British Chieftain Tank - In the development of the Katurian, the Chieftain introduced the supine (reclining) driver position to the British design, allowing for a heavily sloped hull with less height. A new powerpack and improved transmission made it faster than the Cturion despite heavy improvements in armor protection and armament; This allows him to replace both the Conqueror and Katurian while effectively fulfilling their roles. It remained in service until replaced by the Challenger 1 which shared many of the functions of the Chieftain.
The Chieftain was an evolutionary development of the successful cruiser line of tanks that emerged at the end of World War II. Its predecessor, the Cturion Main Battle Tank (MBT), is generally considered the most successful of the post-war MBT designs.
British Chieftain Tank
However, the introduction of the Soviet IS-3/IS-4 heavy tank along with the Soviet T-54/T-55 forced the introduction of the Konqueror heavy tank armed with a 120 mm (4.7 in) gun. A single design combining the firepower of the Conqueror's 120 mm gun with the mobility and general utility of the Katurian was seen as the ideal combination.
British Main Battle Tank Chieftain Mk.10 Meng Model Ts051
Leyland, which was involved in the Cturian tank, produced its own prototype of a new tank design in 1956. Various aspects of the design were tested by the production of the FV4202 "40-ton Cturion". Gun mount. In fact, the FV4202 was a short Caturian chassis with a prototype of what would become the Chieftain turret, but armed with a 20pdr gun.
This work led to a War Office specification for a new tank. The Geral Staff specification drew on the experience of the Katurian tank as well as the Conqueror tank in the Korean War. The tank was expected to prove itself at long range, from a defensive position, and against medium artillery. Therefore, the weapon would have a greater angle of depression than the Conqueror's 8 degrees and would be equipped with better frontal armor. The tank was expected to achieve a rate of 10 rounds per minute in the first minute and six rounds per minute for the following four.
The first few prototypes were made available for military trials from 1959, which introduced a number of modifications. Improvements to address gen vibration and cooling resulted in a redesigned rear hull. This increased the design weight by about 50 tons and the suspension (which was designed for 45 tons) was strengthened accordingly. Trackpads had to be mounted to protect the roads from damage and the ground level was raised. The design was adopted in the early 1960s.
With the intention of buying the vehicle from Israel and manufacturing it locally. Two prototypes were delivered as part of a four-year trial.
Floz British Fv4201 Chieftain Mk.5 Mbt 1/35 Finished Tank Model
However, it was actually decided not to sell the brand to the Israelis (because, in that period in the late 1960s, Britain was softer towards the Arab states and Jordan than Israel),
In 1957, NATO specified that its forces must use multi-fuel engines. The early Leyland Jean delivered around 450 hp (340 kW) to the sprocket, which meant a top road speed of around 25 mph (40 km/h) and limited cross-country performance. This was further hampered by the Horstmann coil spring suspension, which made it a challenge to drive cross country and provide a comfortable ride for the crew. Because the cylinder conditions were pressure-matched, it was common for coolant to leak into the cylinder block, resulting in white smoke from the exhaust.
In the late 1970s, Gin design changed with the introduction of Belzona, which was used to improve fusion seals. Jin output also increased, with later Jins delivering 850 PS (630 kW) to the sprocket. This means better performance and increased speed. However, cross-country operations remained limited.
The Sardar design included a heavily sloped hull and turret, which greatly increased the effective thickness of the frontal armor - 388 mm (15.3 in) on the glacis (from a current thickness of 120 mm (4.7 in)) and 390 mm (15.4 inches) to the tower (up to 195 mm (7.7 inches).
Chieftain Mk.10 British Main Battle Tank Military Model Kit
It had a mantletless turret to take full advantage of tilting the vehicle up to t degrees in the hull-down position.
Early prototypes had a canvas strip covering the mantle for safety reasons and a tin box mounted on an inclined glazed plate to hide the layout of the vehicle.
The driver was semi-recumbent in the enclosure when its hatch was closed, which helped reduce the profile of the front glass panel. Commander, gunner and loader were in the turret. A large searchlight with infrared capability was housed in a tank house on the left side of the turret.
