GAP/NC交联改性双基推进剂能量及烟雾特性计算研究

利用推进剂能量特性计算程序,计算了以聚叠氮缩水甘油醚(GAP)改性单基球形药为粘合剂的GAP/硝化棉(NC)交联改性双基推进剂的能量性能。以燃烧产物中Al_2O_3、HCl的含量评价其烟雾特性。结果表明,随着增塑剂端叠氮基聚叠氮缩水甘油醚(GAPA)含量的增大,理论比冲先增加后降低。随着粘合剂中GAP含量的增加,理论比冲降低,燃烧温度降低;而且增塑比越小,降低的幅度越大。GAPA含量和GAP含量对推进剂的烟雾特性影响不大。采用4,4'-二硝基-3,3'偶氮氧化呋咱(DNAF)取代AP后,在固体含量为60%,推进剂理论比冲在2600 N·s·kg~(-1)时,其燃烧产物与AP配方相比,N_2含量增加了44%,Al_2O_3含量下降了67%,HCl含量降为0,说明GAP/NC推进剂是一种具有高能量、低特征信号的重要推进剂。

Energy and Smoke Signature of GAP/NC Cross-linked Propellant

The energy performances of glycidyl azide polymer (GAP)/ nitrocellulose(NC) cross-linked modified double-base propellant, in which GAP modified nitrocellulose powders was used as binder, were calculated by a propellant energy characteristic calculation program. The smoke signature of the propellant was evaluated by the content of Al₂O₃ and HCl in combustion products. Results show that with increasing the content of plasticizer glycidyl azide polymer azide (GAPA), the theory specific impulse increases first and then decreases. With increasing the content of GAP in binder, the theory specific impulse decreases and combustion temperature decreases. And the smaller the plasticizing ratio is, the larger the decreasing amplitude will be. The content of GAPA and GAP has little effect on the smoke signature of the propellant. Replaced ammonium perchlorate (AP) with 4, 4-dinitro-3, 3-diazenofuroxan(DNAF), when the content of solids is 60%, and the theory specific impulse is 2600 N·s·kg^-1, compared with the combustion products of AP formulation, the combustion products of GAP/NC propellant don''t contain HCl, while the content of N₂ increases by 44% and the content of Al₂O₃ decreases by 67%, indicating that GAP/NC propellant is a prominent propellant with high energy and low characteristic signal.