Abstract: The present invention provides a high-energy-density slurry fuel, a preparation method, and an application. The high-energy-density slurry fuel comprises the following components in percentage by mass: 3%-40% of aluminum-based-metal hydride composite fuel; 53.6%-96% of high-density liquid hydrocarbon fuel; 0.2%-2% of anti-settling agent; and 0.2%-5% of other performance regulators, wherein an aluminum-based-metal hydride is a composite material that disperses and distributes a metal hydride inside aluminum powder particles. The high-energy-density slurry fuel may be used as a fuel for an engine such as a ramjet engine or a rocket engine. Compared with the existing liquid fuel, the present high-energy-density slurry fuel has the characteristics of high density (?20° C.>0.

Abstract: The present invention provides a high-energy-density slurry fuel, a preparation method, and an application. The high-energy-density slurry fuel comprises the following components in percentage by mass: 3%-40% of aluminum-based-metal hydride composite fuel; 53.6%-96% of high-density liquid hydrocarbon fuel; 0.2%-2% of anti-settling agent; and 0.2%-5% of other performance regulators, wherein an aluminum-based-metal hydride is a composite material that disperses and distributes a metal hydride inside aluminum powder particles. The high-energy-density slurry fuel may be used as a fuel for an engine such as a ramjet engine or a rocket engine. Compared with the existing liquid fuel, the present high-energy-density slurry fuel has the characteristics of high density (?20° C.>0.

Abstract: Disclosed in the present invention is a thermoplastic composite solid propellant, which comprises, by mass: 5-16% of a thermoplastic elastomer having a bonding function; 5-25% of a plasticizer; 5-18% of a metal fuel; 50-70% of an oxidizing agent; and 0.4-5% of a functional auxiliary agent. In the thermoplastic composite solid propellant, a thermoplastic elastomer grafted or copolymerized with a bonding functional group is used as an adhesive, and an adhesive matrix and a solid filler have relatively strong interaction, such that an interfacial effect is enhanced, and the phenomenon of “dehumidification” in the tensile failure process can be slowed down. Further disclosed is a method for preparing the thermoplastic composite solid propellant. The method overcomes defects in the prior art, safely and efficiently prepares the thermoplastic composite solid propellant in an acoustic resonance mixing manner, and meets the requirements of a solid engine for rapid charging.