In order to explore the ignition feasibility of aluminum-containing hydrogen peroxide gel in engines,the ignition process of aluminum-containing hydrogen peroxide gel was carried out.The ignition method was determined through ignition tests,the ignition model of the aluminum-containing hydrogen peroxide gel propellant was constructed based on theoretical a-nalysis,and a method for calculating the ignition delay time of the propellant was proposed.The influencing factors of the igni-tion delay time were explored,and the propellant ignition delay time was predicted.The results show that the flame ignition is a feasible ignition method.The liquid droplet diameter,aluminum particle diameter,ambient temperature,aluminum content and hydrogen peroxide concentration have a certain impact on the ignition delay time,among which the diameter of droplet and aluminum particles have the most significant impact.The ignition delay time is proportional to the diameter of the liquid droplets and aluminum particles.Propellants with atomized droplet diameters below 0.5mm and aluminum particle diameters less than 10μm are suitable for rocket engines.
physical chemistryaluminum particlehydrogen peroxidegel propellantignition delay timeignition model
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