Usually something that will burn hot and hard enough so that the expanding gasses will provide thrust enough to get the rocket airborne.
A liquid-fuel rocket or a liquid rocket is a rocket with an engine that uses propellants in liquid form.
The mixture ratio of rocket propellants refers to the ratio of oxidizer to fuel in a rocket engine. It is an important parameter that determines the performance and efficiency of the engine. The specific mixture ratio can vary depending on the type of propellants used and the design requirements of the rocket.
A hybrid rocket is the rocket with a rocket motor that uses propellants in two different states of matter; one liquid or gas and one solid.
A rocket is a vehicle that uses propellants to generate thrust for propulsion. The propellants are ignited in a combustion chamber, creating a high-pressure gas that is expelled through a nozzle at the rear of the rocket. This action creates a reaction force known as thrust, propelling the rocket forward.
Rocket engines typically use propellants that consist of a fuel and an oxidizer. Common fuels include liquid hydrogen, kerosene (RP-1), and solid rocket propellants, while oxidizers can include liquid oxygen or nitrogen tetroxide. The specific combination depends on the type of rocket and its intended mission. These propellants are essential for generating the thrust needed to propel the rocket into space.
R. W. Michel has written: 'Combustion performance and heat transfer characterization of LOX/hydrocarbon type propellants' -- subject(s): Space shuttles, Liquid oxygen, Oxygen-hydrocarbon rocket engines, Cryogenic rocket propellants
Robert H. Goddard is considered the first scientist to successfully launch a liquid-fueled rocket in 1926. He used a combination of liquid oxygen and gasoline as propellants in his rocket experiments.
The fuel inside a rocket can vary depending on the type of rocket. Common rocket fuels include liquid hydrogen, liquid oxygen, kerosene, and solid propellants like ammonium perchlorate. These fuels are used to generate the energy needed to propel the rocket into space.
It uses rocket fuel
Rockets are propelled into space using liquid or solid propellants. Liquid propellants typically consist of liquid oxygen or hydrogen as the oxidizer and a fuel such as liquid hydrogen or kerosene. Solid propellants are a mixture of fuel and oxidizer that are combined into a solid form.
A rocket hasn't a chemical equation; for a detailed discussion about propellants see the link below.
Rockets primarily use chemical energy stored in their propellants to generate thrust through the burning of fuel and oxidizer. The combustion of these propellants produces hot gases that are expelled out of the rocket nozzle, creating a reaction force that propels the rocket forward.