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La propulsion magnétique est un moyen de l … La propulsion magnétique est un moyen de locomotion qui utilise les propriétés magnétiques des électroaimants. Le train Maglev utilise cette technologie. Le concept de propulsion magnétique est relativement facile à mettre en œuvre : un noyau d'acier est placé au centre d'une bobine. Quand un est placé autour de ce noyau, puisqu'il ne peut être magnétisé, ses atomes s'agitent. Un courant électrique est alors produit - et donc un champ magnétique, et les électroaimants produisent un champ opposé. À cause de cette opposition, l'anneau est éjecté rapidement. Si le tore (ou l'anneau) ne peut s'échapper du champ magnétique, à cause du courant induit, il s'échauffe rapidement. C'est le principe des plaques à induction.C'est le principe des plaques à induction.
, Electromagnetic propulsion (EMP) is the pr … Electromagnetic propulsion (EMP) is the principle of accelerating an object by the utilization of a flowing electrical current and magnetic fields. The electrical current is used to either create an opposing magnetic field, or to charge a field, which can then be repelled. When a current flows through a conductor in a magnetic field, an electromagnetic force known as a Lorentz force, pushes the conductor in a direction perpendicular to the conductor and the magnetic field. This repulsing force is what causes propulsion in a system designed to take advantage of the phenomenon. The term electromagnetic propulsion (EMP) can be described by its individual components: electromagnetic – using electricity to create a magnetic field, and propulsion – the process of propelling something. When a fluid (liquid or gas) is employed as the moving conductor, the propulsion may be termed magnetohydrodynamic drive. One key difference between EMP and propulsion achieved by electric motors is that the electrical energy used for EMP is not used to produce rotational energy for motion; though both use magnetic fields and a flowing electrical current. The science of electromagnetic propulsion does not have origins with any one individual and has application in many different fields. The thought of using magnets for propulsion continues to this day and has been dreamed of since at least 1897 when John Munro published his fictional story "A Trip to Venus". Current applications can be seen in maglev trains and military railguns. Other applications that remain not widely used or still in development include ion thruster for low orbiting satellites and magnetohydrodynamic drive for ships and submarines.drodynamic drive for ships and submarines.
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| rdfs:comment |
Electromagnetic propulsion (EMP) is the pr … Electromagnetic propulsion (EMP) is the principle of accelerating an object by the utilization of a flowing electrical current and magnetic fields. The electrical current is used to either create an opposing magnetic field, or to charge a field, which can then be repelled. When a current flows through a conductor in a magnetic field, an electromagnetic force known as a Lorentz force, pushes the conductor in a direction perpendicular to the conductor and the magnetic field. This repulsing force is what causes propulsion in a system designed to take advantage of the phenomenon. The term electromagnetic propulsion (EMP) can be described by its individual components: electromagnetic – using electricity to create a magnetic field, and propulsion – the process of propelling something. When a flurocess of propelling something. When a flu
, La propulsion magnétique est un moyen de l … La propulsion magnétique est un moyen de locomotion qui utilise les propriétés magnétiques des électroaimants. Le train Maglev utilise cette technologie. Le concept de propulsion magnétique est relativement facile à mettre en œuvre : un noyau d'acier est placé au centre d'une bobine. Quand un est placé autour de ce noyau, puisqu'il ne peut être magnétisé, ses atomes s'agitent. Un courant électrique est alors produit - et donc un champ magnétique, et les électroaimants produisent un champ opposé. À cause de cette opposition, l'anneau est éjecté rapidement.pposition, l'anneau est éjecté rapidement.
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Electromagnetic propulsion
, Propulsion magnétique
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