Experimental Research on Atomization Characteristics of Gelled Propellants Doped with Carbon Particles

doi:10.3969/j.issn.1000-1093.2018.01.008

Abstract

Abstract: As an important part of gelled propellant, the solid energetic particles play an important role in improving its energy characteristics. Atomization is one of the key problems in gel propulsion technology. For the research on the influence of addition of solid energetic particles on the atomization of gelled propellants, the carbon particles are used as solid additives to investigate the atomization of gelled propellants doped with carbon partilces. Three kinds of gelled propellant simulants with carbon particles were prepared, and their rheological and thixotropic properties were measured. The characteristics and formation mechanism of atomization field under different jet velocities and impact angles are analyzed, the influences of the jet velocity on the atomization mode and the impact angle on the basic shape of atomization field are discussed, and the influences of the mass fraction and average particle size of carbon particles on the rheological characteristics and atomization effect are studied. A method for calculating the velocity of atomization field based on the scale invariant feature transform (SIFT) key points is proposed, and the atomization field velocity is analyzed quantitatively. On this basis, a new method is proposed to estimate the thickness of liquid film. The results show that the atomization effect improves significantly with the increase in jet velocity and impact angle; the addition of carbon particles has an important influence on the atomization, the atomization effect can be weakened as the mass fraction of carbon particles increases, and slightly improved as the average radius of carbon particles increases; the ratio of atomization average velocity to jet velocity, v_a/v_j, can be used to characterize the atomization effect, and the smaller the v_a/v_j is, the better the atomization effect is. Key

Key words: gelledpropellant, carbonparticle, atomizationcharacteristic, experimentalresearch

CLC Number:

V511⁺.4

SHI Chao， QIANG Hong-fu， LIU Hu. Experimental Research on Atomization Characteristics of Gelled Propellants Doped with Carbon Particles[J]. Acta Armamentarii, 2018, 39(1): 71-82.

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第39卷
第1期2018 年1月兵工学报ACTA ARMAMENTARIIVol.39No.1Jan.2018

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