increase in aerodynamic efficiency as compared to sweptback & tapered wingtip.

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