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From: |
"Aahz." <ErickKilmer-at-comcast.net> |
Subject: |
Re: mystery tank |
Date: |
Wed, 04 Aug 2004 09:11:36 -0700 |
Reply-To: |
tanks-at-rctankcombat.com |
And a bit more info taken from a tank discussion board.
----
The VT 1-1 and 1-2 were designed as tanks, not as tank-destroyers.
Besides these two vehicles, a number of other twin-gun tanks were made,
called Gefechtsfeld-Versuchsträger 01 to 05. The latter apparently had
dummy guns with laser-simulation equipment and were used to test various
concepts.
While VT 1-1 looks like this:
http://www.panzerbaer.de/types/leopard_vt_1.htm
VT 1-2 looks like this:
http://www.panzerbaer.de/types/leopard_vt_2.htm
While these are probably all GVTs:
http://www.panzerbaer.de/types/pix/leo_vt-2.jpg
http://www.mobilixnet.dk/~mob75281/pic/divs/GVT-04.jpg
http://www.bundeswehr-modellbau.info/images/pmmunster0058.jpg
There was a very good discussion about these vehicles on tanknet a while
ago. Heres a couple of snippets from that discussion:
Stephan
GECONTANKNET posted 08 Feb 2002 04:29 Log:
----------------------------------------------------------------------Some
technical details of the VT 1-2:
General description: Highly mobile twin gun "Kasemattpanzer" with
automatic loader
Developement and construction: MAK Machinenbau GmbH
Crew: Three, on spring suspended platform
Overall length: 9.06m
Hull lenth: 6.69m
Width: 3.54m
Height to turret top: 2.04m
Combat weight: 43.5t
Power/weight ratio: 37kW/t
Ground clearance: 0.45m
Specific ground pressure: 9.86N/cm²
Capability of passing obstacles: 1m height/2m width
Max. Speed f/r: 70/40km/h
Engine: V12/90°, fourstroke multifuel engine with four turbochargers
Manufacturer/type: MTU MB803 Ra-500
Cubic capacity: 45'000cm³
Power output: 1600kW (2200HP)
Auxilliary engines: two 16kW/144V electric engines for silent driving
and traversing without main engine
Mainguns: two 120mm smoothbore
Cadence: 10-12 rds/min per gun
Developement:
1972-1974: Construction of VT 1-1, twin 105mm rifled guns
1974: Trials with VT 1-1
1973-1975: Construction of VT 1-2
1975: Trials with VT 1-2 at KTS 2 (armor school)
1975: Decision to not pursue this concept for a future MBT because of
tactical and technical (cost) problems
Short technical description:
The VT 1-2 is based on the hull of the MBT 70, the hull has been
shortened by 750mm, reducing the number of roadwheels to five.
Behind the frontal armor is the compact crew compartment for the three
men crew (TC, gunner, driver). The TC and gunner each have one
independently stabilized panoramic sight (PERI-R 12), the driver is
placed in the middle between TC and gunner. Behind the crew compartment
is a seperate compartment for the electrical and hydraulical systems.
The engine is placed in the hull rear, the 120mm guns are each placed on
the outer sides above the tracks in a semi-fixed mount, the guns are
stabilized vertically. The guns are traversed by traversing the whole
tank, the guns are fired computer controlled using the
"target-passing-method". The left gun of the VT 1-2 has been equipped
with a six round autoloader for demonstration purposes.
The engine is a high-power Diesel engine with four turbochargers with a
modified transmission from the MBT 70 programme. The VT 1-2 uses a
hydropneumatic suspension which is an improved version of the hydrop
suspension of the MBT 70 programme.
Short assesment:
Compared to current [mid '70s] conventional turret tanks, it was hoped
to achieve the following improvements:
a) Improved firepower:
- by shorter reaction times (redundant use of the guns, no shooting halt)
- by improving the hit probability (double shot or salvo fire)
- by improved kill probability (double shot, high cadence because of
autoloader)
b) Improved mobility:
- by higher power to weight ratio and improved running gear
c) High survivability:
- by using a tactical combat driving method (Wedelfahrt) on enemy contact
- by minimizing the armored volume and improving the frontal protection
The trials of the VT 1-1 and VT 1-2 did show that it would be possible
to realise this concept with a corresponding high degree of technical
expenditures, but that there are certain practical and tactical problems.
My personal conclusion:
This concept would have been a hell of an offensive tank with its
mobility and firepower, but wasn't what the Bundeswehr did need during
the cold war.
Stephan
GECONTANKNET posted 09 Feb 2002 14:01 Log:
----------------------------------------------------------------------
<SNIP: This was a response to another poster>
One of the ideas behind this concept was to convert what you understand
as a weakness into an advantage. Imagine this tank advancing at, oh,
lets say 30km/h. Upon contact, the driver switches to "Wedelfahrt",
while gunner and TC acquire targets, while advancing on this "waving"
course, as soon a gun passes an acquired target, it fires. While driving
like this, the tank is extremely difficult to hit - I don't really would
want to be in a Leopard 2 or in any other conventional tank, if this
beast was advancing on me. Even from a standing position, the concept
would work reasonably well, the high engine power would make turning the
tank really easy (Have you ever seen a Leopard 2 tank turning around its
vertical axis? This already is quite fast, now imagine this concept
vehicle would have had about 50% more power while weighting about 25%
less!), remember, that unlike on the Strv 103 or any other tank with a
(semi-)fixed gun, it would not have been necessary to really aim the
whole tank at the target, rather the driver had just to turn the vehicle
in such a way that the guns line of sight passes the target. Also, the
high firepower (on average, it could fire one gun every three seconds,
it could also fire both guns at once) and good protection would have
still been a major advantage.
Aahz.