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# Buoyancy and resistance on the wing profile

The following animation illustrates the principle of dynamic buoyancy.

Note: You can enlarge and reduce the four areas by mouse click.

The animation was developed as a offline application for Windows and Macintosh systems and for integration into Microsoft PowerPoint slides. The online version presented here serves as a preview. The exe or app file can be downloaded free of charge in the member area.

Nach dem Download kann die Animation im Vollbildmodus angezeigt werden. Auch die Einbindung in PowerPoint ist möglich.

## Description

The animation contains four areas with the following content:

Top left A wing profile (Clark-Y) showing the buoyancy, resistance and total force. In addition, the weight force is shown. Diagram showing the buoyancy and resistance coefficient as a function of the angle of attack Formulas for the calculation of the buoyancy and resistance force Polardial diagram for the representation of the buoyancy coefficient as a function of the resistance coefficient

The animation makes it clear that even with an blade angle of 0 degrees still a buoyancy occurs. This fact can not be explained mechanically (Bernoulli principle).

The animation is based on measured values that have been determined in a wind tunnel with a Clark-Y profile (see source information). The resistance was smaller than in the animation. In order to make the resistance more apparent, it was multiplied by a factor of 10.

## General

Title: Buoyancy and resistance on the wing profile Teachers and lecturersSelf-learners Microsoft® Windows®Microsoft® PowerPoint®Apple® Macintosh® Enlargeable without lossNo installation required License Information About the security of the Flash Player

## Sources

• Idea and first concept: Tamara Riehle
• Idea and first concept: Tamara Riehle

Construction of a crankshaft

Decomposition of forces on a wedge

Basic principles of differential and integral calculus

Snellius law of refraction

Principle of electromagnetic induction

Structure and functionality of a chain drive

## Feedback

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