There are mathematical calculations for a device that could reach a speed equal to 99% of the speed of light (300,000 Km / s) without having an engine.
The so-called Helical Engines work on the basis of how mass can change at speeds close to the speed of light.
We can imagine a weight that is inside a box and is attached to the box with two springs on two opposite sides. Then the weight will wiggle in the same line. This will make the box tremble. The box, however, will not change position but will stay in the same place since the forces on those opposite directions are equal but opposite.
But if the mass will increase, as it does at speeds approaching the speed of light, and this only happens when the mass moves in one of two directions, then there will be more impulse in that direction by pushing the box with greater force increasing its speed.
The theory is that objects increase their mass as they approach the speed of light.
However, the device will not have a weight but ions and will not be a box but a closed circuit. In this way the ions will move faster in one direction than in the opposite consequently pushing the circuit with greater force in that direction. This way there will be no engine in the device except ions moving in an electromagnetic field.
According to calculations, in practice such a device should be 200 meters in length and 12 meters in diameter.
Very impressive in theory but with several practical challenges. Of course all ambitions start this way.
[Source: http://www.thebrighterside.news]
