The effectiveness of multi-barrel rocket systems on today’s battlefields is strongly dependent on the reliability of operation and, hence, proper action of all components, especially rockets and propellants. Therefore, the properties of the solid rocket propellants used in the rocket motors must be determined with an efficient and reliable tool providing repeatable results. The article presents the results of a thermomechanical analysis of solid double-base rocket propellant used in multi-barrel rocket systems. One of the recommended methods for testing solid rocket propellants is dynamic mechanical analysis. Mechanical properties such as the dynamic storage modulus \((E^\prime )\), the dynamic loss modulus \((E^{\prime \prime }),\) and the tangent tan\((\delta )\) of the phase shift angle \((E^{\prime \prime }/E^\prime )\) were measured with the use of the TA Instruments DMA Q 800 device, in a temperature range of − 100 to \(+\)100 \(^\circ \) C with the use of different frequencies of applied force and heating rates. Special attention was devoted to determining the glass transition temperature following the STANAG 4540 standardization agreement, as well as the influence of testing parameters on the obtained experimental results. Dynamic mechanical analysis has proven to be an effective method for the evaluation of key properties influencing rocket motor behavior.

当今战场上多管火箭系统的有效性在很大程度上取决于操作的可靠性，因此取决于所有部件（尤其是火箭和推进剂）的正确作用。因此，必须使用有效且可靠的工具来确定火箭发动机中使用的固体火箭推进剂的性能，以提供可重复的结果。本文介绍了多管火箭系统中使用的固体双基火箭推进剂的热机械分析结果。测试固体火箭推进剂的推荐方法之一是动态力学​​分析。机械性能，例如动态储能模量\((E^\prime )\)、动态损耗模量\((E^{\prime \prime }),\)和正切 tan \((\delta )\)相移角\((E^{\prime \prime }/E^\prime )\)是使用 TA Instruments DMA Q 800 设备在 − 100 至\(+\ ) 100 \(^\circ \)  C，使用不同频率的施加力和加热速率。特别关注按照 STANAG 4540 标准化协议确定玻璃化转变温度，以及测试参数对获得的实验结果的影响。动态力学分析已被证明是评估影响火箭发动机行为的关键特性的有效方法。