Answered: For a finite wing, the three main…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Transcribed Image Text:**Understanding Drag Forces on Finite Wings** _For a finite wing, the three main contributions to the total drag force are skin friction drag (profile drag), pressure drag (form drag), and induced drag._ Select one: - ◯ True - ☑ False **Explanation:** When studying the aerodynamics of finite wings, it's essential to recognize the various types of drag forces that affect the wing's performance. Here, a common misconception is addressed and clarified through a multiple-choice question. 1. **Skin Friction Drag (Profile Drag)**: This drag results from the friction between the air and the surface of the wing. It is caused by the viscosity of the air, which creates a layer of slow-moving air along the surface, known as the boundary layer. 2. **Pressure Drag (Form Drag)**: Arising from the shape of the wing, pressure drag occurs due to the pressure difference between the front and the back of the wing. Streamlined shapes typically have lower pressure drag. 3. **Induced Drag**: This drag is associated with the generation of lift. It is a byproduct of the wing's lift generation and is due to the vortices that form at the wingtips, creating a downstream pressure difference. In this question, the statement outlines these three types of drag forces but may contain a subtle inaccuracy, leading to the correct answer being “False.” This reinforces the understanding that while these types of drag are significant, there might be additional nuances or another drag force contributing to the total drag not accounted for in the statement.

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