Tuesday, 28 March 2017

OSA-76

"Lightened 76 mm SPG OSA-76

Factory #38 designed a draft project of a lightened 76 mm SPG (factory designation OSA-76) with a ZIS-3 gun on their own initiative.

The draft project was presented to the GBTU USA for review.

Experimental prototypes of the SPG are being build.

Brief tactical-technical characteristics of the OSA-76:
  1. Mass: 3400 kg
  2. Armour:
    1. Front: 6 mm
    2. Sides: 4 mm
  3. Engine power (four cylinder engine): 50 hp
  4. Range: 250 km
  5. Dimensions:
    1. Length (with barrel): 4800 mm
    2. Width: 2050 mm
    3. Height: 1560 mm
  6. Bore axis height: 1050 mm
  7. Top speed: 35 kph
  8. Armour piercing shell muzzle velocity: 662 m/s
  9. Armour piercing shell mass: 6.5 kg
  10. Vertical range: -5° to +12°
  11. Horizontal range: +/- 10°
  12. Ammunition carried: 30 shells
  13. Crew: driver, gunner, loader
  14. Sight: mechanical, with Hertz panorama
The armour has three variants:
  1. First:
    1. Front: 6 mm
    2. Sides: 4 mm
  2. Second (combat mass 3700 kg):
    1. Front: 10 mm
    2. Sides: 10 mm
  3. Third (combat mass 3800 kg):
    1. Front: 15 mm
    2. Sides: 10 mm"

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