Traditional Culture Encyclopedia - Traditional stories - Grenade cannons in China and M777 Grenade cannons in the United States. Who's better?
Grenade cannons in China and M777 Grenade cannons in the United States. Who's better?
American M777 howitzer, of course.
The remote M777 howitzer is a derivative of the towed M777 155mm howitzer. Simply put, the towed M777 howitzer is installed on the chassis of HMT 8×6 high-mobility off-road vehicle. The car is equipped with a loading system, which can quickly load and unload howitzers. The cockpit is equipped with a nuclear biochemical protection system. The crew cabin can accommodate six artillery. Behind the cabin is a platform with modular conversion device. By changing the height and length of artillery, it meets the requirements of strategic maneuver, tactical maneuver and combat maneuver for artillery carrying. The long-range M777 gun adopts 52 times caliber barrel. The top of the passenger compartment is specially designed with a groove, which is to facilitate the placement of long barrels during strategic maneuvering. In combat maneuvers, the gun barrel will rise above the passenger compartment. The traditional method can be used in tactical maneuver, and the barrel is extended backwards. The long-range M777 155 mm howitzer includes 2 shells, weighing 12.3 tons as a whole, and has strategic maneuverability. If it is lifted by transport helicopter, the long-range M777 gun system needs to be divided into two parts: vehicle and gun. By transport plane, C-17 "Air Overlord" can transport 3 vehicles at a time, A4M can transport 2 vehicles at a time, and C-13 "Hercules" can transport 1 vehicle at a time. The artillery placed at the rear of the tractor can quickly enter the combat state. The long-range M777 gun is equipped with laser inertial automatic positioning system, power ammunition conveyor and power pitching device. Its performance is better than that of the towed M777 gun, and its shooting accuracy is significantly improved. The accuracy of hitting the target is 15 meters when the range is 3 kilometers and 5 meters when the range is 1 kilometers. The tractor also has three independent ammunition storage boxes, each containing 17 rounds of ammunition. This is also a feature of the long-range M777 howitzer.
the PLA's PLL1 155mm towed cannon howitzer is obviously heavier than the American one!
the model p>PLL1 gun is very simple in appearance, and adopts an open frame structure. All its structural parts are made of high-strength alloy steel, and it is equipped with pneumatic ammunition feeder, hydraulic main and auxiliary seats, etc., which is beneficial to reducing the weight of the whole gun, facilitating manual operation and ensuring the necessary stability of the gun shooting. For the structural description of artillery, friends may wish to refer to the schematic diagram in the reader's garden in this issue.
The barrel with a diameter of p>45 times is made of refined electroslag remelting steel blank, which has high strength. The barrel after self-tightening treatment has improved the fatigue strength, reduced the bore wear and prolonged the service life of the barrel. The bore structure of the gun body is manufactured according to NATO standards, and it can launch NATO general ammunition. The rifling of the barrel ends at a distance of 12.7 mm from the end face of the muzzle, and the muzzle is machined into a cylindrical shape without rifling to eliminate cracking and deformation.
The bolt adopts screw structure, and its biggest feature is that it realizes semi-automation of bolt opening.
When the gun is fired, the pneumatic projectile conveyor completes the delivery of the projectile into the gun bore, so as to improve the loading speed of the projectile. The pneumatic ammunition conveying machine and the ammunition conveying disc are mounted on the bracket connected with the gun tail. The whole ammunition conveying mechanism can move up and down with the gun, and can provide uniform and stable elastic force at any shooting angle. The energy of the ammunition conveying mechanism is provided by a high-pressure gas cylinder mounted on the left frame through a pipeline, and the air pressure is adjustable.
In order to make the recoil part of the gun long and recoil when shooting at low firing angle, the gun mount has good stability; When shooting at high shooting angle, the recoil part is short, so that it will not be damaged by impact with the ground. The gun is equipped with a variable recoil device in the recoil mechanism.
The braking system of the gun includes hand braking and pneumatic braking. Through their cooperation, the gun and the tractor can be braked at the same time, so as to avoid hitting the tractor due to the lagging braking of the gun. The system is always in the inflatable standby state, so that the gun car can continue to brake when it goes down a long slope; When the car gun releases the brake, it can ensure the action synchronization and avoid the problem of locking or towing caused by the lag of gun release. The gun also adopts a steering linkage mechanism, which can ensure that the cannon wheel and the tractor wheel tend to the same track when marching and steering, because if the turning radius of the wheel and the cannon wheel on the ground is different when steering, the road width is required to be large enough, which directly affects the passing performance of the gun. With this mechanism, the performance of artillery passing through bridges, culverts, bends and even rural roads has been greatly improved.
The aiming mechanism is composed of a high-low machine, a directional machine and a balancing machine, which endows the gun with firing angle and firing boundary. The sighting device consists of a set of four-digit digital display sights, a panoramic sight, an illuminator, a calibrator and other devices. The fire control system adopts advanced military microcomputer and software technology, and is equipped with a command system that can be used for fire direction and shooting at company and battalion levels, thus realizing the modernization of artillery operations.
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