Burning Characteristics of Ammonium-Nitrate-Based Composite Propellants with a Hydroxyl-Terminated Polybutadiene/Polytetrahydrofuran Blend Binder

Table 3

Theoretical values of 𝐼_sp and 𝑇_𝑓.

Propellant	AN/HTPB/PTHF1		AN/HTPB/PTHF2		AN/HTPB/PTHF3
AN content (%)	70	80	70	80	70	80
ξ (—)	𝐼sp (s)
0	189	198	189	198	189	198
0.2	190	199	189	199	189	199
0.4	190	201	190	200	190	200
0.6	191	202	191	201	191	201
0.8	192	203	191	203	191	202
ξ (—)	𝑇𝑓 (K)
0	1186	1353	1186	1353	1186	1353
0.2	1194	1403	1191	1393	1190	1388
0.4	1200	1456	1197	1438	1195	1429
0.6	1208	1507	1203	1485	1200	1473
0.8	1217	1553	1210	1531	1207	1518