Preparation of cast double-propellant grains depends on the ability of nitrocellulose powder to swell and coalesce into a coherent mass when treated with a suitable solvent .The cast double-base process has been developed into a highly versatile technique for manufacturing solid rocket charges .Propellants manufactured by this process provide a wide range of energies and burning rates .Successful preparation of cast double-base propellant grains has been performed using compatible casting liquid with the casting powder .BuNENA was used as an energetic plastici-zer for manufacturing of casting powder .Burning rate measurements have been performed using closed bomb SV-2 to investigate the burning behavior along a wide range of operating pressure .Plateau burning had been detected in pressure range (50 - 70) × 105 Pa for the composition included BuNENA .DTA and TGA thermal analysis were con-ducted to evaluate the thermal behavior of the prepared cast double-base propellants .Results from DTA were used to calculate the apparent activation energy .