👉 Sailless refers to a spacecraft or vehicle that has no propulsion system, such as a propeller, engine, or thruster. This means that the spacecraft is powered solely by its own internal combustion engines or nuclear power sources, and it does not rely on external sources of energy, like solar panels, batteries, or electrical grids. Sailless spacecraft are typically used for scientific research, exploration missions, or other missions where there is a need for a vehicle with limited fuel or power. They
