Recent progress in the synthesis and modification of green oxidizers and their application in solid rocket propellant formulations during these last few decades are reviewed.

Investigations of the detonation characteristics of new aluminum‐enriched RDX‐based composites belonging to the enhanced blast explosive formulations were undertaken. Firstly, the explosion heat was measured in a calorimetric bomb filled with argon and after the cylinder expansion test was performed. From the cylinder test data the wall velocity, the Gurney energy and the detonation energy of the composites were determined. Then, using simulations, the isentrope exponents of the composite detonation products were estimated and hence the detonation pressures were calculated. Finally the equation of state of the detonation products was determined for each composite from the calorimetric heat and from the cylinder test data. The investigation results are presented and discussed. The effect of the aluminum particle size on the detonation characteristics is also checked. Conclusions about how to use these composite in weapon systems to generate optimal effects are drawn.

1Introduction Abstract:T he review of the available literatureo nt hermobaric explosives and enhancedb last explosives (high-destructive explosives) is donei nt he paper.T hese types of explosives are defined, their common features and differences are shown.Special attention is paid to the physical phenomena accompanyingt he process of explosion of such fuel-enriched heterogeneous explosives. These materials are divided into liquid and solid mixtures and composite materials, including layeredc harges. The considered explosives are characterized in details, methodso fd etermination of their blast parameters are discusseda nd the results of experimental tests are presented.

Abstract:In the present work, the confined explosions of cylindrical homogeneous and layered charges composed of two different types of macroscopic granular multi-component RDX-based composites were investigated. These composites were obtained by the so-called "wet slurry method". For comparison, charges consisting of simple mixtures instead of the composites, TNT and phlegmatized RDX (RDXph) were also studied. The effect of the following parameters: the structure of the macroscopic granular composite, the type of charge (cylindrical pressed material or layered with an RDXph core), oxygen availability (air or argon atmosphere) and the aluminium particle size, on the quasi-static pressure (QSP) measured inside a 150 dm 3 explosion chamber was determined. Solid postdetonation residues from inside the explosion chamber were also collected and analyzed. A combination of all of these results enabled very important conclusions about aluminium combustion and behaviour during the explosion of composite and layered charges, to be drawn.