Optimum Disposition of Metal Particles in the Propellant Grain [PDF]
International Journal of Aerospace Engineering, 2014 Using the dispersed metal in solid propellants to increase the temperature of combustion products leads to such a problem as the specific impulse loss due to the incomplete combustion of metal particles in the exhaust products.
Leonid L. Minkov +2 more
doaj +2 more sources
Theoretical stress mechanism and structural integrity of viscoelastic propellant grains with variable Poisson’s ratio [PDF]
Scientific ReportsFor the propellant grain of solid rocket motors (SRMs) with circular inner surfaces, the generalized Maxwell model (GMM) and the generalized Kelvin–Voigt model (GKV) are used to characterize the relaxation properties of the grain’s elastic modulus and ...
Xueren Wang +5 more
doaj +2 more sources
Study on the Burning of Grain-molded Propellant
Energy Procedia, 2015 AbstractThe investigation of the burning of grain-molded propellant comprises progressive burning, ignition and internal ballistic property. The grain-molded propellant is extruded by high energy nitramine propellant in the professional mould. The grain-molded propellant was studied by closed-bomb test, ignition simulation equipment test and 30mm ...
Yao, Yue-Juan +5 more
exaly +2 more sources
Technique to Assess Aging of Propellant Grain
Chinese Journal of Aeronautics, 2006 AbstractPhysical properties of composite propellants used in solid rocket motors change significantly with age. To predict the margin of safety and to reevaluate the remaining service life, the structural integrity analysis of solid propellant grains of aged rocket motors is pa-formed at various stages of their life span.
MUHAMMAD, Majd-ud-din +2 more
exaly +2 more sources
Reverse design of solid propellant grain based on deep learning: Imaging internal ballistic data
Defence TechnologyThe reverse design of solid rocket motor (SRM) propellant grain involves determining the grain geometry to closely match a predefined internal ballistic curve. While existing reverse design methods are feasible, they often face challenges such as lengthy
Lin Sun +6 more
doaj +3 more sources
Position Normalization of Propellant Grain Point Clouds
AerospacePoint cloud data obtained from scanning propellant grains with 3D scanning equipment exhibit positional uncertainty in space, posing significant challenges for calculating the relevant parameters of the propellant grains.
Junchao Wang +5 more
doaj +2 more sources
Numerical Analysis of Curing Residual Stress and Strain in NEPE Propellant Grain [PDF]
Polymers, 2023 Xiangyang Liu +2 more
exaly +2 more sources
A numerical method for solid propellant grain design [PDF]
Scientific Technical Review, 2018 In this study, a grain burnback analysis for an Anchor solid propellant grain geometry for a rocket motor was done. The design process involves parametric modeling of the geometry in using PTC Creo software through dynamic variables that define the ...
Tanaskovski Bojan +3 more
doaj +2 more sources
Effect of Mechanical Heterogeneity on the Structural Integrity of HTPB Propellant Grain
Materials, 2023 To investigate the structural effects of the mechanical heterogeneity of Hydroxyl-terminated polybutadiene (HTPB) propellant grain under ignition pressurization, a gradient finite element method was proposed to evaluate its structural integrity. The heterogeneous mechanical properties of the propellant grain were constructed and assessed.
Xiangyang Liu, Dongmo Zhou
exaly +3 more sources
Structural Integrity Assessment of an NEPE Propellant Grain Considering the Tension–Compression Asymmetry in Its Mechanical Property [PDF]
Polymers, 2023 Dongmo Zhou
exaly +2 more sources