The Comptes Rendus Mécanique cover all fields of Mechanics: Dynamical Systems, Solid Mechanics, Fluid Mechanics, Acoustics, Wave Motion, Control Theory, Signal Processing, …The articles published are short, original notes describing briefly an important discovery, or a new theory. Since this is a monthly publication, significant results are published rapidly, generally two to three months after being accepted. Articles can be in either English or in French, with an abstract in both languages. An abridged version of the main text in the second language may also be included.