That_Baka

Possible layout of T-14 frontal armor
http://otvaga2004.mybb.ru/viewtopic.php?id=2159&p=2#p1244215

 

Lotta memes and myths going on here, if there was a primary reason the US hasn't adopted an autoloader on a tank it would be penny pinching and budget cuts.

Nordic Feminist Design Division presents: P2055 “Gaupen”

 
 

 
 

 
 

 
 
 
Table of basic statistics:
Parameter
Value
Mass, combat
  65 metric ton
Length, combat (transport)
  7050mm
Width, combat (transport)
  3877mm
Height, combat (transport)
  2000mm
Ground Pressure, MMP (nominal)
  297Kn/m2
Estimated Speed
  60Kp/h
Estimated range
  400Km
Crew, number (roles)
  2 (Commander, Gunner/Driver)
Main armament, caliber (ammo count ready/stowed)
  200mm L40 gun. (40 rounds, 15 in first autoloader).
Secondary armament, caliber (ammo count ready/stowed)
  7,62mm GPM (1200 rounds).
 
12,7mm HMG (500 rounds)
 
Vehicle designer’s notes:
The P2250 was designed to be as heavily armored as possible, with the smallest weight and profile.  We tried to make use of the new experimental technologies and developed our own hydrostatic transmission and hydropneumatic suspension. This allowed much greater low speed mobility and some interesting arrangements. With the cannon mounted to the chassis, the autoloader became simplified and allowed a higher theoretical rate of fire and a reduction of crew to only 2. 

Mobility:
1. Link to Appendix 1- Not realized because of lack of weight value. 
 
2. Engine - Kharkov 5TD (increased to 6 cylinder), 16L, 800HP, water cooled, constant speed.
 
3. Transmission - Hydrostatic, 1 Forward, 1 Neutral and 1 Reverse, engine forward; motor and controls in the rear, is a continuously variable transmission, allow the engine to run at a constant speed with instant torque. It features hydraulic breaking and locking on top of normal friction breaks, also has a minor regenerative capabilities.
Appendix

Location of drive train components and their connections:

 
 
4.Fuel - Diesel, 1000L, sponsons, 400km, was planning to add optional fuel barrels for increased range, but scrapped because of time limit. 
 
5. Powerpack is set up as an open circuit hydraulic system, allowing it to power auxiliary equipment and other subsystems like the auto loader and suspension, or power tools.
Appendix
 
6. Suspension- Hydropneumatic (Nitrogen), 500mm suspension travel, 500mm ground clearance. The suspension is a fully adjustable in arm suspension using a slider crank design. Each arm has a built in shock absorber and can be either electronically or manually adjusted. Each unit has an overpressure valve to limit damage to the unit during very rough travel. Each unit is a bolt on unit, making replacements easy and fast.
Appendix
 
View of the suspension:


 
 
 
 
Survivability:


 
Red: Ammunition and cannon.
Blue: Composite armor.
Grey: Drive line components.
Green: Fuel. 
Brown: Crew. 
 
 
1.     Link to Appendix 1 - Not realized. 
 
2.     Link to Appendix 2- Not Realized,  has a 1000mm deep armor cavity at 1,79m^3 at the front, with a 900mm deep armor cavity at 180mm height on each sponsons. 
 
3. Non-specified survivability features and other neat tricks-
Very low profile vehicle with the ability to further reduce its profile by lowering its suspension. Very low profile while in hull down position.
Has blow off panels, light panels that are screwed in place to break off when ammunition ignites.   Fuel is used as side armor. 
 
Firepower:
 
A.    Weapons:
 
1.     Link to Appendix 1- Not realized.
 
2.     Main Weapon-
 
a.      Smoothbore cannon (510 MPa working pressure). 
 
b.      200mm caliber. 
 
c.      Ammunition:
         Common: 200 x 900 mm brass case, estimated 50kg. 
         HEAT: Not realized. 
         HE: Not relied. 
         AP: Not realized. 
   
 
d.     Ammo stowage arrangement- 15 rounds stored in primary shell conveyor, 25 rounds stored in secondary shell conveyor.  Entire system has blow off panels above it. The system is powered by the tanks hydraulic circuit. 
 
 
B.    Optics:
 
1.     Primary gunsight- two axis stabilized gunners sight.
 
2.     Drivers 3 vison telescopes. Commander features 360 degree coverage form the copula with a 4x sight connected to the RCWS. 
 
C.    FCS:
 
1.     FCS- Gun is rigidly mounted to the chassis. The gunner can select a firing mode to put the vehicle into precision mode.  Tracks turn to traverse the cannon, and the suspension adjusts to elevate to depress the gun. The gunners controls feeds into the suspensions control system, modifying the pressure in each individual suspension unit to accomplish the right elevation/depression. A gyroscope keeps track of the vehicles tilt and adjusts accordingly.  
The commanders station has duplicated controls and features a fully rotatable commanders copula with a range finder and 12,7mm remote operated HMG. The commander can measure the range and move the tank accordingly, giving a sort of hunter-killer system. 
 
2.     Link to Appendix 3- May be added in the future. 
 
Fightability:
 
1.     Ease of service and maintenance on the suspension units.
2.     Low maintenance transmission, hydraulic motors do not require a lot of maintenance.
3.     Reduced brake wear because of hydraulic parking break and minor regenerative breaking. 
4.     Reduced engine wear from running on a stable RPM. 
5.     It has a 200mm cannon. 
6.     Has a remote controlled weapons station, allowing the commander to avoid peaking his head out when firing on infantry.
 
Free expression zone:
The Nordic Feminist Design Division felt that there was a sever lack of special needs armored fighting vehicles which strives against our glories republics values. 
The team set out to make the most inclusive vehicle possible. The turret was quickly removed as it was seen as offensive to the crippled, gifted people of our republic.  Next was the issue with the height. The tank was too high to climb aboard for midgets little people, so a adjustable suspension was installed to allow the tank to lower itself. It was also of the highest importance that even our machines would bow to our Serene Highness. 
The gun was requested to be of at least 200mm caliber, which our lead engineer said was outrageous (our lead engineer has been REDACTED, and has been replaced by a more suiting, and diverse individual).  Our lead engineer agreed and work began to install the gun. Our female engineers noted that the ammunition was too heavy to be loaded manually for a woman, and was deemed discriminatory, so a autoloader was developed to accommodate the superior gender. 
 
As of currently our team failed to meet the deadline and has been REDACTED. 
Our team has been sent on a holiday in the North to sunbath in the north. 
 

 
A picture of our team of engineers going to work. 
 
 
All Hail Serene Highness.
 
