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Luftvärnskanonvagn 90 Teknikdemonstrator 2
Summary
The Luftvärnskanonvagn 90 Teknikdemonstrator 2, abbreviated to Lvkv 90 TD 2, is the second experimental testbed for future developments of the Lvkv 90 featuring mainly new FCS systems. This technology demonstrator was used to trial experimental technology which could come to be given to the regular Lvkv 90 with a later upgrade package, which resulted in the Lvkv 90D. This vehicle would not be something unique in the Swedish tech tree if it was added today, but since Gaijin is considering removing the air tracking on the Lvkv 90C, this vehicle could be added to prevent the capability of the Lvkv 90C from being removed from the Swedish tech tree.
History
Between September 1997 and June 1999, the complete series of the base Lvkv 90 series was delivered, but due to the entire series being delivered in such a short time, the Lvkv 90 hasn’t been able to be given any upgrades to solve problems discovered during the production. Due to the cost of upgrading an entire vehicle fleet in small increments to remedy these issues, it would be a lot more cost-efficient to have a tech demonstrator which is continually upgraded for the main series to be given an expansive upgrade package in the future. For the Lvkv 90, this was the Lvkv 90 TD.
The original Lvkv 90 TD was ordered by the procurement of the Swedish armed forces, Försvarets materielverk (FMV), on the fifth of march 2001. The main upgrades given to the base Lvkv 90 TD were the addition of the LvMÅLS data link system and a rudimentary stabilisation system for the main gun. This vehicle was delivered to the Swedish army from Bofors on the 21:st of October 2002 where it went through tests until the spring of 2003 when a second technology demonstrator, Lvkv 90 TD 2, was put into development between 2003 and 2004 and was delivered back to the Swedish army on the 16:th of April 2004 for further testing.
Lvkv 90 TD 2 with the Lvkv 90 TD 2 development team on a firing range in Ravlunda on the 4th or 5th of July 2004
Later in the spring of 2004, the Lvkv 90 TD 2 was sent to southern Germany for the NATO-led exercise ELITE where it participated to test the new upgrades in a combat environment, which included a brand new IRST system for the gunner and a radar mounted on the gun for measuring the exit velocity of each round. As a result of the Lvkv 9040 TD 2, on the 22nd of March 2016, an extensive renovation of the Lvkv 90 was ordered which included much of the experimental tech included on the Lvkv 90 TD 2. These newly renovated vehicles would be renamed from Lvkv 90A to Lvkv 90D and would be delivered between Q1 of 2019 and Q2 of 2023.
In total the Lvkv 90 TD 2 included:
- The suspension of the Strf 9040B.
- LvMÅDS data link.
- SLPC computer for better coordination of vehicles.
- Reverse camera for the driver.
- RST for the gunner.
- POS 2 navigation system.
- Automatic north-correction for the radar (the radar screen always has north facing up regardless of the direction of the turret).
- Externally mounted coaxial Ksp m/58 instead of the internally mounted Ksp m/39C.
- NBC-proof shell-ejection hatch.
- V 0 -radar mounted on the gun.
Features
Hull
The hull of the Lvkv 90 TD 2 is the hull of the Stridsfordon 9040A with the upgraded suspension of the Stridsfordon 9040B. It would as such have the same stabilisation which is currently present on the Strf 9040 BILL in game. It has a crew of 4 with a gunner and commander sitting in the turret, a driver sitting in the front of the hull, and a radar operator sitting in the back of the hull.
Armaments
The weapon on the Lvkv 90 TD 2 is the Bofors L/70. It is automatically fed its ammunition from 3 8-round magazines located underneath the cannon breach giving it a ready rack of 24 rounds. Underneath the seats of the gunner and commander, there is a bustle that contains 48 rounds of ammunition which are used to reload the three magazines quickly. An additional 162 rounds of ammunition are located in boxes under the turret which are then used to refill the bustle. It has access to four different kinds of ammunition: the SLPPRJ 90 APFSDS-T, the SLSGR 90 HE, KULSGR 90 HE-VT, and the KULSGR 95 LK, internationally known as the Bofors 3P, HE multipurpose round. The KULSGR 95 LK contains 1100 tungsten pellets which are shot out in every direction on detonation and improves the penetration against low-armoured targets
The KULSGR 95 LK has 6 different programmable modes:
- Gated Proximity Mode (GPM): A basic proximity mode, but the proximity doesn’t activate until the projectile is close to the target. This is to prevent the fuze from detonating when passing by objects such as trees. This wouldn’t have much use in War Thunder as proximity fuze ammunition doesn’t detonate on random objects. It could however in rare cases prove to be useful when trying to shoot an enemy aircraft that is close to a friendly aircraft.
- Gated Proximity Mode with Impact Priority (GPMIP): Same as Gated Proximity Mode, but the detonation is delayed by a few metres resulting in the round detonating a lot closer to the target, giving added damage but with a reduced chance of hitting the target.
- Proximity Mode (PM): A regular proximity fuze that detonates when close to an object. Functions like every single proximity ammunition that we have in War Thunder right now. The trigger radius is 10 m.
- Time Mode ™: A regular timed fuze that detonates after a set flight time just like the regular time fuzed we have in War Thunder right now. It can however be set to a varying time setting which makes the rounds detonate after slightly different times to disperse the fragments over a larger area.
