section_path: Fuels and oxidizers/Oxidizers
section_name: Oxidizers
paragraph_text: Oxidizers
  
  Since air is plentiful at the surface of the earth, the oxidizer is typically atmospheric oxygen, which has the advantage of not being stored within the vehicle. This increases the power-to-weight and power-to-volume ratios. Other materials are used for special purposes, often to increase power output or to allow operation under water or in space.