 
 
(I will try to add the schematics tomorrow for the suspension and transmission, but it is 01:30 here, and I am taking the bus to work at 06:00. )

FINAL SUBMISSION:
 
AFV-50 — T-52
(Object 138)
A Product of SierraNevadaVagonzavod

Chief Designer
Whatismoo
 
Aeronautical Engineering, Drafting, Armor, and Hypervelocity Threat Projectile Testing Objects (HTPTO)
A. T. Mahan
 
Advanced Technology Bureau, Ramjet Propulsion Development
Hephaestus Aetnaean
 
Digital Computing and Hypersonics, Computational Armor Optimization:
CKFinite
 
Advanced Design Bureau
Flapjack
OnlySlightlyCrazy
 
Space Operations
Crazy
 
 
Table of basic statistics:
 
Parameter
 
Value
 
Mass, combat
 
49 365kg (W/ERA, 47 982 W/O ERA)
 
Length, combat (transport)
 
9.950m
 
Width, combat (transport)
 
Width, with ERA: 4.251m
Width, no ERA: 4.0m
Width over tracks: 3.86m
Height, combat (transport)
 
2.41m
 
Ground Pressure, MMP (nominal)
 
231.1 kPa (88.4 kPa)
 
Estimated Speed
 
>75kph (25-33hp/ton)
 
Estimated range
 
460km on internal fuel, 720km with additional external drums
 
Crew, number (roles)
 
3 (Commander, Gunner, Driver-Mechanic)
 
Main armament, caliber (ammo count ready/stowed)
 
125mm Smoothbore Gun 2A35 (30 Ready, 45 Total)
 
Secondary armament, caliber (ammo count ready/stowed)
 
Coaxial 7.62mm PKT (2000 ready, 4000 total)
Commander's KPVT (100 ready, 500 stowed)
 
 
 
Vehicle designer’s notes: As chief designer of the 2250 Heavy Tank program at SNVZ, we had spent quite some time theorizing about ways to remedy the, frankly, superiority of the Cascadian "Norman" Medium Tank over current Californian vehicles. Our design needed to not only meet the Norman, but exceed it, by enough to ensure that no simple upgrades of the Cascadian design could undermine the qualitative advantage our design held. Where the Norman is, in many ways, a radically re-designed and improved T-55, SNVZ decided to take a similar approach with the far superior T-72. The result is a robust, light weight, technologically advanced, and astoundingly lethal vehicle which can be comfortably operated in all environments which it could expect to face, from the heat of the Mojave to the alpine chill of the Sierra Nevadas.
 
Vehicle feature list:
Mobility:
 
1.    APPENDIX 1: https://mega.nz/#!IQhH3YJA!kXnIfS2rWaeVaA1hM8ouQwpfTQ08K4qW3jNOIY8a_Ig
 
2.     Engine- EVDS-2230-2 V-12, 2,230 cubic inch, 1,562hp, water cooled, FADEC, electronically controlled fuel injection, and twincharged.
 
3.     Transmission- CD-1750 crossdrive-type eight-speed manual gearbox, mounted in VPK-3B powerpack, able to handle much greater power.
 
4.     Fuel- Type, Automotive diesel, 1,200L + 416L stowed in the hull and in auxiliary quick-detach barrels at the rear hull, 460km internal/720km with aux tanks, auxiliary tanks can be jettisoned remotely from driver or commander's position.
 
5.    Under-armor APU (52hp, 15kW), mechanical cooling system for driver-mechanic.
 
6.     Suspension- Torsion-bar, +325mm/-125mm travel, 490mm ground clearance, rotary-type shock absorbers on all arms, modularized easily-replacable design.
 
Survivability:
 
1.     Link to Appendix 1 - https://mega.nz/#!IQhH3YJA!kXnIfS2rWaeVaA1hM8ouQwpfTQ08K4qW3jNOIY8a_Ig
 
 
2.     Link to Appendix 2- armor array details: https://mega.nz/#!IRhBUaDS!6a01a-Z6tpCzOeqzdGqxoo9poVTBN4RQ-nMIRHVabQU
 
3.     [In Spoiler Box]
 
Firepower:
 
A.    Weapons:
 
1.     Link to Appendix 1- https://mega.nz/#!IQhH3YJA!kXnIfS2rWaeVaA1hM8ouQwpfTQ08K4qW3jNOIY8a_Ig
 
2.     Main Weapon- 2A35 (image in spoiler tag)
 
a.     Type: Smooth Bore Tank Gun
 
b.      Caliber: 125mm L/48
 
c.      Ammunition types and performance (short)
3BR1 APCBC-FS [Modified BR-472 projectile at 1,245m/s] 3OF1 HE-FS [950m/s] 3OF2 DEMO-FS [It’s a oversize HE round to replace the venerable 152mm assault gun in urban combat] 3BK1 Tandem-charge HEAT [55/115mm HEAT, 915m/s] 3BK2 Triplex-charge HEAT [85/115/115 HEAT, 915m/s] 3UBM3 AP-SFRJ: See Appendix 3 for details 3BM2 Hypervelocity Threat Projectile Testing Object: (750x50mm rod at 1,580m/s) 3BM3 Hypervelocity Threat Projectile Testing Object: (850x36.4mm segmented rod at 2,000m/s)  
d.     Ammo stowage arrangement

The AL-type carousel-pattern automatic loader is capable of handling cartridges of 950mm overall length (technically 975 is the physical limit, but it is believed that a 950mm cartridge overall length limit allows significant room for growth while leaving some clearance inside the autoloader). It services the gun in circa 6 seconds, providing a reliable 10-round-per-minute rate of fire. It is fed by a 30-round carousel, with the cartridges arranged vertically around the turret ring. Reloading the autoloader carousel is conducted by the crew, and most of the shells are a single-person lift. Some of the more exotic types, including but not limited to 3BR1, 3BK2, 3OF1, 3OF3, and 3UBM3 are shipped separately as two pieces, and assembled during loading into the autoloader carousel due to the high projectile weight.
 
The vehicle is provided with two hull ammunition racks flanking the driver, which are not able to be loaded from in combat and are NOT capable of storing 3BK2, 3OF3, or 3UBM3. The autoloader separates the turret basket from the hull with a steel splinter-protective bulkhead of 5mm thickness and the driver is unable to maneuver those sorts of ammunition through the loading hatch. Total ammunition stowage for the main gun is 45 rounds, 30 in the autoloader and 15 in the hull storage racks.
 
e.      FCS- relevant systems, relevant sights for operating the weapon and so on. 
 
f.      Neat features. -- See Above
 
3.     Secondary weapons- 
Coaxial PKT:
Feeding from left to right with a disintegrating link belt. Mounted in the Mk.18 mount, and provided with 4000 rounds ammunition, of which 2000 is ready. Integrated into the main gun FCS.
 
