130 mm Reduced Charges

Description

Single base seven perforated propellant cylindrical grain, category 9/7 contains Nitrocellulose (NC) and Diphenylamine (DPA).This propellant plus increments of one perforated tubular propellant type 12/1 – 72 is used as reduced charge for 130mm gun M-46 and type 59. TECHNICAL SPECIFICATIONSType of propellant9/712/1 – 72Length (mm)11.5 – 12.6690 -720Hole diameter (mm)0.4 – 0.62.4 -2.8Web thickness (mm)0.95 -1.101.1 – 1.25Total volatiles (%)≤ 4.5≤ 4.5External moisture (%)1.0 -1.81.0 -1.8Residual solvent (%)≥ 0.9≥ 1.2Stability at 134.5 °C (min)≥ 40≥ 40BALLISTIC SPECIFICATIONSCharge No.No.2No.3No.4Charge weight (approx.) for propellant type 9/7 (gr)570044503200Charge weight(approx.)for propellant type 12/1 – 72 (gr)700700700Average muzzle velocity (m/s)700-710615-625520-530Average max pressure at 15 °C (kg/cm2)≤ 2750-≥ 1100Std. dev. of Velocity (m/s)≤ 2.5≤ 2.5≤ 2.5