Propellanteissa
Propellanteissa is a Finnish term referring to rocket propellants, the substances used to create thrust in a rocket engine. These propellants are typically stored in tanks and are expelled through a nozzle at high velocity. The expulsion of mass creates a reactive force that propels the rocket forward according to Newton's third law of motion.
There are two main categories of propellants: solid and liquid. Solid propellants are a premixed combination
Common liquid propellants include kerosene and liquid oxygen, or liquid hydrogen and liquid oxygen. Solid propellants