 
 
 
Commander's KPVT:

 
 
The commander is provided with a 14.5x114mm KPVT heavy machine gun mounted to the cupola, with a sighting and control system for use while under armor. This is provided with 100 rounds of linked ready ammunition, and a further 400 rounds stowed in the turret basket in ammunition cans, with provision made to stow extra ammunition cans to the turret roof for quick reloads. The commander’s KPV can also be used as a manually operated anti-aircraft gun. It was chosen to provide a range overmatch against Mormon forces, as the 14.5x114mm cartridge possesses nearly twice the muzzle energy of the 12.7x99mm round, and has commensurately better long range performance. The Commander’s machine gun is provided with a 1-8x variable power periscopic optical system for use under armor, and back-up iron sights. Control is through electric motors and geared drive, and the gun can be slaved to the sight. It provides light vehicle and anti-infantry capability to 3,000m. The mount is fully stabilized and is able to be used effectively while on the move, and incorporates F50 NGVII image intensifying tubes
 
 
4.     Link to Appendix 3- Weapon system magic. (Also APS system and Semiconductor production) https://mega.nz/#!EBRiRQ6Q!5wYPI0yDpF_8qGgA5KHUR1cHtbtmdFy8nxn5XOECdHc
 
B.    Optics:
 
1.     Primary gunsight
The TPD-2-49 stereoscopic rangefinding sight assembly is a fully stabilized rangefinder and gunsight with day / night capabilities. Day sighting is provided by two sights, a high field of view periscopic unity sight and a 3 to 12 power variable magnification periscopic sight with illuminated reticle. Night sighting is provided by F50 image intensifying tubes mounted in both the periscopic portion of the sight assembly and in the rangefinder. (F50 is part of the Night Vision Generation II image intensifier program discussed in Appendix 3, Part D: Electro-optical Program Night Vision Generation II.) Provision is made for the replacement or augmentation of the image intensifying system with a thermal imaging system when such a system is ready. The sight is arranged so that replacement of the stereoscopic rangefinder with a laser rangefinder system is possible.
Range information from the TPD-2-49 is automatically transmitted to the 7M13 FCS and is included in the gun-follows-sight control scheme: the ballistic solution is continuously updated by the 5E1 and the gun aimed as the range is dialed in. As a result, firing can take place immediately after the correct range is found.
 
2.     
The commander’s hunter-killer cupola with TDD-3 optical complex is provided with a 1-8x variable power periscopic optical system for use under armor. Control is through electric motors and geared drive, and the 125mm gun can be slaved to the sight (commander's override). In combination with the 14.5mm KPVT machine gun, TDD-3 provides light vehicle and anti-infantry capability to 3,000m, as well as hunter-killer and slew-to-cue capabilities. The mount is fully stabilized and is able to be used effectively while on the move, and incorporates F50 NGVII image intensifying tubes for night operations.
 
C.    FCS:
 
1.     List of component systems, their purpose and the basic system architecture.
TPD-2-49 244cm coincidence rangefinder-sight (GCRS) complex TDD-3 Commander’s Independent Rangefinder-Sight (CIRS) complex 7M13 Electronic Fire Control System 5E1 Turret/Weapon Management Computer (TWMC) 2.     Link to Appendix 3- weapon system magic, if you have long explanations about the workings of the system. https://mega.nz/#!EBRiRQ6Q!5wYPI0yDpF_8qGgA5KHUR1cHtbtmdFy8nxn5XOECdHc
 
Fightability:
 
1.     List vehicle features which improve its fightability and useability.
Low Crew Requirements Turret armor defeats >BGM-1 60/160 CE and ≥500mm KE to 161.5° of turret traverse High Degree of Automation Improved battlefield accuracy and see-shoot time through digital FCS Autoloader allows true Fire / Load on the move capability Excellent night-fighting capacity through the provision of Gen-III Equivalent I2 tubes, both in the vehicle and for personnel. Digital systems improve maintenance and wear tracking, allow better supply chain management Power-Pack enables fast maintenance Turret modular armor package design eases growth / upgrades and battle damage repair Semiconductor advances allow rapid development of advanced computing systems Guided KE ramjet round lethal at extended ranges, quite accurate, short flight time Light weight eases infrastructure wear from training maneuvers, increases strategic/operational mobility Small silhouette - Turret exposes same frontal area turned up to 40 degrees off centerline Advanced armor suite and crew Force-Multiplication measures (hard-shell crew helmet, dual-tube night vision devices) Advanced digital radio encryption for safe battlefield communications Text-Messaging through the radio system extends communication range where voice TX is unintelligible Additional Features:
 
Feel free to list more features as you see fit, in more categories.
Crew Comfort
Upgradeability
 
 
 
 
 
 
 
Free expression zone: Let out your inner Thetan to fully impress the world with the fruit of your labor. Kindly spoiler this section if it’s very long.
 

SNVZ design and pre-production staff, including comrade-academicians, comrade-engineers, and comrade-military-technical-advisors. Photo by Comrade Political-Moral Officer Lt. Col Allin Smythee-Redacted, PAFDPMR
 
 

Hakika si Kundi la Dudes Nyeupe (HKDN) Submission: Object 426 "Stumpy"




 
Table of basic statistics:
 
Parameter
Value
 
Mass, combat
 
54.8 mt
 
Length, combat (transport)
 
6.2 m/9.7 m (gun forwards)
 
Width, combat (transport)
 
3.8 m
 
Height, combat (transport)
 
2.6 m (to top of commander's hatch)
 
Ground Pressure, MMP (nominal)
 
114 N/m2
 
Estimated Speed
 
60 km/h on road, 40 km/h off-road
 
Estimated range
 
400 km
 
Crew, number (roles)
 
4 (commander, driver, loader, gunner)
 
Main armament, caliber (ammo count ready/stowed)
 
85 mm L/70 high-pressure gun (30 rounds in protected rack under blow-off panels in turret rear, 5 rounds in ready/emergency racks in fighting compartment)
Secondary armament, caliber (ammo count ready/stowed)
 
7.62 mm coaxial machinegun (1200 rounds)
 
12.5 mm machinegun (1200 rounds)
 
250 mm Large Universal Body (LUB) missiles (4 in armoured boxes on turret sides)
 
Vehicle designer’s notes:
 
HKDN's object 426 (provisional designation "Stumpy", provisional identifier "Xer") is intended to provide mobility, protection and firepower which meets or exceeds requirements at a low weight. It uses proven track, suspension, engine and transmission components, and combines them with innovations in firepower and protection to produce a superior fighting vehicle capable of taking on all comers. 
 
