Praetonia
29-10-2005, 20:08
Z-41 / IPO-41 Regus Light Battle Tank
Introduction and History
In response to a joint requirement issued by the Praetonian and Sarzonian armed forces for a Light Battle Tank capable of being airdropped behind enemy lines or carried by a cargo aircraft to a combat theatre and engaging enemy infantry, fortified positions and armoured vehicles, Imperial Praetonian Ordnance and the Incorporated Ordnance Company formed a joint design team to produce a vehicle to satisfy this requirement. The vehicle that was produced and accepted by both governments was the Z-41 / IPO-41 Regus.
Armament - Offensive
Several weapons were considered for the primary armament of the Regus, and a new 105mm conventional rifled weapon was selected for use. ETC guns were deemed too complex and heavy to be easily airdropped, and a 120mm conventional gun was considered but rejected for similar reasons. The possibility of fitting a smoothbore 105mm was also considered, but it was decided that the 105mm weapon would enable better performance against fortified positions and infantry and would be perfectly adequate for use against other light vehicles. It was also decided that a conventional 105mm gun would still be too light for use against MBTs, and that that work should be handed over to the ATGMs.
The 105mm rifle mounted on the Regus is 54 calibres long and capable of firing HE, HEAT, HESH, APDS and HE-FRAG. The weapon is loaded automatically by an autoloader stowed in the turret bustle, which reduces the need for manpower in the operation of the vehicle. The autoloader is capable of loading the gun whilst it is elevated, and can provide a sustained RoF of 10 rounds per minute, or burst fire at a rate of 15 rounds per minute. The gun is stabilised on both axis, and equipped with a fume extractor. Forty-five rounds are stowed as standard, with 25 + 1 loaded in the autoloader system at any one time and the rest in armoured boxes below the turret ring.
The secondary offensive armament of the vehicle comes in the form of 4 ATGM launcher cells mounted to the rear of the turret above the bustle. They are equipped on Praetonian and Sarzonian tanks with Smasher / Aquila ATGMs (the only difference being the guidance system - the Sarzonian Smasher is a beam-riding weapon whereas the Praetonian Aquila is guided by a high-resolution thermal imager). These weapons can by default utlise a top-attack profile against MBTs and a direct-fire profile against fortified positions. In addition to the four missiles stored ready in the launchers, there are armoured boxes for a further four fitted as standard below the turret ring.
Armament - Defensive
The Regus is equipped with a light but nonetheless powerful secondary armament, the primary aspect of which is the 15.5mm machinegun mounted co-axially to the main cannon. This weapon features a dual-loading mechanism and is capable of a very high rate of fire. The weapon is highly effective against both infantry and soft-skinned vehicles. One thousand rounds of ammunition can be stowed within the tank and in external ammunition boxes on the turret.
The vehicle is also equipped with a 40mm automatic grenade launcher mounted on the commander's cupola ring. This weapon is highly effective against infantry in the suppression and direct engagement roles, and moderately effective against soft skinned vehicles. The weapon can be controlled manually or remotely from within the turret when the tank is buttonned. Provisions are made as standard for the stowage of two hundred and fifty rounds of 40mm ammunition.
The final weapon in the vehicle's arsenal is the Praetonian-built 7.7mm caseless light machinegun mounted in the gunner's cupola. This weapon is highly effective against infantry and moderately effective against unarmoured vehicles and light cover. This weapon can also be controlled either manually or remotely from within the turret, and provision is made for the stowage of one thousand rounds of ammunition.
Protection - Passive Defence Systems
In addition to the armour described below, the vehicle is equipped with a number of passive defensive systems. The camoflauge paint of the vehicle is of an industrially produced extremely dark matt, which absorbs much of the light emmitted by enemy laser rangefinders, seriously depleting their effects at long range.
The vehicle is also equipped with 12 "smoke" grenades which project a thick cloud of particles into the surrounding environment. As well as obscuring the vehicle from visible sight, the particles will also refract and otherwise block or distort laser beams, rendering laser rangefinders useless against the vehicle whilst covered by the smokescreen. The vehicle can also produce smoke by injecting diesel into its exhaust manifolds.
