76-mm Battalion Mountain Howitzer 35-k Technical Details
- Years of issue – 1933 – 1937
- In total, 12 units were produced.
- Caliber – 76.2 mm
- Weight in firing position – 344 kg
- Barrel length – 870 mm
- The length of the threaded part – 645 mm
- Calculation – 5 people
- Travel speed – 6 – 7 km / h
- Rate of fire – 10 – 12 rds / min
- Greatest firing range – no data
- Direct shot range – no data
- Shooting angles:
- Horizontal – 3 ° + 4 °
- Vertical – 10 ° + 83 °
76-mm Battalion Mountain Howitzer 35-k Details
In 1933, the Revolutionary Military Council of the USSR approved a new artillery armament system for 1933-1937, which also included a 76-mm mortar gun designed to arm rifle battalions. The 76-mm mortar gun was supposed to have a mass of 140-150 kg, a firing range of 5-7 km and a rate of fire of 15-20 rounds per minute. First of all, artillery units of mountain rifle units needed such a weapon, since the unsatisfactory fitness of the standard 76-mm mountain guns of the 1909 model for transportation by packs was the main reason for their replacement.
The well-known Soviet designer V.N. Sidorenko, who headed the design bureau of the plant No. 8 named after Kalinin (Podlipki village, Moscow region). It was intended for mountain and airborne units, as well as a battalion weapon for direct support of the infantry. In 1935 V.N. Sidorenko completed the design of a 76-mm battalion mountain howitzer, indexed “35-K”, and on May 9, 1936, Plant No. 8 delivered its first prototype to the military representative.
In accordance with the tactical and technical requirements, the 35-K howitzer was disassembled into nine parts weighing from 35 to 38 kg. The howitzer consisted of a barrel with a piston eccentric breechblock and a two-wheeled single-bar box carriage with large wheels. The collapsible barrel of the howitzer consisted of a pipe, breech and lining. The breech was easily screwed onto the pipe by hand. The steepness of the rifling was constant. The lifting mechanism had one sector. The rotation of the gun occurred when the machine was moved along the combat axis. Rollback brake – hydraulic spindle type. Spring knurler. The single-bar carriage was disassembled into the frontal and trunk parts.
When firing from a trench, the trunk part was removed. The height of the line of fire was 750 mm on the high axis and 570 mm on the low axis. The sight was borrowed from the 76-mm mountain gun of the 1909 model. After the changes made, the gun allowed firing with a vertical firing angle of up to + 80 °. The shield is removable and folding. The combat axle is cranked. The originality of the design of this gun was that – by rotating the axis, it was possible to change the height of the line of fire: 570 mm and 750 mm. Wheels – metal disc wheels with a load. The front of the system is shallow, intended only for horse traction.
The gun could move on wheels in a shaft harness with one horse or four crew numbers, as well as in packs – four horse or nine human (without ammunition). The first tests took place in the summer of 1936.
By the beginning of 1937, 12 units of 76-mm mountain howitzers 35K were manufactured at the plant number 8. However, by this time, busy with the manufacture of other artillery systems, the plant was not able to continue work on fine-tuning the design of this howitzer. In the same year, all work on the 35-K howitzer was transferred from plant number 8 to plant number 7 named after. Frunze (Leningrad), who received an order for the manufacture of 100 35-K howitzers in 1937.
The 35-K howitzer passed field tests at the Scientific Artillery Test Range five times, and each time was unsuccessful. The result was the complete cessation of work on this topic in 1939.