Jump to content
Sturgeon's House

Recommended Posts

21 hours ago, S O said:

 

And to settle the question of mobility kill, here are test results of what a tiny 76 mm HESH (whole shell weighs only 5.6 kg, explosive likely well below 1.5 kg) does to an AFV's wheels, idlers and tracks:

http://www.dtic.mil/dtic/tr/fulltext/u2/348021.pdf

That's not "impotent", even at such a relatively small calibre.

That HESH ineffectiveness against AFVs is about penetrating or spalling behind thick layered armour; the effect on stuff on the outside is usually devastating, as is the effect on thin armour (typical BMP/BTR/BMD vehicles) and of course buildings.

 

Thick skirts can protect a running gear against HESH/HEP to some degree, but them getting blown into the running gear can cause mobility kills as well. Hardly any Russian tanks have thick skirts (though Armata has).

 

WO 194-466 is pretty clear that skirting plates very effective protection for the running gear against 120mm HESH. Most russian tanks do not currently have substantial skirting plates, but right now no-one is mad enough to suggest using HESH for anti-armour work - it is not beyond russia's capabilities to add some aluminium sheeting if required.

 

54 minutes ago, LostCosmonaut said:

On an unrelated note, can you define "case volume" for me? I'm in a conversation elsewhere on the internet and need to look smart.

 

Are you planning on sipping tea out of the case?

Share this post


Link to post
Share on other sites
On 9/30/2017 at 4:20 PM, S O said:

 

"I want to see the calculations showing that frontal turret protection against 125mm APFSDS, frontal hull protection against HEAT and engine compartment protection against 14.5mm plus ten degrees of gun depression is possible at 40 tonnes."

MUCH higher protection levels are possible at 50 tons, this has been stated by experts like Hilmes repeatedly. The Japanese Type 10 has a bigger gun and some other weight-increasing extras and still only 44 t empty weight. PLA 125 mm are no doubt the threat that the Japanese looked at.

Besides, I wrote "at about 40 tons". That would be anything from 37-43 metric tons.

 

HAHAHAHAHAHA.

 

Oh man, It's a shame you're probably not coming back, because this in particular is a niche subject I would absolutely horsewhip you on.

 

Share this post


Link to post
Share on other sites

SfYTL.jpg

 

:AHDOTCOM:

 

https://www.motor1.com/news/182984/partisan-one-military-suv-announcement/

Quote

However, Dr. Juri E. Postnikov thinks that there’s an alternative. His Partisan One concept eschews cutting-edge tech for the ability to put huge numbers of them on the road in a quick period of time.

 

Share this post


Link to post
Share on other sites
On 10/3/2017 at 12:24 AM, Toxn said:

Whelp, that was entertaining.

 

I'm still keen on the idea of more, lighter vehicles with decent (but not world-beating) armaments, myself. So it's sad to see this guy inadvertently shit on the concept.

 

Yeah it really is a shame because with as hard as he advocates for such systems and the visceral seething hatred he inspires in pretty much everyone, he could singlehandedly manage to turn people against any and all such concepts.

 

That would be a god damn shame too because i agree with you on how awesome it would be to see such systems adopted since they'd be kinda more workable than the current approach IMO.

 

It's aggravating and a bit distressing that "reformers" like him sprey and sparky have actually advocated for quite a few things that really are needed thrown in alongside their other and primarily mind meltingly stupid and insane inane bullshit, inadvertently and often irreversibly tainting the good ideas just as badly as the actual bad ideas in the process!

 

Ideally and amongst actual professionals and thinking men this taint can be overcome quickly and with ease, but amongst the bureaucrat fobbit and pentagon pussy class such taints serve as the ideal and perfect justification for not doing the right thing!

 

If only the "reformers" weren't so blind to the way they enable the worst excesses of their sworn enemies (the entrenched and all powerful gatekeeping bureaucrats) by tainting the good and necessary things they advocate for mostly as a sort of maskirovka to suck in the unwary and inspire in them a confidence and willingness to trust the reformer which he then uses to overcome your good judgement when the big bag of fucking crazy comes out!

Share this post


Link to post
Share on other sites

New K-2 battle tanks to use imported transmission: arms agency

 

Quote

   SEOUL, Oct. 13 (Yonhap) -- South Korea plans to complete the mass production and deployment of additional K-2 main battle tanks by 2020, three years behind the original target date, due to technical setbacks, the state arms agency said Friday.

   The Defense Acquisition Program Administration (DAPA) initially sought the domestic supply of a powerpack, which comprises transmission and engine, for the second round of mass production, in preference to the German-designed one used for the previous production run, which began in 2013.

   But the indigenous transmission, produced by S&T Dynamics, failed in reliability and durability testing.

 

   In a report to the National Assembly's defense committee for an annual audit, the DAPA said it is pushing for the supply of transmissions from a foreign contractor. It plans to pick a domestically-produced engine for the powerpack.

   "The second mass production and deployment will be completed between 2019-2020" if the plan is approved by a government defense industry committee slated to decide in January next year, added the DAPA.

