Home -> Overview of animations -> Buoyancy and resistance on the wing profile

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.


The animation contains four areas with the following content:

Top leftA wing profile (Clark-Y) showing the buoyancy, resistance and total force. In addition, the weight force is shown.
Top rightDiagram showing the buoyancy and resistance coefficient as a function of the angle of attack
Bottom leftFormulas for the calculation of the buoyancy and resistance force
Bottom rightPolardial 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.


Title:Buoyancy and resistance on the wing profile
Target group:
  • Teachers and lecturers
  • Self-learners
Platforms (primary):
  • Microsoft® Windows®
  • Microsoft® PowerPoint®
  • Apple® Macintosh®
  • Enlargeable without loss
  • No installation required
DocumentsLicense Information
About the security of the Flash Player


Advanced animations for PCs

Die Animation zeigt, wie das Bein eines Fahrradfahrers gemeinsam mit der Pedale eine Kurbelschwinge bilden.
Construction of a crankshaft

Die Animstion zeigt einen Keil, der zwei Objekte auseinander drückt. Zudem werden die wirkenden Kräfte als Vektoren dargestellt.
Decomposition of forces on a wedge

Die Animation zeigt ein Objekt, dass sich entsprechend einer Positions-Funktion bewegt. Die Funktion kann interaktiv verändert werden.
Basic principles of differential and integral calculus

Die Animstion zeigt ein flüssiges Medium, das von einem Lichtstrahl durchdrungen wird. In Abhängigkeit von der Brechzahl wird der Lichtstrahl unterschiedlich stark gebrochen
Snellius law of refraction

Die Animation zeigt einen hufeisenförmigen Magneten. Im inneren Magnetfeld befindet sich ein Metallzylinder, der verschoben werden kann. Dadurch wird im Zylinder ein elektrischer Strom induziert.
Principle of electromagnetic induction

Die Animation zeigt das Kettengetriebe eines Fahrrads mit Gangschaltung und hinterem Umwerfer.
Structure and functionality of a chain drive

Further animations for smartphones / tablets

Separation of forces on the wedge

Induction by movement

Support us


Is there a mistake? Do you want to make an improvement? Please let us know. We would also be pleased to receive suggestions for improvement on text and / or translation.

* Not obligatory