Protection - Armour
The Regus specification called for a somewhat formidable armour scheme with a very tight weight limit. It was accepted that there was no way of protecting the tank from APFSDS rounds fired from MBTs (other than to store explosives in armoured boxes and ensure maximum possible safety of the crew) and so the following scheme was decided upon:
Outermost layer - Non-Explosive Reactive Armour (NxRA). This layer greatly reduces the effect of HEAT warheads. Its effects are significantly reduced against KE warheads. Although largely inferior to ERA, this was chosen because the tank is designed to be deployed mostly in the support of infantry. When operating alone it can be equipped with an additional layer of ERA.
2nd Layer - Ballistic Ceramics. Ballistic ceramics are extremely resistant to heat and kinetic energy, meaning that this layer will either stop or drastically reduce the effects of both HEAT metal jets and KE penetrators.
3rd Layer - Aluminium Alloy. Aluminium alloys are some of the strongest known metals in existance and they are also very light. This layer provides good all-round protection.
4th Layer - Titanium Honeycomb Frame. Titanium is also an extremely strong, light metal and makes an excellent all-round basic frame for the vehicle.
5th Layer - 9th Layer - Boronated polycarbons. This is both a stong layer in itself, and a radiation-absorbing layer.
6th Layer - Rubber and kevlar. This layer absorbs any spalling that may otherwise adversely affect the crew and systems.
The approximate RHA armour values are as follows:
Front: 350mm (KE) / 500mm (HEAT)
Side: 140mm (KE) / 220mm (HEAT)
Rear: 105mm (KE) / 165mm (HEAT)
Top: 95mm (KE) / 120mm (HEAT)
The armour is not modular, but solid. Although this makes it harder to repair, it also gives the armour extra strength whilst not adding any extra weight, and the tanks are not designed to be involved directly in combat for sustained periods of time.
The Regus comes with a Tank Roof (http://img.photobucket.com/albums/v387/Praetonia/HopliteIIPhalanx-TankRoof.png), as seen here moddled by IPO-145 Hoplite II - Phalanx MBT which can be attached and detatched as necessary. The tank roof is designed to prematuely detonate top-attack munitions, rendering them largely useless. It also provides significant protection from aerial attacks with guns or KE missiles. The tank roof features also NxRA, allowing it to stand up to munitions much heavier than its thickness suggests it could. The tank can also be fitted with skirts of a similar makeup along the sides and rear, as well as along the sides and rear of the turret.
In addition to exterior armour, the interior of the vehicle is partitioned so as to seperate the engine and fuel from the crew compartment, and the shells and charges are stored in armoured boxes below the turret ring for additional protection. The autoloader is also armoured to prevent a shell from detonating inside it.
The Regus is also designed to be able to retain functionality even if all electronic systems are knocked out. The autoloader is constructed to allow manual loading to take place if its electronics are disabled. The autoloader is also equipped with a manual shell ejection system to clear the barrel, and the conventional nature of the gun allows it to fire without power. The co-axial machinegun can be used for rangefinding, and all the cupola-mounted weapons can be operated manually
Sensors
The Regus is equipped with a similar array of advanced sensors to the Phalanx. Firstly, the Regus is equipped also with the obligatory laser rangefinder, as well as high-resolution thermal imagers all around the vehicle. This can be used to allow the tank to function even in an NBC or smoky environment.
The vehicle has high-resolution digital cameras dotted around the vehicle embedded in the armour. They are reasonably well protected from random small arms fire, although a concerted effort to destroy them is very difficult the defend against. These cameras, which have both normal and night-sight modes, provide the crew with an all-round view of the battlefield.
In addition to these cameras, the Regus mounts a rotatable periscope-mounted conventional, nightsight and thermal camera which can be deployed when the vehicle is faced with obstacles. The camera can be withdrawn into an armoured control box on the right hand side of the turret bustle, providing it with relatively dependable protection from most threats when not deployed. The periscope-camera can also allow the vehicle to navigate whilst snorkling.
In a similar manner to the Phalanx, the Regus can deploy a teathered balloon from within the vehicle, which is stored in an armoured box outside. The balloon features a small radar anttena as well as a thermal imager and conventional camera. The balloon can be pulled back down using a motor inside the box and theoretically restored for a second use.
