标题： 零能旅行 显示英文标题

标题： Zero Energy Travel

摘要： 基于牛顿运动定律，理论上可以以零能耗进行旅行。 根据运动第一定律，一个物体将无限距离地继续运动，除非受到其他力的作用。 对于运动中的物体，阻止持续运动的力是摩擦力。 然而，在许多情况下摩擦力为零，例如在太空中，那里是真空。 在地球上，重力使物体相互接触并产生摩擦，但存在技术可以利用强大的磁力将它们分离在空气中。 在低速时，空气引起的摩擦很小，但我们可以在陆地上制造真空以实现高速旅行。 旅行的另一个条件是能够在目的地停止。 在陆地上，我们可以使用无刷永磁发电机将动能重新转化为电能。 这些发电机也可以将电能转化为动能以提供运动。 本文回顾了将使我们能够以零能耗旅行的技术。 在陆地上更容易实现，但在空气中则不明显。 显示英文摘要

摘要： It is fundamentally possible to travel with zero energy based on Newton Laws of Motion. According to the first law of motion, a body will continue to travel for infinite distance unless it is acted upon by another force. For a body in motion, the force which stops perpetual motion is friction. However, there are many circumstances that friction is zero, for example in space, where there is vacuum. On earth, gravity makes objects to be in constant contact with each other generating friction but technology exists to separate them in the air using powerful magnetic forces. At low speeds, the friction caused by air is minimal but we can create vacuum even on land for high speed travel. Another condition for travelling is for it to stop at its destination. On land, we can recover the kinetic energy back into electrical energy using brushless permanent magnet generators. These generators can also convert electric energy into kinetic energy in order to provide motion. This article reviews technologies that will allow us to travel with zero energy. It is easier to do it on land but in the air, it is not obvious.