Oxygen can not be used as a rocket launch fuel, oxygen can only play the role of combustion.
Rockets using liquid propellant, the propellant in the combustion chamber combustion produces high temperature and high pressure gas, the gas through the nozzle, in which the adiabatic expansion and high-speed ejection, resulting in the combustion chamber (that is, on the rocket) of the huge reaction force and make the rocket forward flight.
Rocket propellant, solid and liquid two kinds. Solid propellant burning slower, burning time is also longer, applicable to the occasion does not require rapid launch. Liquid propellant has the use of single-component liquid oxygen/kerosene (referred to as LOX/RP-1) propellant and two-component liquid oxygen/liquid hydrogen (referred to as LOX/LH2) propellant.
The liquid-hydrogen-liquid-oxygen rocket propellant combination has a high specific impulse (290 seconds), but it is more costly and its cryogenic storage and transportation technology is more complex.RP-1 kerosene mixed with liquid oxygen can produce a specific impulse of about 330 seconds. So oxygen cannot be used as a fuel for rocket launches.
Oxygen Uses:
1, Breathing: Oxygen is a gas necessary for human respiration. In the air, the concentration of oxygen is about 21%, which is the percentage we need to breathe. If the concentration of oxygen in the air is too low, human beings will not be able to sustain life.
2, health care: Oxygen also has a wide range of applications in the field of health care. It is used to treat dyspnea, hypoxia and other breathing problems. Oxygen is a necessary medical equipment in hospitals and emergency vehicles.
3, industrial production: oxygen also plays an important role in industrial production. It is used in the production process of steel manufacturing, petrochemical, paper making, textile and other industries. In these industries, oxygen is used as an oxidizer, combustion aid and reactant, etc.
4, welding and cutting: oxygen also plays an important role in welding and cutting. It is mixed with fuel gases such as acetylene or propane to produce a high-temperature flame, which is used for welding and cutting of metal materials.
5, diving and alpine climbing: oxygen is also widely used in diving and alpine climbing and other sports activities. In these activities, people need to breathe high concentrations of oxygen to maintain normal physiological functions.
6, rocket propellant: Although oxygen can not be used as a rocket launch fuel, but it can be used as a rocket propellant in the oxidizer. In rocket propellant, liquid oxygen is mixed with liquid hydrogen or solid fuel to produce high-temperature, high-pressure gas to propel the rocket forward.