Double base propellants composed of nitrocellulose (NC) and nitroglycerin (NG) have been used in rocket and gun applications since the late 1800s [1] . Such propellants offer several benefits over their more modern composite counterparts, including simple formulation, high modulus and strength, and chlorine-free minimum smoke exhaust products [2,3] . Nevertheless, double base propellants are pl...

Abstract This paper studies the influence of nozzle structure and process parameters on solid propellant 3D printing process, so as to better guide optimization improvement, realize continuous extrusion molding propellant. Four characteristic such diameter, shrinkage angle, temperature, wall slip coefficient are selected, these four speed pressure slurry in is discussed by using orthogonal test...

Sodium chloride or ammonia was dissolved in the water propellant of pulsed plasma thrusters to improve the performance. Pulsed plasma thrusters using liquid propellant utilize water as attractive alternative instead of Teflon. Water propellant enables the controlling propellant mass flow and leads high specific impulse. However, liquid propellant pulsed plasma thrusters have larger plasma resis...

Abstract In order to solve the problem of long time consuming and low efficiency in solving complex combustion surface solid rocket propellant, a calculation method based on parameterized volume Boolean operation was proposed. After model propellant created by using 3D modeling software, burning used perform difference between obtained growth entity entity. Through Sensitivity Analysis function...

To further investigate the fracture response in propellant grain, numerical methodology is proposed to cope with crack propagation simulation especially for mixed mode condition. The discrete scheme of linear viscoelastic constitutive model proposed, which provides a key means propagation. In order simulate cohesive traction distribution on new surface, extrinsic Park-Paulino-Roesler (PPR) zone...