The application provides a normal-temperature aluminum water
metal fuel
propellant and a preparation method thereof, and belongs to the technical field of
solid propellants. The application uses aluminum
powder as fuel, which can save the cost of
propellant and improve the energy characteristics of the
propellant. The application uses
aluminum hydride as a fuel additive, which increases the
hydrogen content in the fuel, reduces the
flame temperature of the propellant, and improves the
specific impulse of the propellant. The application uses
perchlorate and
sodium sulfate hydrate as an
oxidizing agent. The
sodium sulfate hydrate stores water in the form of
crystal water in the propellant, which overcomes the
disadvantage that the aluminum / ice propellant needs to be stored at low temperature. Under normal temperature conditions, the
sodium sulfate hydrate has good stability and is not easy to decompose or lose
crystal water, thereby prolonging the service life of the propellant. In the
combustion process, the
sodium sulfate hydrate can be dehydrated to provide an
oxidizing agent for the propellant and can be decomposed to generate a working medium, thereby improving the
specific impulse of the propellant.