Abstract In order to design a solid rocket motor with high mass ratio, it is necessary find out the parameters of grain shape meet structural strength under volume loading fraction condition. A rapid optimization method for complex motors based on parametric modeling and GA-BP proposed. Based this, neural network prediction results are optimized as function fitness in GA, show that maximum Von ...

Development of the next generation of space flight vehicles has prompted a renewed focus on sound source characterization and near-field propagation modeling. Without advancements in these areas, large uncertainties in vibroacoustic loading estimates on space vehicles and payloads may result in structural designs that are either insufficient or excessive. Improved measurements in an extreme env...

Abstract Conducting thermal safety research on solid rocket motors is a method to effectively improve the battlefield survivability of rockets and missile weapons. Based AP-based cock-off reaction mechanism, 2-D unsteady axial symmetrical model motor developed. The software Fluent used calculate numerical value under stimulation conditions different heating rates. results indicate that rate coo...

Abstract Burning surface calculation is an important item in solid rocket engine design. In order to accurately calculate the parameters such as burning change law combustion chamber, level set based method used for calculation, firstly, complex divided into a uniform grid by voxelization; then distance transformation signed function, and finally information of contour obtained generate curve. ...

successful development, evaluation, and qualification of propulsion systems such as turbojet and turbofan engines and rocket motors require the measurement of the performance and reliability of these systems. thrust stands or testers are instruments for solid and liquid motors test. in this paper, a method for calculating of solid motors random vibrations effects on a thrust stand structure is ...