Vehicle feature list:
 
Mobility:
 
1.     Link to Appendix 1- RFP spreadsheet, coloured to reflect achieved performance.
 
2.     Engine- 2x V-10 diesel (based on V-46-6 engine), 32.3 l displacement each, 650HP each, liquid cooled, coolant piped through armoured conduit to radiators in rear.
 
3.     Transmission- planetary, synchromesh, hydraulically assisted (based on T-72), 7 forward gears and 1 reverse gear; engine forward; transmission to rear.
 
4.     Fuel- diesel, 1350 l total capacity, stowage in forward hull and fighting compartment floor, 400 km estimated range, acts as additional armour against frontal attacks and mine blasts.
 
5.     Engine bay is designed so that individual engines can be lifted out as power pack units. Transmission and engines are set up so that the tank can run even if one engine is disabled .
 
6.     Suspension- torsion bar with hydraulic shock absorbers, 20-32 cm travel, 50 cm ground clearance, based on proven design of T-72.
 
Survivability:
 

Layout of armour and protective components:
Dark red - mantlet
Red - frontal arrays
Orange - turret side arrays
Gold - driver's side array
Yellow - fighting compartment side arrays
Green - roof array
Black - fuel
Grey - Automotive components: engines, drive shaft, transmission, radiators
Not shown - 25 mm HHA side skirts, 45mm base armour, turret basket, armoured ammunition stowage, armoured boxes for LUB missiles
 
1.     Link to Appendix 1 - RFP spreadsheet, colored to reflect achieved performance.
 
2.     Link to Appendix 2- armor array details.
 
3.     Non-specified survivability features and other neat tricks - smoke grenades, use of fuel cells and radiators as armour, rear radiator housings double as large    escape hatches for crew.
 
Firepower:
 
A.    Weapons:
 
1.     Link to Appendix 1- RFP spreadsheet, colored to reflect achieved performance.
 
2.     Main Weapon-
 
a.      Smoothbore cannon (510 MPa working pressure)
 
b.      85mm calibre
 
c.    Ammunition -
       Common: 75 x 500 mm composite case (158 mm at base), combustible case wall and steel case stub, 19-21 kg total round weight.
       APHE-FS: 11.4 kg, 1000 m/s, 250 mm RHA penetration at 500 m, 210 mm RHA penetration at 2000 m.
       APCR-FS: 3.2 kg, 1900 m/s, 330 mm RHA penetration at muzzle.
       HEAT-FS (steel liner): 11.4 kg, 1000 m/s, 200 mm RHA penetration.
       HEAT-FS (precision-formed copper liner, precision-formed explosive, wave shaper, improved fuse assembly): 11.4 kg, 1000 m/s, 350 mm  RHA penetration.
       HE-FS: 11.4 kg, 1000 m/s, ~15 mm RHA penetration
 
d.    Ammo stowage arrangement- 30 rounds in 3 linear racks in turret rear. Racks are behind armour and under blow-off panels. 5 rounds in emergency/ready racks scattered around fighting compartment. Racks are motorised to bring rounds forwards to front of rack. Loader accesses rack using motorised door.
 
e.   FCS- gun is electro-hydraulically stabilized in 2 axes (based on T-72). Maximum gun elevation/depression is +20/-5 degrees.
 
f.    The high-pressure 85mm gun allows rapid-fire engagement of multiple targets thanks to its high velocity and lightweight ammunition. Penetration is sufficient to deal with most threats at combat ranges, with high-priority targets being engaged by LUB missiles. A standardised muzzle velocity simplifies aiming when switching ammunition types. The APCR-FS uses an aluminium body, 28x420mm maraging steel core and 13x51mm tungsten alloy tip to provide a high-penetration kinetic round for close-in combat (0-500m). 
 
3.     Secondary weapons-
 
            a.    7.62 mm coaxial machinegun, 1200 rounds
 
            b.    12.5 mm machinegun, 1200 rounds, mounted in rotatable pintle on commander's hatch.
 
            c.     4 x 250 mm LUB missiles (described further in Appendix 3)
 
4.    Link to Appendix 3 - Weapon system magic. This is where you explain how all the special tricks related to the armament that aren’t obviously available using Soviet 1961 tech work, and expand to your heart’s content on extimated performance and how these estimates were reached.
 
B.    Optics:
 
1.     Primary gunsight - stabilized gunner's sight in turret roof. Stabilization is 2-axis, with gun calibrated to sight (described further in Appendix 3)
 
2.    Secondary optics -
      Secondary telescopic mounted coaxial to gun.
      Observation periscopes for commander and loader. Commander's periscope is stabilized.
      Vision blocks in commander's hatch.
 
C.    FCS:
 
1.    Main gun fire control is fairly conventional aside from sight-slaving system. Missile fire control is via main or secondary gun sight, with radar/optical  aiming system mounted coaxial to gun.
 
2.    Link to Appendix 3 -weapon system magic
 
Fightability:
 
1.     Large commander's and loader's hatches improve ingress/egress. Rear hatches allow rapid evacuation and assist in reloading vehicle.
2.     Small size and weight of vehicle increases strategic mobility. Low ground pressure and high power-to-weight ration increases tactical mobility.
3.     Larger number of crewmen and design of engine bays improves serviceability of vehicle.
4.     Smaller main gun increases number of rounds which can be stowed, eases ammunition handling.
5.     LUB missiles provide one-hit-one-kill capability against any and all likely targets. The large, modular design of the missile body allows it to be upgraded over the life of the vehicle.   
6.     The use of known automotive, suspension, gun and optical components based on the venerable T-72 design eases development time and increases reliability.
 
Additonal Features:
 
Additional and optional features are detailed further in Appendix 3. These include a smaller-diameter missile to replace the LUB missile, a 145mm low-pressure gun to replace the 85mm gun, a commander's stereoscopic rangefinder and an addon ERA package.
 