Leyland L60 Gene Pack at Bovington Tank Museum. The entire unit can be removed by crane from the FV434.
Dinky Military Kit \
The Leyland L60 Gene is a two-stroke opposed piston design designed for multi-fuel use, so it can run on any fuel. In practice the gene did not deliver the expected power and was unreliable, with an estimated 90% breakdown rate but improvements were introduced to address this. Primary problems include cylinder liner failure, fan drive problems and permanent leaks due to vibrations and poorly routed pipework. However, as the gene power improved, the tank itself became heavier.
The tank was operated by conventional tillers operated hydraulically on external brake discs. The discs work through an epicyclic gearbox that provides "regenerative" steering. The Merritt-Brown TN12 triple-differential gearbox was operated motorcycle style with a kick up/kick down "peg" on the left which activated the electro-hydraulic units in the gearbox, the throttle was operated by the right foot . In the tower was the loader on the left and the gunner on the right with the commander behind the gunner. Suspension was of the Horstmann bogie type with large side steel plates to protect the track and stand-off protection from hollow charge attack.
The main armament was a 120 mm L11A5 gun. This differed from most contemporary main tank armament in that it used separately loaded projectiles and charges as opposed to a fixed round. Charges were placed in flammable bags. Other tank weapons, such as the 120mm L1 gun on the Conqueror, are required to store or eject SPT shell cartridges. The combustible charges were stored in 36 recesses surrounded by pressure
A water/glycol mixture - the so-called "wet stock". In the event of a hit in the combat compartment, the jacket would collapse, absorb the load and prevent a catastrophic propellant explosion.
From The Vault: Chieftain Articles And Documents
Since there was no shell case, the load was fired from a Vt tube, which was automatically loaded from a T-round magazine on the breech.
Due to the length of the gun, which had to be balanced, and the need for storage space, the turret had a large overhang at the rear. This includes radios, ammunition and fire control equipment and further storage outside.
The weapon could fire a wide range of ammunition, but the most commonly loaded types were high-explosive pumpkin heads (HESH), armor-piercing discarding sabots (APDS) or practice round equivalents for both types. The Chieftain can store up to 64 projectiles (although the propellant storage allows a maximum of 36 charges per APDS round). The gun was completely stabilized with a fully computerized integrated control system. Secondary armament consisted of a coaxial L8A1 7.62 mm machine gun and a second 7.62 mm machine gun mounted on the commander's cupola.
The advantage of using two-part ammunition was that in the event of an inactive round like the APDS, the loader could reach for the next round and hold it in his lap, ready to load, while the gunner engaged and fired at the target. This practice increases the rate of fire but would be dangerous with one piece of ammunition.
In Development: Chieftain Mk.11
The initial fire control system (FCS) was the Marconi FV/GCE Mk 4. A .50-inch (12.7 mm) range gun was mounted above the main gun (carrying 300 rounds). The projectile ranged up to a maximum of 2,600 yards (2,400 m), at which point the tracer in the ranger round burned off, although the high warhead still made a visible "spritz" on impact. The tank commander had a rotating turret with nine vision blocks - all of which have a round sight, plus a 7.62 mm machine gun and an infrared (IR) capable projector coaxial with the gun. Aiming systems were provided for both the gunner and the tank commander; They had selectable magnification powers of 1x or 10x, rising to x15 on the Mk5 and beyond, and were interchangeable with IR vision systems for night operations (3x magnification power). The commander can rotate his turret to bring his sights on the target and consider the mechanism that brings the turret to the correct bearing so that the gunner can hit the target.
In an armored box on the left side of the turret was a large searchlight with an electrically controlled infrared filter, which had a relatively long range – up to 1–1.5 kilometers (0.62–0.93 mi).
From the early 1970s, the Mk 3/3 version replaced the range gun with a bar and strobe.
Chieftain battle tank, chieftain tank dinky toys, drive a chieftain tank, dinky chieftain tank, tank chieftain, chieftain tank for sale, chieftain tank firing, chieftain tank model, rc chieftain tank, tamiya chieftain tank, chieftain main battle tank, cobi chieftain tank
0 Comments