Also loaded onto the Regus as standard are a multitude of targetting detection systems including passive radar which will detect when the tank is being targetted and attempt to triangulate the position of the offending enemy vehicle. The turret can be configured to automatically home in on enemy targetting attempts and load a shell if the gun is not alreayd engaged in some other work.
Mobility
The Regus is powered by a 400hp diesel-electric hybrid motor which can drive it at speeds up to a theoretical 50mph across country. The engine is much more fuel-efficient than gas-turbines used on tanks such as the US Abrams, and so gives the vehicle a much longer effective operational range. The vehicle can switch solely to battery power, which eliminates the sound of the engine.
The vehicle can deploy the electric motor to traverse a river without using a snorkle, although this is not recommended. Whilst using a snorkle, the diesel engine can achieve a theoretical maximum of 12mph whilst crossing a river up to 6m deep.
General Specifications:
Length: 8m (hull); 10.5m (inc. gun)
Width: 4.2m
Height: 3.1m (turret roof);
Ground Clearance: 0.5m
Combat Weight: 23,500kg
Crew: 3 (Commander / Gunner; Gunner; Driver)
Main Armament: 1x 105mm/54 Rifled Gun; 4 cell ATGM launcher
Ammunition Stowage: 45 105mm rounds; 8 + 4 ATGMs
Secondary Armament: 1x 15.5mm machinegun (co-axial); 1x 40mm automatic grenade launcher (commander's cupola); 1x 7.7mm caseless machinegun (gunner's cupola); 12x smoke grenade launchers
Ammunition Stowage: 1,000x 15.5mm rounds; 250x 40mm grenade rounds; 1,000x 7.7mm caseless rounds
Engine: 1x IPO 'Pluto' 600bhp diesel-electric hybrid
Theoretical Maximum Speed: 65mph (road); 50mph (cross-country); 12mph (snorkling)
Operational Range: 500 miles
Fording Depth: 2.5m (normal); 6m (snorkle)
Production Cost: $6,000,000
Export Cost: $7,500,000
[OOC: Constructive criticism, Etc. welcome, and equal credit goes to Sarz who designed this with me.]
Introduction and History
In response to a joint requirement issued by the Praetonian and Sarzonian armed forces for a Light Battle Tank capable of being airdropped behind enemy lines or carried by a cargo aircraft to a combat theatre and engaging enemy infantry, fortified positions and armoured vehicles, Imperial Praetonian Ordnance and the Incorporated Ordnance Company formed a joint design team to produce a vehicle to satisfy this requirement. The vehicle that was produced and accepted by both governments was the Z-41 / IPO-41 Regus.
Armament - Offensive
Several weapons were considered for the primary armament of the Regus, and a new 105mm conventional rifled weapon was selected for use. ETC guns were deemed too complex and heavy to be easily airdropped, and a 120mm conventional gun was considered but rejected for similar reasons. The possibility of fitting a smoothbore 105mm was also considered, but it was decided that the 105mm weapon would enable better performance against fortified positions and infantry and would be perfectly adequate for use against other light vehicles. It was also decided that a conventional 105mm gun would still be too light for use against MBTs, and that that work should be handed over to the ATGMs.
The 105mm rifle mounted on the Regus is 54 calibres long and capable of firing HE, HEAT, HESH, APDS and HE-FRAG. The weapon is loaded automatically by an autoloader stowed in the turret bustle, which reduces the need for manpower in the operation of the vehicle. The autoloader is capable of loading the gun whilst it is elevated, and can provide a sustained RoF of 10 rounds per minute, or burst fire at a rate of 15 rounds per minute. The gun is stabilised on both axis, and equipped with a fume extractor. Forty-five rounds are stowed as standard, with 25 + 1 loaded in the autoloader system at any one time and the rest in armoured boxes below the turret ring.
The secondary offensive armament of the vehicle comes in the form of 4 ATGM launcher cells mounted to the rear of the turret above the bustle. They are equipped on Praetonian and Sarzonian tanks with Smasher / Aquila ATGMs (the only difference being the guidance system - the Sarzonian Smasher is a beam-riding weapon whereas the Praetonian Aquila is guided by a high-resolution thermal imager). These weapons can by default utlise a top-attack profile against MBTs and a direct-fire profile against fortified positions. In addition to the four missiles stored ready in the launchers, there are armoured boxes for a further four fitted as standard below the turret ring.
