Ion Wind Propulsion – Moving Air Without a Propeller

25.03.2025

Can air move without a fan or propeller? Two young researchers proved it’s possible with an invisible force!

Can you imagine generating airflow without using a fan or propeller? Two young researchers from Turkey have successfully built a device that does exactly that. Their project explores ion wind propulsion, a technology that moves air by electrically charging and accelerating molecules—without any moving parts.

How Does It Work?

The air around us is made up of molecules, primarily oxygen (O₂) and nitrogen (N₂). Under normal conditions, these molecules have a neutral charge, meaning they are neither positively nor negatively charged. However, when exposed to a strong electric field, they can become ionized, meaning they gain or lose electrons.

In their experiment, the students built a system with two key components:

1. An emitter – a high-voltage electrode that ionizes nearby air molecules.
2. A collector – a second electrode that attracts the charged molecules.

When the ionized molecules move toward the collector, they collide with neutral air molecules, transferring momentum and creating a steady airflow. This phenomenon is called ionic wind or electrohydrodynamic (EHD) propulsion.

Why Is This Important?

Ion wind propulsion could be an efficient and silent alternative to traditional engines. Unlike fans or turbines, it has no mechanical parts, reducing energy loss due to friction. It also requires no fuel, making it an eco-friendly option for lightweight aircraft, drones, or even future spacecraft.

For their impressive research, the students won first place in the Physics category along with a special innovation award. Their next challenge will be the upcoming national competition in Hamburg, where they will present their findings to an even larger audience.