The propellant containing an organic potassium salt (symbolized by KD) maintains the flame structure characteristics of plateau double base propellant, but the propellant containing K 3AlF 6 possesses completely different flame structure.
Especially the difference is more obvious in the experiments of the high temperature. But the result is same as the "171" propellant around 100 centigrade. The article test the chemical stability through the different method and estimate the safety store age is more than 15 years of the new modified double-base propellant.
The influence of the nitrogen contents of nitrocellulose,liquid energetic plasticizers DDXZ and NG,and solid plasticizer P on the dynamic mechanical properties of double base propellants was investigated by the dynamic mechanical analysis method.
At TNO-PML a mastercurve of a double base propellant was constituted using dynamical mechanical analysis (DMA) and compared with a mastercurve reduced from conventional (static) stress relaxation tests.
The mechanical properties of this double base propellant determined by DMA were compared with conventional (quasi-static) tensile test results.
Figure 2 containstypical double base propellant burn rates which are comparedto AP and HMX monopropellant burning rates.
However, a double base propellant with an energy level equivalentto HMX will have a slightly higher rate than HMX.
The energy release has been measured for double base propellant, but measurements for AP or HMX are not available.
The linear expansions of two materials have been measured, a double-base propellant and a carboxyl-terminated polybutadiene.
Thermal decomposition studies on double-base propellant compositions
Thermal reactivity studies were carried out in the temperature range 100-160? on two double-base propellant compositions which differ significantly in chemical composition, calorimetric value and ballistic characteristics.
The thermal decompositions of a double-base propellant (DB), five triple-base propellants (TB) and nitroguanidine (NGV) were examined.
In the multi-component systems, DATH undergoes a strong interaction with the binder of the double-base propellant and a weak interaction with RDX.