Armament - Defensive
The Regus is equipped with a light but nonetheless powerful secondary armament, the primary aspect of which is the 15.5mm machinegun mounted co-axially to the main cannon. This weapon features a dual-loading mechanism and is capable of a very high rate of fire. The weapon is highly effective against both infantry and soft-skinned vehicles. One thousand rounds of ammunition can be stowed within the tank and in external ammunition boxes on the turret.
The vehicle is also equipped with a 40mm automatic grenade launcher mounted on the commander's cupola ring. This weapon is highly effective against infantry in the suppression and direct engagement roles, and moderately effective against soft skinned vehicles. The weapon can be controlled manually or remotely from within the turret when the tank is buttonned. Provisions are made as standard for the stowage of two hundred and fifty rounds of 40mm ammunition.
The final weapon in the vehicle's arsenal is the Praetonian-built 7.7mm caseless light machinegun mounted in the gunner's cupola. This weapon is highly effective against infantry and moderately effective against unarmoured vehicles and light cover. This weapon can also be controlled either manually or remotely from within the turret, and provision is made for the stowage of one thousand rounds of ammunition.
Protection - Passive Defence Systems
In addition to the armour described below, the vehicle is equipped with a number of passive defensive systems. The camoflauge paint of the vehicle is of an industrially produced extremely dark matt, which absorbs much of the light emmitted by enemy laser rangefinders, seriously depleting their effects at long range.
The vehicle is also equipped with 12 "smoke" grenades which project a thick cloud of particles into the surrounding environment. As well as obscuring the vehicle from visible sight, the particles will also refract and otherwise block or distort laser beams, rendering laser rangefinders useless against the vehicle whilst covered by the smokescreen. The vehicle can also produce smoke by injecting diesel into its exhaust manifolds.
Protection - Armour
The Regus specification called for a somewhat formidable armour scheme with a very tight weight limit. It was accepted that there was no way of protecting the tank from APFSDS rounds fired from MBTs (other than to store explosives in armoured boxes and ensure maximum possible safety of the crew) and so the following scheme was decided upon:
Outermost layer - Non-Explosive Reactive Armour (NxRA). This layer greatly reduces the effect of HEAT warheads. Its effects are significantly reduced against KE warheads. Although largely inferior to ERA, this was chosen because the tank is designed to be deployed mostly in the support of infantry. When operating alone it can be equipped with an additional layer of ERA.
2nd Layer - Ballistic Ceramics. Ballistic ceramics are extremely resistant to heat and kinetic energy, meaning that this layer will either stop or drastically reduce the effects of both HEAT metal jets and KE penetrators.
3rd Layer - Aluminium Alloy. Aluminium alloys are some of the strongest known metals in existance and they are also very light. This layer provides good all-round protection.
4th Layer - Titanium Honeycomb Frame. Titanium is also an extremely strong, light metal and makes an excellent all-round basic frame for the vehicle.
5th Layer - 9th Layer - Boronated polycarbons. This is both a stong layer in itself, and a radiation-absorbing layer.
6th Layer - Rubber and kevlar. This layer absorbs any spalling that may otherwise adversely affect the crew and systems.
The approximate RHA armour values are as follows:
Front: 350mm (KE) / 500mm (HEAT)
Side: 140mm (KE) / 220mm (HEAT)
Rear: 105mm (KE) / 165mm (HEAT)
Top: 95mm (KE) / 120mm (HEAT)
The armour is not modular, but solid. Although this makes it harder to repair, it also gives the armour extra strength whilst not adding any extra weight, and the tanks are not designed to be involved directly in combat for sustained periods of time.
The Regus comes with a Tank Roof (http://img.photobucket.com/albums/v387/Praetonia/HopliteIIPhalanx-TankRoof.png), as seen here moddled by IPO-145 Hoplite II - Phalanx MBT which can be attached and detatched as necessary. The tank roof is designed to prematuely detonate top-attack munitions, rendering them largely useless. It also provides significant protection from aerial attacks with guns or KE missiles. The tank roof features also NxRA, allowing it to stand up to munitions much heavier than its thickness suggests it could. The tank can also be fitted with skirts of a similar makeup along the sides and rear, as well as along the sides and rear of the turret.
