Tschanz drive

The Tschanz drive is a way to propel a spacecraft without using any kind of propellant or fuel. Imagine you are playing with a toy car that moves forward when you push it from behind. The Tschanz drive works in a similar way, but instead of pushing the spacecraft from behind, it creates a special kind of waves that push the spacecraft forward.

To understand this better, imagine you are at the beach and the waves are coming towards you. As the waves hit your body, you might feel a slight push or pull. This is because the waves carry momentum with them. Now imagine if you could create waves that have a very specific shape and size, and then bounce them back and forth inside a metal container. These waves would generate a kind of "back and forth" motion that creates a net force in one direction. This is called resonance.

The Tschanz drive is essentially a device that creates these specially-shaped waves and then bounces them back and forth inside a metal container. The waves interact with the container and generate a force that pushes the container in one direction. This force is not very strong, but it is enough to move a spacecraft in space without using any propellant or fuel.

It's important to note that the Tschanz drive is still an experimental technology and has not been proven to work in space yet. Also, the forces involved are very small, so it would take a very long time for a spacecraft to gain any noticeable speed using this method. But scientists are still excited about the potential of this technology and are working to improve it.