 
Free expression zone:
 
"As leaves gently fall
so too will Cascadia,
thanks to our big stick."
- dedication by the design team of HKDN to Object 426 project
 

HKDN senior design team engineers on Object 426 project. Left to right: Chadina Blake-Smythe, Sora Jina-Bandia and Ukelele Brown-Davis.

oops, inspired by DP 27, M 789 HEDP, OBUS G and the glorious 2S7, Kal corp offers a 12 round, 240mm HEAT autocannon.
(also capable of lobbing a Kleshchevina derivative:  Nuclear shell, if needed.
 
standard shell, M789 but at 240mm dia, so at 1.5x that 360mm penetration plus blast effects
enhanced ported shell Obus G but at 240mm, so at 3.5x thats 840mm penetration plus blast effects
mercury float HEAT shell, single charge at 5x, thats 1200mm penetration plus blast effects
mercury float HEAT shell, dual charge at 5x, thats 800mm precursor + main 1200mm penetration, less blast effects
 
each round is accurate to 3,000 metres, substantially superior to peers.  (tradeoff, penetration for increased accuracy)
 
barrel is mildly rifled, ala M230 LF & AMX 30's gun
 
unfortunately, each shell is just a tad over 100kg, so must be reloaded at depot via crane.  so despite onboard storage being plentiful, official capacity is limited.

it's funny to read about all this "weights!11"
 
for example T-72A hull front (UFP + LFP) 3+ tons IIRC
oplot-m hull front(UFP + LFP+"ERA cassette(without ERA blocks inside)" which is part of UFP) 4966kg
 
CR1 UFP special armour - 1.4 tons (1427 kg) (hull itself with special armour, fuel,ammo,engine etc isnide - 41700kg)
 
 

You mean this passage?
 
"Результаты экспериментальной оценки ударного заброневого действия 120-мм БФС и ОФС калибра 115 и 125 мм по корпусу танка с комбинированной броней показывают, что динамические нагрузки от 120-мм БФС в среднем на 15% ниже, чем от 125-мм ОФС и на 5-10% превосходят 115-мм ОФС. При попадании в лобовую часть башни ди­намические нагрузки от 120-мм БФС в среднем на 15% выше, чем от 125-мм и на 50% больше, чем от 115-мм ОФС."

Pfft, of course not, who would want to squeeze more power out of  it? he he
 
* discreetly crumples paper and throws in trash*

This one time in the Army (I'm required to start all my army stories this way by my wife)....
 
Well I was a driver on an M60A3 when I was in C Co. 1/70 AR in Germany in 1983. We were driving down this tank trail, the lead tank of our platoon, when this crunchy (infantryman) pops out from behind a tree. He was about 50 meters or so down the tank trail when he holds up his rifle across his body in a "Halt!" fashion. I ask my TC if I should stop & he says to keep on driving. The crunchy motions for us to "Halt" a couple more times in an increasingly more aggressive and desperate fashion. When we get about 10 meters from him he suddenly realizes that we aren't stopping and an M16 isn't going to faze us one bit. He dove one way and his rifle went the other as we rolled on pass him. I said to my TC "I wonder what he wanted?" and my TC replied "Who the fuck knows." It isn't a wonder that there's no love lost between DATs and crunchies.

Comrades! The time of your waiting is over! I introduce to you the Sierra Nevada VagonZavod AFV-50 Gun Tank
 

Frontal Dimensions
Frontal Armor
Turret Cheek Armor Array (not to scale)
Top/Side
Vital Statistics(as pictured):
Weight : 52.6 Metric Tons
Crew: 3 (Commander, Gunner, Driver)
Length (hull/OAL gun forward): 6.9m/9.3m
Width: 3.9m
Height: 2.4m
 
Engine: Twin Turbocharged+Supercharged V-12 Diesel (880kw/1180hp)
16.73kw/tonne / 22.4hp/tonne
>70 kph on road
 
Armament:
125mm L/48 auto-loaded smoothbore, 30 rounds ready
1x PKT 7.62x54mm Coaxial MG, 3000 rounds
1x KPVT 14.5x114mm AAMG, 500 rounds in 50 round belts
 
 
 
 

Attention trans ladies, natal-ladies, and other, equally valid genders

 
It is I, Her Gracious and Serene Majesty Queen Diane Feinstein the VIII. I want to talk to you today about bisexuality in ammunition. As you all know bisexuality is the worst possible sexual orientation. Even worse than heterosexuality! For being a bisseuxal means you are at best confused and at worse a traitor to LGBTQQIP2SAA people everywhere. You may ask: Why do we then keep the B in the holy acronym? Because for the same reason the Christians--toxic they may be--still regarded Judas as an Apostle. So that we may be reminded of the failures of our former comrades. Anyway when I mean full caliber, I mean full caliber. For I have seen suggested work arounds and they are the bisexuals of ammunition.

Shaving cream is Haram, as it is a reminder of the days of Patriarchy and toxic masculinity.

Thoughts on the Proper Use of Mechanized Forces in Defense Against the Probably Enemy to the West,  Military-Scientific Thought, Summer 2250
 
Inspired by the current procurement of a new armored vehicle, the author has briefly made a closer study of the terrain on our axes of probable deployment, based in their experience of war in the former Nevada.
 
The elevations in the Northern Theater of Military Affairs, excepting the Columbia Plateau on the former Oregon-Washington border and the Snake River Basin, tend towards above FL040 and in fact are often above FL050.
 
In the Eastern Theater of Military Affairs, the terrain is likewise often above FL040 or FL050 throughout northern Former-Arizona, Former-New Mexico, and Former-Utah. Much of the terrain is above FL040, even the valleys between ridgelines in Former-Nevada, where the remnants of pre-war road networks, arid unforested scrub, and relatively flat ground allow the dushman toyota cavalry to utilize their greater tactical mobility. Worse still would be an engagement in one of the open dry lakes which dot these valleys, where their greater on road/salt flat/lakebed speed enables them to decisively outmaneuver nearly any conceivable tracked vehicle, and attack the sides/rear with their powerful anti-tank means.
 
The peaks which separate these valleys are dominating terrain features, often rising above FL100, however the limited engagement ranges of current fire control systems mean that the ability to observe often the entire >10 mile width of the valley (weather permitting) is hampered by an inability to engage the targets observed, at the least with tank gun fire. An interesting conundrum, no doubt. It is conceivable that the very high caliber guns being pursued by the various parties of this competition may be able to engage such targets, using fire by direct aiming to deliver HE-FRAG, VT, or DPICM against the lightly armored opponents.
 
On the other hand, this job could be better accomplished by heliborne light infantry with long-ranged ATGM and a light, airmobile SPH of c.4.75" caliber able to fire shells to 10 miles (15 with RAP), and effective aviation support (fixed or rotary wing). The low "footprint" of the light infantry soldier, in comparison to the heavy mechanized unit, would reduce sustainment needs relative to armored forces, and reduce the effectiveness of enemy ISTAR means. A mission-tailored task grouping based off of an airborne infantry regiment could take any point in the whole of the Newark and Diamond valleys to the East and West under fire, and direct air and artillery fires against throughout Eureka, White Pine, and Elko counties. A lower profile force could be used, consisting of a network of observation posts with long-range radio systems to plot enemy movements, and use rotary or fixed wing aviation to "herd" or channelize the zealots into coordinated fire-strikes using high power artillery or the weapons of our illustrious rocket-missile troops.
 
