The surface properties of fillers(HMX,RDX and Al)with various particle size and nitrocellulose(NC)with various content of nitrogen,the interface properties between NC and fillers,and the effects of the surface and interface properties on mechanical properties of less smoke modified double-base propellant containing nitramine and aluminum were investigated.The results show that the surface tension of HMX,RDX and Al increase with the decrease in their particle size.The interface tension between NC and fillers...