【摘要】 把双基、改性双基、交联改性双基和NEPE推进剂等32个配方的高压差示扫描量热(PDSC)特征量△Sd与燃速u用经验方程u=ku[p△Sd]1/2进行了关联,其中:p为压强,△Sd=△Hd/(Te-To),△Hd为分解热,To为放热起始温度,Te为放热结束温度。在迄今PDSC试验能达到的压力范围内得到了满意的结果。获得的燃速与PDSC特征量相关因子ku能用以考核燃速催化剂的作用和推进剂组分的影响。更多还原

【Abstract】 The characteristic values of PDSC(high pressure differential scanning calorimetry) for 32 propellants,including DB,CMDB,XLDB and NEPE,were correlated with burning rates by an empiric formula u =ku1/2.For the formula,p is pressure,△Sd =△Hd/(Te-To),△Hd is decomposition heat,To and Te are onset and end temperatures of heat release on DSC curve,respectively.The results show that the good fittings of the formulas for all tested propellants appear in pressure range(≤7MPa) of PDSC so far.It is found that ku,correlation factor of burning rate with PDSC characteristic value,can be used to study the effect of burning catalysts and the influence of component on burning rate for the propellants.更多还原