Indeed, we need a unique kind of vehicle to support this style of warfare. Tentatively termed "4th Dimensional" (three dementions+3D cross domain personeuver) warfare. While past authors have spoken of similar needs for high speed tracked vehicles for this purpose, due to their higher cross country ability and greater protection than wheeled death traps, their suggestions, derived from the pre-war M113 Gavin APC, would be hopelessly outclassed by the toyota cavalry of the mormonhideen. Thus, inspiration should be taken from the pre-war Combat Vehicle (Recconaissance) Tracked series of vehicles. Of particular note are:
 
FV101 "Scorpion" light tank, so named for the 'sting' of its 76mm gun
 
FV-107 Scimitar Reconnaissance vehicle, armed with a 30mm cannon and named for the famous sword of the Medieval Arab cavalryman who's descendants perfected the toyota cavalry concept.
 
FV105 Sultan Command track, allowing the 4th Dimensional personevuer commander to keep pace with their subordinates even in the highest tempo actions
 
FV102 Striker ATGM carrier, able to sling lethal highly maneuverable missiles from outside enemy gun ranges
 
FV103 Spartan Armored Personnel Carrier, as light and maneuverable as the light infantry inside, with low ground pressure and good power to weight allowing it to be far more of a 'go anywhere do anything' vehicle than the "jeep" of WWII
 
However, the modern requirements of today require a new approach, and some new vehicles. The Light Tank would need increased lethality compared to the pre-war 76mm, for example, and a 4.75" howitzer motor carriage would be required. Further additions may include an engineering vehicle, Anti-Aircraft gun motor carriage, and a mortar carrier.
 
Armed with these new vehicles, light infantry forces would be able to move faster, across, through, and over worse terrain, with heavier weapons, than the mormonhideen. The efforts of the Armored Branch to continue investment in over-complicated expensive vehicles is indicative of the decadence, sedentaryism, and intellectual lethargy which has arisen within the Armored Branch. One might reasonably expect such simple-minded solutions from the robotic money-grubbing degenerates in Cascadia or insane religious fanatics of the tribes who inhabit the Eastern wastes. To see such behavior within the PAF Armored Branch is beyond the pale. Instead of thinking of new ways to skin cats, our fellow officers might best be thinking about how to herd them.
 
-Colonel Miguel Chispas, 1st Tactical Studies Group (Airborne)

Report from Lt. Col. [REDACTED] People's Auditory Forces Directorate of Political-Moral Reliability, Auditory and Political Officer for SNVZ and Military-Industry Liaison Officer for RFP "New Battle Tank"
 
Today, exaltedly equal comrades of multitudinous genders, or none at all, I have wonderful news! We will be discussing the ammunition and developmental armor schemes for the SNVZ AFV-50 project. First the ammunition types. 
 
 
High Explosive-Fin Stabilized The primary general purpose support round for the vehicle, equipped with a standard and super quick fuse setting M/V in excess of 500m/s 6.32kg of TNTe filler High Explosive-Fin Stabilized-Urban A “supercharged” HE-FS round designed for short range demolition work 19.88kg TNTe filler Armor Piercing Capped Ballistic Capped-Fin Stabilized The Primary Anti-Armor kinetic energy round Using highly energetic bursting materials, we have achieved devastating beyond armor effects Meets or exceed armor penetration requirements Armor Piercing High Explosive-Fin Stabilized Base Bleed A long range anti-armor round Base bleed reduces drag (and thetan level) throughout the projectile’s flight to ensure optimal retention of auditory capacity. [AUDITED] [AUDITED] [AUDITED] [AUDITED] Chemical Effects-Anti Tank An anti-tank projectile which generates its armor penetrating effects from chemical energy (explosives) within the round Multi Chemical Effects Shell A heavy chemical effects shell with improved explosive qualities at the expense of range and velocity to improve the numbers of use cases.  
 
These shell types will allow the AFV-50 to engage and defeat all known and planned enemy combat vehicles should they foolishly decide to attack the peace loving peoples’ republic. They are effective at all combat ranges, allowing the gun tank to decisively deconstruct aggressions, micro and macro, and fulfill its combat tasks.
 
 
 
Secondly for today, the SNVZ collective would like to discuss the early development of our armor schemes. While it is a capital offense to shame for weight, it is important to note that later design iterations have exceeded initial goals. Truly SNVZ and the AFV-50 program have been blessed with the bounty of L Ron Hubbard Thought and it is important to recognize that our vehicle is healthy at any size.
 
Recognizing the threat posed by CE warheads, the design team initially investigated the use of large volumes of Glass Textolite, alongside steel. (Fig.1) Unfortunately the thicknesses required were rather extreme, and resulted in deep inefficiencies. 
 
 
Fig.1
 
To compensate for these deficiencies the ratio of steel to textolite was increased, however this also increased the weight. The integration of layers of ceramic and High-Hardness Steel was investigated, however the density/areal density of these packages was deeply unsatisfactory. (Fig.2)
 
 
Fig.2
 
 
At this time the collective investigated various arrangements of so called “Special” or “Composite” armor arrays. They were found unappealing due to the large volumes needed to contain them, and the angles required for best performance. (Figs. 3, 4, and 5)
 
Fig.3
 
Fig.4
Fig.5
 
 
At this time it is unclear what growth potential the Cascadian tandem-HEAT warhead may have, and/or the Mormohideen 2”/4”. These high lethality threat systems may not be able to be defeated without elaborate and economically infeasible exotic armor schemes, in the view of the SNVZ design collective. At this time the SNVZ collective is pursuing further armor concept development, but it appears that the weight and size of tanks must increase drastically before adequate levels of protection are possible. Therefore it appears that the medium tank as it is known, cannot be survivable on the modern battlefield.
 
The Cascadian introduction and adoption of the <<Norman>> series appears in hindsight to be a drastic misstep. The current service variation (NORMAN-A) appears to utilize conventional steel armor materials in a relatively novel layout. However, this is hopelessly outclassed by modern tandem charge CE technology. The Cascadians appear mindless stooges of chauvinist revanchism and warmongering, however despite their perfidy, they are not stupid. They are likely to be investigating the potential for equipping a derivative of NORMAN-A with exotic “special” or “composite” armor systems. They are fools for doing so! To defeat modern tandem-shaped charges would require far too much volume and weight of armor to fit in a traditional “medium” size tank. But the Cascadian dogs have made their bed, and so they shall sleep in it. They may as well have introduced the kite shields and chainmail of its namesake, for the good it will do them. In the modern threat environment, where tandem charge ATGMs outrange the ability of armor to detect and engage them prior to, or even after, launch, the Medium Tank is dead!
 
