PENGARUH MASSA HIDROXY TERMINATED POLYBUTADIENE (HTPB) TERHADAP BESARNYA PENGARUH VINIL DALAM MENINGKATKAN LAJU KENAIKAN VISKOSITAS DAN KEKERASAN BINDER PROPELAN PADAT KOMPOSIT (THE EFFECTS OF HIDROXY TERMINATED POLYBUTADIENE (HTPB)`S MASS ON THE MAGNITUDE OF VYNIL`S EFFECTS IN INCREASING COMPOSITE SOLID PROPELLANT BINDER`S RATE OF INCREASING OF VISCOSITY AND HARDNESS) - Afni Restasari (LAPAN, 2015)