- Impact Mode (IM): A regular impact fuze that detonates on impact with any object, would function like a regular HE shell.
- Armour-piercing Mode (APM): Penetrates the target before detonating, letting it shoot through soft targets and act as a form of SAPHE round. Can penetrate > 18 mm of RHA and > 15 mm of concrete before detonating.
The gun has an internal stabiliser which allows for firing on the move at speeds up to 30 km/h like with the Stridsfordon 9040A. In comparison to the regular Lvkv 90, the Lvkv 90 TD 2 has the coaxial machine gun swapped from a Ksp m/39C to a Ksp m/58 machine gun which is mounted on the roof like on the Strf 9040C and Lvkv 90C variants.
Bofors 3P / KULSGR 95 LK
FCS
The Lvkv 90 TD 2 has a PS 95 search radar mounted on the roof. This radar has a max range of 13 km and operates in the I band. It also has an IFF antenna built into it. It is capable of surveilling the airspace above the vehicle, giving early warnings on air threats, and giving target acquisition and target designation. The data from the radar are then relocated to the screen of the radar operator. Other than the radar, the gunner has a Saab UTAAS sight which features a third-generation thermal imager and a laser rangefinder. This sight allows the gunner to engage both ground and air targets. The Lvkv 90 TD 2 also features IRST for the gunner due to a “Tracking chip” being installed into the FCS. It was also given the LvMÅLS data link which allows the vehicle to both receive and send target data for better cooperation between different SPAAs. Another upgrade to the Lvkv 90 TD 2 was the addition of an externally mounted V0-radar above the gun barrel which measures the exit speed of every round and updates the firing solution in the FCS for better accuracy.
In War Thunder
In War Thunder the Lvkv 90 TD 2 may seem entirely useless right now as it practically doesn’t add anything that the Lvkv 90C doesn’t already have. In fact it could even be considered worse since the stabilisation is worse and it doesn’t get the composite screens which may save you from a stray HEAT shell or an autocannon from time to time. This vehicle would though function as a replacement for the Lvkv 90C as Gaijin has explicitly said that they are considering removing the air target tracking from the Lvkv 90C due to it never having IRST irl. This vehicle has that though and could as such be added to have an Lvkv 90 in the Swedish tech tree which can effectively engage air targets until they add the actual air targeting system which the Strf 90s have.
Specifications
General:
- Crew: 4
- Driver
- Gunner
- Commander
- Radar operator
- Weight: 24 000 kg
- Height: 2,71 m (excluding the radar dish)
- Width: 3,17 m
- Length: 6,55 m
- Protection: Low calibre autocannons and heavy machine guns
- Smoke: 6 forward mounted smoke grenades
- Night vision for the driver
Mobility:
- Top speed: 70 km/h
- Gradient: 30°
- Side slope: 30°
- Ground clearance: 450 mm
- Trench: 2,6 m
- Fording: 1,4 m
- Engine: Scania DSI 14 V8 14 litre TurboDiesel
- 550 hp
- 2100 rpm
- Transmission: Perkins X-300
- 4 forward gears
- 2 reverse gears
- Automatic
Armaments:
- Bofors L/70
- Calibre: 40 mm
- Ammunition:
- SLSGR 90 (HE)
- Muzzle velocity: 988 m/s
- Projectile weight: 0,96 kg
- Explosive weight: 0,109 kg
- Explosive type: Torpex
- Fuze type: Contact fuze
- KULSGR 90 (HE-VT)
- Muzzle velocity: 1015 m/s
- Projectile weight: 0,88 kg
- Explosive weight: 0,12 kg
- Explosive type: Octol
- Fuze type: Proximity fuze
- KULSGR 95 LK (Bofors 3P)
- Muzzle velocity: 1012 m/s
- Projectile weight: 0,975 kg
- Explosive weight: 0,12 kg
- Explosive type: PBX
- Fuze type: Programmable
- Gated Proximity Mode
- Gated proximity Mode with Impact Priority
- Proximity Mode
- Proximity radius: 10 m
- Time Mode
- Impact Mode
- Armour-piercing Mode
- SLPPRJ 90 (APFSDS-T)
- Muzzle velocity: 1465 m/s
- Projectile weight: 0,5 kg
- Penetration: 143 mm of RHA @ 0°
- Fire rate: 300 rpm
- Gun elevation / depression: -8° to +50°
- Total ammo count: 234 rounds
- Dual axis stabilisation up to speeds of 30 km/h
- Calibre: 40 mm
- Coaxial Kulspruta m/58 machine gun
FCS:
- Gunner’s sight: Saab UTAAS
- 3rd gen thermal imager
- Laser rangefinder
- Fully stabilised
- Anti-air mode
- Deflection range:
- Elevation: -10° to +45°
- Azimuth ±18°
- Magnification: 8,0x
- IRST
- Radar: PS 95
- Type: Search radar
- Frequency: I band
- Range: 13 km
- Horizontal coverage: Full 360° coverage
- Vertical coverage: 18°
- IFF
- V 0 -radar
- LvMÅDS data link
Sources
History and specifications of the Lvkv 90 TD 2 Pages 21 - 25
History and specifications of the Lvkv 90 TD 2