For this reason, the SNVZ AFV-50 designs have blossomed through the iterative process, between 20 and 25% over the initial predictions. Fortunately there is historical precedent for such a matter. Ancient pre-war historical texts speak of a mightily effective Main-Battle Tank, the first of its kind. During the Second Great War it was created, and grew through its design process it grew to just over 1.25x the initial design goal. The Tank Struggle Vehicle Mark 5, or “Panther”, was widely regarded by the ancient sages of the “AxisHistory” forum as the best tank of this second of the great wars, with armor, mobility, and firepower an order of magnitude above the delicate, vulnerable, underarmed and expensive Medium tank M4 "Ronson". Clearly in light of this the weight gain of the AFV-50 is not of much relevance. Collective efforts of SNVZ to improve armor protection continue, and appear to be reaching some success. The DPRC, guardians of the people and L. Ron Hubbard Thought, as well as our most eminent and wise leadership, the most Gracious and Serene Majesty Queen Diane Feinstein the VIII, require cheap winners, like the TSV Mk.5 "Panther" of old, rather than "expensive losers" like the "NORMAN" or "Ronson"! On this matter, I assure you that the shock-engineers of SNVZ will deliver!

So I think I just T-72'd myself.
 
The backup is looking really, really good.
 
Edit: really, really, really good





It developed from the same philosophy that informed the Big Buoy tank concept, so it's been provisionally dubbed 'Lil Buoy after the pre-war mythological figure.
 
So far the weight estimates have it at 71mt fully loaded, with the same 133mm gun and stretched AVDS-derived engine as the Brick (2950kg dry mass, 1205HP). This gives it a power-to-weight ratio of just under 17HP/mt, which should bump it over the minimum requirements in that department. It also has the same autoloader setup as the Brick, with 20 complete rounds in left side of the turret and another 10 in the left front ammo rack. If needed, the turret crew can now manually serve the gun (although this would obviously only be in case of emergencies or malfunctions).
 
The gun itself fires AP-FS, HE-FS and various types of HEAT-FS. The AP-FS can comfortably exceed the new penetration requirements, to the extent that it can penetrate the turret armour of a Norman-series tank from the front at 2000m.
 
133mm ammunition:
Common: seperate propellant and warhead stages, semi-combustible cases. The propellant stage is 150x1000mm and has a steel case stub. The warhead stage is 133x1000mm bottlenecked to 150mm at the base. Warhead stages may have extra propellant. AP-FS: 34kg, 960m/s, 265mm RHA penetration at 2000m (130mm BR-482B used as reference) HE-FS: 35kg, 835m/s, ~45-50mm RHA penetration HEAT-FS (single, steel cone): 35kg, 835m/s, 430mm RHA penetration HEAT-FS (tandem, copper cone, improved explosives and pressing, higher cone precision, wave shaper, improved detonators etc): 35kg, 835m/s, 230/615mm RHA penetration

*Casually chats about the weather after we 'happen' to bump into each other outside in the park (on a suitably windy day) until I'm certain that nobody else is nearby*
 
I'm fully aware of that. Which is why my 133mm gun, which is what I'm actually putting on my tank right now, does 360mm from 2000m. Which most certainly can kill a Norman, and can probably kill an uparmoured one from a bit closer to even with full-bore stupidity rounds. If you look at my other gun (the 150mm piece) it is and was always optimised for HEAT and the AP round we lashed together barely punches through 200mm on the flat at distance. And even that took a painful redesign of the gun and its cartridge.
 
I'm making other people aware of the minimum level of gun needed so they can go about their day unmolested and then say 'whoops, guess what we just happened to have lying about' when a certain someone succumbs to her increased stress levels and ever-harder-to-hide amphetamine addiction and we can all use finned sabot again.
 
Barring that, a 122mm gun slinging our most up-to-date tandem HEAT-FS can do 200/500mm. Meaning that it will go through a Norman with bolt-on ERA like butter until such time as the perfidious Cascadians add in a NERA interlayer.
 
Finally; if you run the numbers on a fully upgraded Norman (ie: with the bolt-on RHA removed and NERA/ERA added all over the shop) you'll find that nothing short of 550+mm of KE or something like a 190mm diameter tandem HEAT shell has any hope of killing it from the front. Which means that either you sling APFSDS and damn the consequences, or resign yourself to throwing artillery shells at the thing and hope that Her Serene Majesty won't notice that the turret got pulled off by explosive mass rather than any sort of armour piercing effect.

It does.
The mass efficiency numbers given in the OP are the true numbers, the TE numbers are calculated via density.
 

The dianetic firm of Hakika si Kundi la Dudes Nyeupe (HKDN) hears and obeys.
 
On this front, we are delighted to report that our existing Brick junior design, if stretched a little, is capable of firing full-bore AP-FS which will meet the Most Gracious and Serene Majesty's requirements. The barrel has been rebored ever so slightly to 152mm. The propellant section dimensions are now 160x1050mm, while the warhead section is now 152x1050mm, bottlenecked to 160mm at the base. The shell is an entirely new design in line with scientologistic principles (and not, for instance, an ancient BR-540B shell with folding fins welded onto the end) and is expected to penetrate ~200mm at 2000m.
 
In other happy news, the design team has now been certified up to OT-7 thanks to the efforts of Chadina, who successfully petitioned for readjustment of her existing level after a tragic oversight by the relevant auditor in regards to her neuro-gifted tendencies. We trust that with this higher level of Operating Thetans, HKDN's design will more fully embody dianetic principles as it develops further going forwards.
 
 

Oh, I forgot to mention, that comic sans is the now the official font of The Dianetic People’s Republic of California because people with dyslexic enhanced brains can read it better than other fonts.

Attention trans ladies, natal-ladies, and other, equally valid genders

 
It is I, Her Gracious and Serene Majesty Queen Diane Feinstein the VIII, I have been keeping a close eye on this competition and frankly I think we can do better. The Dianetic People’s Republic of California is, after all, the most diverse country in the world. Our diversity quota ensure that only one cishet white male is allowed on your design team. Anyway, I think that we aim for the stars with this new tank and should have a gun that accomplishes that. I am adjusting the requirements: The gun must use traditional AP rounds. Sub-caliber rounds limit our ability to develop high-explosive rounds which, is the main ammo type of our tanks. One of my aides informs me that full-bore AP is more effective against NERA. Also the phallic structure of sub-caliber rounds enforces toxic heteromasculinity. The requirements for this new gun should be around 8 inches of penetration at 1.25 miles at 1200 minutes of an arc. That way this tank can defeat anything those Cascadians Chuds can throw at us.
 
