Journal of Solid Rocket Technology 

About: Journal of Solid Rocket Technology is an academic journal. The journal publishes majorly in the area(s): Propellant & Solid-fuel rocket. Over the lifetime, 554 publications have been published receiving 991 citations.

Effects of coating agents on the ignition and combustion of boron particles

Abstract: Boron is an attractive candidate for the development of high-energy fuels.It is important to find ways for promoting ignition and combustion property of boron particles.In this paper,AP,LiF and TMP were used for boron surface coating.Then ignition and combustion behavior of original boron and coated boron were studied by using thermogravimetry coupled with differential scanning calorimetry(TG-DCS) and laser ignition test bench.Results show that the thermal reaction of boron in the air can be divided into three stages:warm-up period,violent reaction period and later reaction period.LiF and TMP can reduce the ignition temperature and increase heat release of the boron samples.AP can slightly raise the ignition temperature and decrease the boron heat release.During laser ignition test,AP can shorten the ignition delay time and improve the combustion intensity.On the other side,LiF and TMP can increase the ignition delay time and lower combustion intensity a little,because they absorb part of the energy from the laser.

Coating of boron particles and combustion residue analysis of boron-based solid propellants

Abstract: Boron particles were coated by using different coating agents,and the effects of different agents on boron powderwere investigated by means of transmission electron microscope(TEM)and acidity-instrument.Then combustion residue of boron-based propellants was analyzed by chemical analysis methods.The results show that a coating layer forms on the surface of coatedboron particles,and the pHvalue of the solution with boron becomes obviously bigger,which would be suitable for pharmaceuticalprocess of boron-based propellants.The burning efficiency of coated boron powder was improved greatly.

Carbonized layer structural features and it's influence on ablation characteristic of EPDM insulator

Abstract: The investigation of carbonized layer structural features and its influence on ablation characteristic of EPDM insulator was carried out under different ablation modes through the ablation test motor,densimeter,scanning electron microscope and micron CT.The results show that the carbonized layer was a typical porous and loose material and a majority of the aperture was opened;Compact/loose structures were formed in carbonized layer of EPDM insulator,which was related with ablation conditions;The erosion resistance of ablatives was improved by the compact structures on the surface.The formation mechanism of compact structures was discussed and a possible cause is that chemical vapor deposition of pyrogenation gas at the specifical temperature.Three typical ablation modes of weak erosion mode,aggradation mode and strong erosion mode were assumed according to the carbonized layer structural features.The conclusion that the erosion resistance of ablatives was improved by the fiber frame could be drawed through the ablation experimental results of different formulation EPDM.

Analysis on nozzle structure integrality of solid rocket motors

Abstract: Structure integrality of nozzle during the working process of motor was analyzed by calculating temperature field and stress field.In order to determine temperature and pressure on nozzle inner contour,the gas was regarded as one-dimension isoentropic flow.Based on three-dimension finite element model,transient temperature field in nozzle was calculated.Then analysis results were input into structure model and point-point contact elements were used to simulate contact state of different nozzle materials.Under the temperature and working pressure loading,stress field of nozzle was analyzed.The results show that nozzle structure is of safety.

A review of solid propellant binder HTPE development and its molecular design philosophy

Abstract: The progress of solid propellant binder HTPE development and its applications in some advanced programs is introduced,and also the chemical environment in which the binder was developed and some forefront issues involved are analyzedEspecially,the application features of HTPE binder for high-pressure operation and insensitive munitions needs,and its research significance are reviewedThe object is aimed to investigate the developing needs and paths,from which a developing strategy is further outlined for solid propellant bindersTherefore,while the developing philosophy of HTPE binder is primarily summarized,the molecular modifications of other binders developed by foreign researchers,such as HTPB,GAP,etcare cited to demonstrate the feasibility of the block copolymer modifications of the binder