Carborane plasticized boron-containing fuel-rich propellant

Abstract

The invention discloses a carborane plasticized boron-containing fuel-rich propellant, the propellant takes a carborane derivative with weak polarity as a plasticizer and boron powder as a fuel, and the carborane plasticizer has a rigid boron cage structure with high calorific value characteristic, a flexible alkane chain structure and a fluoride structure containing boron powder combustion efficiency. The propellant has good compatibility with components of the propellant, does not sublimate or migrate, improves the processing property of the propellant, improves the energy performance and combustion performance of the propellant, reduces the generation of condensed phases, and improves the service life of the propellant. The technical requirements of the solid ramjet engine for high calorific value, excellent ignition performance, high combustion efficiency, low condensed phase, clean fuel gas and low residue of the propellant are met, and a solid foundation is laid for solving the power source requirement problem of the solid ramjet engine.

Description

technical field [0001] The invention relates to the technical field of propellants for solid ramjet engines, in particular to a carborane-plasticized boron-containing fuel-rich propellant. Background technique [0002] The solid rocket ramjet uses solid fuel-rich propellant as the power source, and the fuel content reaches 30-50%. Therefore, fuel performance is one of the key factors that determine whether the potential excellent performance of the solid rocket ramjet can be fully exerted. Boron-rich fuel propulsion The propellant has a high calorific value and is the preferred propellant for solid impulse engines. [0003] However, the melting point and boiling point of boron powder are higher, it is difficult to melt and gasify, the ignition temperature is higher (1900K), and boron oxide (B) with strong viscosity is produced during the combustion of boron powder 2 o 3 ) covering the surface of the boron powder, making it difficult to ignite and fully burn the boron powde...

AI Technical Summary

Problems solved by technology

Therefore, plasticized carborane derivatives suitable for hydrocarbon-rich fuel propellants cannot be directly used in boron-containing fuel-rich propellants

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