We have already told about the predecessor of the heroine of our story, 76-mm mountain cannon of the 1938 model of the year.
Stories about weapons. 76-mm mountain gun 1938 model of the year
Today we will talk about the next generation.
The 76-mm 1938 model mountain cannon very well established itself in the fields (more precisely, the mountains) of the battles of World War II. However, time took its toll, and after 30 years of service the guns in our army, it was decided to replace. And the development of a newer and more perfect weapons.
The new weapon also had to operate in mountain conditions, as well as on rough and difficult terrain. In addition, the gun should be as light as possible. There was another lobby here, from comrade Margelov, who reformatted the Airborne Forces in 50's and tried to provide paratroopers with everything he could reach.
The experience of previous developments was taken into account, therefore it is quite natural that the gun was designed in SKB-172 under the guidance of M.Yu. Tsirulnikova.
And began to be produced in Perm, on the "Motovilikha", plant number 172, under the symbol M-99.
Officially, the M-99 cannon was adopted by the Soviet Army in the year 1958 under the designation "76-mm mountain gun of GP". Just at the same time, a new indexation of the barrel artillery systems is being introduced in the Department of Defense of the Ministry of Defense, and the M-99 cannon receives a new index “product 2А2”.
The gun has a collapsible barrel, which consists of a pipe, breech and casing. The breech and the pipe, connecting with each other in rifled sectors, fasten the casing. The inside of the barrel and the ballistics are identical to the 76-mm mountain cannon of the 1938 model of the year.
The shutter is horizontal wedge, with semi-automatic spring-type, not dependent on the speed of the run-up (opening is made by opening the spring, and closing - closing spring). The wheel chock is placed in the cradle under the barrel. Rollback hydraulic brake, spindle type, with spring compressor. Knuckle hydropneumatic. When fired, the recoil devices roll back along with the barrel. The lifting mechanism has one sector, the turning mechanism is of screw type.
The balancing mechanism is spring, pulling type, mounted on the upper machine, where lifting and turning mechanisms are also assembled, providing a vertical firing angle from -10 ° to + 70 ° and horizontal - to 45 °. The upper machine is connected to the lower machine with a pin. Box-type sliding beds, can be folded and disassembled into two parts. In the pivot on the front of the right frame there is an auxiliary (front) small diameter roller for moving the weapon on the battlefield. An integral part of the upper machine is also a two-piece light shield cover. It protects the calculation from small arms bullets and fragments of artillery shells and mines of small caliber.
To reduce the weight of the gun shield cover can be removed. Metal wheels odnoskatnye from the car "Moskvich" with a tire "gusmatik." Suspension - torsion type.
The gun is equipped with GWP or GWP-70 sights. The peculiarity of this gun is that it can conduct both flat and hinged shooting. To ensure high stability of the gun at high elevation angles, the design of the bottom mast machine allows you to change the height of the line of fire from 650 mm - at an elevation angle of less than 30 ° to 850 mm - at an elevation angle of more than 30 °.
Here you can see something in common with the mortar "Cornflower". The gun, which can hang, and a mortar capable of slapping direct fire with a cumulative mine.
In mountainous conditions, the gun can be transported as ten individual packs to pack animals. Or not animals, as lucky. At the same time, the maximum weight of one bag does not exceed 85 kg.
With proper preparation, the 4-6 minutes can assemble and disassemble the cannon into the transport position.
When used in the northern areas, the mountain cannon can be equipped with a special ski installation LO-8, which allows it to be transported in deep snow and marshland. If necessary, you can shoot directly from the skis. The weight of the ski machine LO-8 does not exceed 85 kg, so it is quite possible to tow a gun with a UAZ-469 car.
Due to its small mass and unreleased dimensions, the gun is naturally transported through the air by all possible military vehicles and is landed from them.
Shooting is conducted by separate-cartridge loading shots with high-explosive, armor-piercing, cumulative and smoke projectiles, as well as shrapnel.
The maximum range of high-explosive fragmentation projectile mass 6,28 kg with an initial speed 485 m / s is 10 000 m.
The 76-mm GP gun was in service with artillery units of the mountain-rifle units of the Soviet Army, was actively used in the fighting of the Limited contingent of Soviet troops in Afghanistan in 1979-1989, as well as in numerous ethnic conflicts in the late twentieth century in the former Soviet Union .
At present, the 76-mm mountain gun of the GP continues to be in service with the Russian Army.
TTX GP (M-99)
Weight in the fighting position - 735 kg
Barrel length - 1630 mm
Threaded length - 1122 mm
Calculation - 6 man
Travel speed - up to 60 km / h
Rate of Fire - sighting - 10 - 14 rds / min, maximum - 20 rds / min
The longest firing range - 10 000 m
Direct shot range - 850 m
Horizontal - 45 °
Vertically - 10 ° + 70 °
Shirokorad A. B. Encyclopedia of domestic artillery
Historical photo: http://www.russianarms.ru/forum/index.php?topic=5881.0