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This website is the result of a work by Louise Roblin, Mathilde Chadail, Alain de Christen, and Pierre-François Pinard throughout their first year of Science at the Jean-Pierre Vernant Sevres (Ile de France).

This work was developed as part of the TPE (Supervised Independent) of the first class.

You can contact these four students with the webmaster or by visiting the "Contact Us" at the bottom of the site.

Finally, this work is accompanied by a DVD that you can now download here. To read it on a DVD player and basic access menus, make sure you extract the file and copy its contents directly to the root of a blank disc.


In this work we wanted to understand why an aircraft flies and how the geometric and aerodynamic characteristics of wing play a special role.

The principle of flight of an airplane is not simple and the evolution of aviation, and groping, is there to remember. We give therefore, to begin, a brief history.

In a second step, we discuss the principle of flight of an airplane. Much of the literature refers to an explanation: the Bernoulli principle, which we will explain. That's why we felt it important to illustrate this phenomenon through four experiments that we conducted and explained. We then detail the physics of flight of the aircraft, namely the mathematical equations that govern its motion.

We then examine the wing of the aircraft. For that we made a montage with a model of a moving wing, demonstrating the effect of lift of the wing (lift), and measured, using a digital anemometer, the speed difference between the top (surface) and bottom (underside) of the wing. So we had a first experimental confirmation of a speed increase on the upper surface, although the usual explanations about the origin of the overspeed have proven inaccurate. The overspeed is accompanied by a decrease of pressure on the upper surface, we also wished to measure this phenomenon. For this, we contacted research organizations. Finally, the Palais de la Découverte allowed us to access a mini-tunnel instrumented, we give the measurement results in the report.

Having characterized the wing of a more precise, we define such fundamental concepts as the coefficients of lift and drag, induced drag, and finally we will explain what 'the polar wing ".

These mathematical descriptions and physical, so we can conclude on the role played by the characteristics of the wing on an airplane flight.

To access the bibliography of our TPE, you can go here: bibliography

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