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Researchers continue attempts to increase the specific impulse of rocket fuels used in space flight practice.1 The most commonly used types of oxidizing agents for rocket fuel have the following characteristics (Table1).2 The best characteristics among the most common and inexpensive fuels has liquid oxygen-kerosene.3 Due to its low boiling temperature it should be cryogenically stored, which poses an engineering challenge. However, in addition to very low boiling point, liquid oxygen also has rather low density. Low density causes to increase in the capacity and mass of oxidizer tanks that decrease in payload proportion in the rocket starting mass.

Prospects for use of O4 as rocket fuel oxidizer