130 mm Reduced Charges
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 SPECIFICATIONS
Type of propellant | 9/7 | 12/1 – 72 |
Length (mm) | 11.5 - 12.6 | 690 -720 |
Hole diameter (mm) | 0.4 - 0.6 | 2.4 -2.8 |
Web thickness (mm) | 0.95 -1.10 | 1.1 - 1.25 |
Total volatiles (%) | ≤ 4.5 | ≤ 4.5 |
External moisture (%) | 1.0 -1.8 | 1.0 -1.8 |
Residual solvent (%) | ≥ 0.9 | ≥ 1.2 |
Stability at 134.5 °C (min) | ≥ 40 | ≥ 40 |
BALLISTIC SPECIFICATIONS
Charge No. | No.2 | No.3 | No.4 |
Charge weight (approx.) for propellant type 9/7 (gr) | 5700 | 4450 | 3200 |
Charge weight(approx.)for propellant type 12/1 – 72 (gr) | 700 | 700 | 700 |
Average muzzle velocity (m/s) | 700-710 | 615-625 | 520-530 |
Average max pressure at 15 °C (kg/cm2) | ≤ 2750 | - | ≥ 1100 |
Std. dev. of Velocity (m/s) | ≤ 2.5 | ≤ 2.5 | ≤ 2.5 |
| Attachment | Size |
|---|---|
| chapter 1-5_20.pdf | 455.28 KB |
