Effects of AP content and granularity gradation on pressure exponent of boron-based fuel-rich propellant;

By means of coupled DSC-TG and burning rate measurement methods,some burning rate modifiers such as nano-PbO,QC,C,SEA,Fe2O3 and Co3O4 were selected to reduce the pressure exponent of CMDB propellant and AP composite propellant,moreover their effects on combustion properties of NEPE propellant were discussed.

In order to obtain the main factors affecting the pressure exponent of boron-based fuel-rich propellant,propellant samples were prepared via mix of the compositions in mixing machine,pouring in vacuum and curing at constant temperature.

Based on the research into the influence of the grain sizes and grain size stage matches of high energy solid propellants upon the burning rate and the pressure indexes, some suitable grain size stage match methods are given.

This paper indicates that the doping of Ca+ + can make the pressure exponant decline in the pressure preseeure of solid solid rocket, and even the negative pressure exponant appears in some pressure range(7-8.

Analysis and discrimination of the burning rate pressure exponent of AP-CMDB propellants;

Study on the Relationship between Compressive Strength Index of Femoral Neck and Hip Osteoporotic Fractures