In addition to exterior armour, the interior of the vehicle is partitioned so as to seperate the engine and fuel from the crew compartment, and the shells and charges are stored in armoured boxes below the turret ring for additional protection. The autoloader is also armoured to prevent a shell from detonating inside it.
The Regus is also designed to be able to retain functionality even if all electronic systems are knocked out. The autoloader is constructed to allow manual loading to take place if its electronics are disabled. The autoloader is also equipped with a manual shell ejection system to clear the barrel, and the conventional nature of the gun allows it to fire without power. The co-axial machinegun can be used for rangefinding, and all the cupola-mounted weapons can be operated manually
Sensors
The Regus is equipped with a similar array of advanced sensors to the Phalanx. Firstly, the Regus is equipped also with the obligatory laser rangefinder, as well as high-resolution thermal imagers all around the vehicle. This can be used to allow the tank to function even in an NBC or smoky environment.
The vehicle has high-resolution digital cameras dotted around the vehicle embedded in the armour. They are reasonably well protected from random small arms fire, although a concerted effort to destroy them is very difficult the defend against. These cameras, which have both normal and night-sight modes, provide the crew with an all-round view of the battlefield.
In addition to these cameras, the Regus mounts a rotatable periscope-mounted conventional, nightsight and thermal camera which can be deployed when the vehicle is faced with obstacles. The camera can be withdrawn into an armoured control box on the right hand side of the turret bustle, providing it with relatively dependable protection from most threats when not deployed. The periscope-camera can also allow the vehicle to navigate whilst snorkling.
In a similar manner to the Phalanx, the Regus can deploy a teathered balloon from within the vehicle, which is stored in an armoured box outside. The balloon features a small radar anttena as well as a thermal imager and conventional camera. The balloon can be pulled back down using a motor inside the box and theoretically restored for a second use.
Also loaded onto the Regus as standard are a multitude of targetting detection systems including passive radar which will detect when the tank is being targetted and attempt to triangulate the position of the offending enemy vehicle. The turret can be configured to automatically home in on enemy targetting attempts and load a shell if the gun is not alreayd engaged in some other work.
Mobility
The Regus is powered by a 400hp diesel-electric hybrid motor which can drive it at speeds up to a theoretical 50mph across country. The engine is much more fuel-efficient than gas-turbines used on tanks such as the US Abrams, and so gives the vehicle a much longer effective operational range. The vehicle can switch solely to battery power, which eliminates the sound of the engine.
The vehicle can deploy the electric motor to traverse a river without using a snorkle, although this is not recommended. Whilst using a snorkle, the diesel engine can achieve a theoretical maximum of 12mph whilst crossing a river up to 6m deep.
General Specifications:
Length: 8m (hull); 10.5m (inc. gun)
Width: 4.2m
Height: 3.1m (turret roof);
Ground Clearance: 0.5m
Combat Weight: 23,500kg
Crew: 3 (Commander / Gunner; Gunner; Driver)
Main Armament: 1x 105mm/54 Rifled Gun; 4 cell ATGM launcher
Ammunition Stowage: 45 105mm rounds; 8 + 4 ATGMs
Secondary Armament: 1x 15.5mm machinegun (co-axial); 1x 40mm automatic grenade launcher (commander's cupola); 1x 7.7mm caseless machinegun (gunner's cupola); 12x smoke grenade launchers
Ammunition Stowage: 1,000x 15.5mm rounds; 250x 40mm grenade rounds; 1,000x 7.7mm caseless rounds
Engine: 1x IPO 'Pluto' 600bhp diesel-electric hybrid
Theoretical Maximum Speed: 65mph (road); 50mph (cross-country); 12mph (snorkling)
Operational Range: 500 miles
Fording Depth: 2.5m (normal); 6m (snorkle)
Production Cost: $6,000,000
Export Cost: $7,500,000
[OOC: Constructive criticism, Etc. welcome, and equal credit goes to Sarz who designed this with me.]