A kind of high endothermic fuel for hypersonic aircraft and its preparation method

Abstract

The invention discloses high-heat-absorption fuel for a hypersonic-velocity aircraft and a preparation method and belongs to the field of fuel for aircrafts. The high-heat-absorption fuel is preparedfrom heat-absorption liquid hydrocarbon fuel and metal hydride. The high-heat-absorption fuel is prepared from components in percentage by mass as follows: 55%-86% of heat-absorption liquid hydrocarbon fuel, 12%-40% of metal hydride, 0-5% of a surfactant and 0-2% of other functional additives. The prepared high-heat-absorption fuel has high density Rho larger than or equal to 0.780 g / cm<3> at thetemperature of 20 DEG C, high heat sink value (the effective heat sink value higher than 5.0 MJ / kg at the temperature of 750 DEG C), little high temperature pyrolysis coking amount, high heat value larger than or equal to 35 MJ / Kg and short ignition delay time and can realize rapid organization combustion in a scramjet engine, so that the flight Mach number of a weapon is higher.

Description

technical field [0001] The invention belongs to fuel for hypersonic aircraft. It specifically relates to an endothermic fuel for an actively cooled scramjet engine of a hypersonic aircraft, which belongs to the field of aircraft fuel. Background technique [0002] Hypersonic speed refers to the flight speed greater than 5Ma. Compared with active missiles, hypersonic missiles have the following advantages: rapid strike capability, strong penetration capability, long-range precision strike capability, and powerful target damage capability. Hypersonic weapons are more powerful than existing non-nuclear weapons, and can perform a variety of combat tasks (such as attacking time-sensitive targets, destroying deep underground targets, etc.), and have the same damage effect as nuclear weapons, but they are more flexible than nuclear weapons. Operational Application and Credibility. The emergence of this weapon system with a strategic deterrent effect has enabled conventional weapo...

AI Technical Summary

Problems solved by technology

[0006] Compared with liquid hydrogen, endothermic hydrocarbon fuel has the advantages of easy storage, portability, and practical application, but its cooling capacity is limited, and it is easy to coke at high temperatures, which affects the normal operation of the engine. At the same time, its chemical reaction speed is slow (compared to Hydrogen is 3∼5 orders of magnitude slower), and the calorific value is low (the calorific value per unit mass is only 1 / 3 of that of hydrogen)

The main performance is that the effective heat sink value of fuel cannot meet the thermal management requirements of high Mach number aircraft, the ignition and combustion performance of fuel needs to be improved, and the application of fuel engineering is difficult