 
 
 

Armour dimensions of the M1A1 in the American Heritage museum (made by a friend):
Hull: 24" or 609.6mm to weldline, rumoured 4" plate behind that (101.6mm)
(Quoting friend)
Seems like there's some empty space there, or he could've missed something, but he agreed that LOS thickness was ~732mm.
 
Turret cheek loader: 29" or 736.6mm perpendicular
From front face to loader's hatch on outside: 78" (he had to hook the tape over, so -3" on the pic you see)  and from loader's hatch on inside to armour = 41", so turret cheek armour from front = 37" or 939.8mm.
 
Turret cheek gunner: 29" or 736.6mm perpendicular, less angled than loader's side, no measurement to commander's hatch and inside to get overal thickness but we assumed  same inner plate thickness.
(maybe the GPS wouldn't be able to fit if it was bigger?)
 
So, hull of M1 (1980) was same thickness and turret most likely the same too (732mm LOS), so how come they gave turret higher protection values than hull?
Seems a bit odd, CIA gave turret 400mm KE (on a turret variant, we don't know which) and 750mm CE, but hull generally gets values of 350mm KE and 750mm CE.....

In any case, reference threat for XM-1 (FSED I think) was XM579E1 (simulating 115mm APFSDS):
Penetration was estimated at 161mm @60° and 1470m/s (either PB or 500m ish).
UK estimated XM-1 at 320-340mm, which coincides with the 115mm at 800-1200m requirement:
As previously pointed out in this thread.
This doesn't talk about the XM-1s before the FSED it seems (why would they talk about an outdated design?).
 
So either CIA was talking about IPM1 turret ("long turret") or they somehow increased KE values for turret while keeping CE the same OR CIA was overestimating own armour?....
 
Anyway,  BRL-1 or early versions of Chobham don't seem to be very good against KE relatively speaking, NERA part itself seems to do very little for KE, simulated ammo (XM579E1) isn't the best against composite materials or complex targets.
Perhaps OG M1 only had ~350mm effective against KE on both hull and turret and IPM1 increased this to 400 or slightly higher, but I don't think that increasing the thickness of the turret with more NERA seems very efficient against KE.
IPM1/M1A1 probably have below 470mm against KE on turret (XM579E1), but maybe more against old slug type APFSDS and definitely less against 80s long rods.
 
This probably led to DU equipped M1s...... to compensate for relatively poor KE protection.

Brick junior gained weight thanks to my poor grasp of maths, and had to be put on a diet:


All-up weight is now 63 tonnes fully loaded, but the ammunition capacity has been lowered to 30 rounds (20 in the primary ammo rack and 10 in the secondary).
 
I'm at the point where I have to decide whether it's worth slimming it down more, going for a bigger engine or starting on Brick senior. With a stretched AVDS-derived mill the all-up weight will probably be close to 70 tonnes, but the power available jumps to 1205hp. This should provide enough grunt to push over the minimum power-to-weight requirements (Brick jr is currently a hair under). On the other hand, it might be worth stretching out properly and getting that 200mm gun I've been wanting to throw into this competition...
 
Edit: here are the rounds for the 150mm smoothbore gun:
 
- Common: all rounds use a seperate tubular 150x1000mm propelling charge section (semi-combustible with a aluminium or steel case stub). Some rounds include extra propellant in the warhead section. Reload rate is approximately 15 seconds per round.
 
- HEAT-FS (HEDP, steel liner): 545mm RHA penetration, 35kg, 950m/s.
- HEAT-FS (single, copper liner): 610mm RHA penetration, 35kg, 950m/s.
- HEAT-FS (tandem, copper liners, high-precision cones + improved pressing): 250/700mm RHA penetration, 35kg, 950m/s.
- HE-FS: 60mm RHA penetration, 43kg, 850m/s.
- APFSDS (maraging steel): 375mm RHA penetration at muzzle, 5.1kg penetrator, 10.4kg total, 1900m/s (note: due to excessive barrel wear, this round is restricted to a maximum of 3 per combat load).
- APFSDS (maraging steel with 20x21mm tungsten carbide tip): 410mm RHA penetration at muzzle, 5.2kg projectile, 10.4kg total, 1900m/s (note: due to excessive barrel wear, this round is restricted to a maximum of 3 per combat load).

So I have been working on a schematic for my hydrostatic transmission.

 
In short, its a hydraulic open circuit. A swash plate pump delivers the power to the system.  A over pressure valve makes sure excess pressure and pressure spikes are vented into the reservoir. The power is split by a distributor valve, acting as a sort of differential lock in the case of a track slipping.  The flow is then regulated by a flow valve  that feeds into a direction changer valve. It feeds the hydraulic motor, also a swash plate motor. In parallel, it has a freewheel valve for when you simply want the vehicle to rotate freely. Both feed back into the reservoir.  A accumulator is also hooked into the high pressure side of the system, providing regenerative breaking and smoothing out the power delivered to and from the motors. 
 
This is just a first draft, I will most likely add more safety features and refine the system. Also it lacks the auxiliary equipment like the suspension.  I am also researching ways of making the pump more efficient past simply running constantly and the excess pressure being vented into the reservoir, wasted. Maybe also making the pump into a starter for the engine.  I also lack the oil cooler. 
 
I have been pondering on using two engines to power the system, one for each motor, or two pumps. The issue would be that power could not be shared between the motors and same with regenerative breaks. 
 
 
 

 
I am also working on the hydropneumatic suspension. This is a schematic for the front and rear most road wheels.  Pressure is feed into a 3/4 valve which is used elevate the roadwheel, a over pressure valve is used to regulate the amount it elevates. Outside of that, the pressure is fed though a over pressure valve that regulates the height of the suspension.  Then a accumulator is coupled in parallel to provide the "springyness". Before the hydraulic cylinder is a flow valve, which regulates the amount of flow, that is used to modify the stiffness of the suspension. 
 
This system is feed by the open circuit shown above in the first picture. 
 
 
And yes, everything is written in Norwegian, because diversity, a core principle of the most supreme state. 
And yes, it was all hand written while cutting steel, because I lack proper schematic software. 
 
 

Yeah, trying being both. I'm surprised I've made this long.