Omsk State Technical University spoke about an advanced development – an engine for spacecraft that runs on a mixture of water and alcohol (that is, in fact, on vodka.
«The alcohol-water mixture comes from the fuel tank to the automation elements and enters the microengine. It consists of a large number of gas channels and a heater. When voltage is applied, the microengine heats up, the fuel evaporates, the resulting steam overheats and creates thrust,» — Anton Lukyanchik, senior lecturer at the Department of Aircraft and Rocket Engineering of OmSTU, said about the development.
The scientist added that the engine design can be easily changed depending on the satellite's tasks, and the fuel system (tank and pipelines) can be completed for specific purposes. He also noted that scientists managed to increase reliability and reduce the weight and creation time of propulsion systems.
This engine is able to solve the main problem of small satellites – the impossibility of maneuvering. Such spacecraft are usually launched into low orbits, which are particularly subject to the Earth's gravity. Because of this, the satellite's lifespan is greatly reduced, as it gradually leaves its orbit. A compact engine solves this problem – it allows the satellite to adjust its position (independently or remotely).