   The K-2 Black Panther is South Korea's new signature battle tank, and is designed to replace the aging K-1 battle tanks. It is one of the most advanced main battle tanks in the world.

   South Korea hopes to export the K-2, with one tank priced at around US$7.5 million.

 

Share this post


Link to post
Share on other sites

22450142_1364876066975515_41628547144613

 

M-10 tank destroyers of "A" Company, 634th TD Battalion, 1st. Infantry Division firing their 3-inch guns at defenses in Aachen, Germany
October the 14th 1944. 
- (Signal Corps photo from the National Archives.)  (Colorized by Tom Thounaojam from Imphal, India)

 
 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By RedEffect
      Greeting everyone, many of you are familiar with this very tank, and why shouldn't you be, it's a pretty good tank. Nevertheless, I am here to give a better insight into what this tank has to offer.
       
      Where should we start, I usually like to first start off with protection, if you don't mind.
       
      PROTECTION
       
      Unlike T-90A tank which we've seen enough in the past decade, T-90M has new "Relikt" Explosive Reactive Armor (ERA) which offers much better protection when compared to Kontakt-5 present on T-90A tanks.
      On top of having better ERA package, it is also much better covered in ERA, because those silly Shtora-1 dazzlers got removed and no longer take majority of space on the turret's front.
      As you can see, dazzlers took up a lot of space, on top of that, those ERA blocks between the gun and dazzlers could not have been made the same size as regular Kontakt-5 blocks, because of... dazzlers.
      T-90M only retained laser-warning receivers in the place of dazzlers, which gives a much better ERA coverage on the turret.
      As you can also see on the picture, the tank now has a proper gun shield  which should protect the gun mantlet against unwanted visitors (projectiles, ofc).
      The Upper Front Plate is also covered in "Relikt" ERA. 
       
      The side protection of the tank is a bit mysterious, the side of the hull, that is. While the older tanks, such as previously mentioned T-90A used visible ERA plates, there was nothing confusing about them, but there hasn't been any official information about side skirts having ERA, and when you look the skirts from the top, there is nothing to really indicate presence of ERA. 
      I do hope I am wrong about this one, since it would be strange to go from fully protected side armor with ERA panels to simple steel+rubber composition plates, which aren't even thick enough to begin with. I don't know, if someone has reliable information, please let me know, I will edit the post with it.
       
      The side of the turret is protected with 4S24 ERA blocks, side and rear of the engine compartment are protected with cage or "Slat" armor
       
      On top of external protection, T-90M has some cool features to protect the crew. The insides of the tank are covered with non-flammable aramid fabric which serves to catch fragments formed by projectiles or perforated armor. The autoloader's carousel also received additional protection to protect it against additional fragments. Additional protection is also ensured by moving extra ammunition to safe ammo rack with blow-out panels placed on the rear of the turret which is additionally protected with cage armor.
       
       
      FIREPOWER
       
      The tank has 2A46M-5 125mm gun, which is the latest gun from the 2A46M series. The tank received a new feature which was not previously seen on Russian tanks, and that is Muzzle Reference Sensor (MRS) which takes the information of barrel changing its form in cold or hot weather condition and brings them to ballistic computer for more accurate shooting. The ammunition it can fire is of course the best Russia has to offer for the gun, and those are 3BM59 and 3BM60 APFSDS projectiles. There are also reports of 3VOF128 HEF projectile entering service with Russian army, which can also airburst and detonate after penetration. Other projectiles include HEAT and ATGMs.
       
      The Fire Control System is really nice. It of course, has Sosna-U main gun sight, which has automatic tracking ability and uses 2nd generation Catherine FC Thermal Imaging System. The commander has much better time since unlike previous Russian tanks he now has his own Thermal Viewer  connected to the 12.7mm Kord HMG (unlike T-90MS (SM) domestic variant has 12.7mm). CITV incorporates Catherine XP Thermal Imaging System which is 3rd generation TIS, which is better than what most modern tanks have. In addition, both gunner and commander can access back-up sight located next to the Sosna-U sight. Commander has access to new multifunction display which on top of other things, show location of the tank. The tank has YeSU-TZ Battle Management System which allows communication with all units on the present battlefield, making warfare much easier. Another small, but important improvement is the commanders cupola, unlike older T-90A, commander now has full 360deg view with larger vision blocks all around the cupola. In addition, the hatch can be rotated for different purposes and there are 4 cameras for additional 360deg view.
       
       
      MOBILITY
       
      The tank weights 48t and it is powered with new V-92S2F 1130hp diesel engine, with 2000rpm and maximum torque of 4521Nm (pretty neat). In addition to such a good engine, the tank received automatic transmission APP-172  which is VERY NICE. On top of that, the tank received an APU (Auxiliary Power Unit) which reduces the fuel consumption when the tank is idle by powering the electrical systems.

      *WILL CONTINUE WITH THE POST LATER*
    • By 2805662
      The following is derived from various wanderings, discussions, & tyre kicking, and covers an opinion on the forthcoming Land 400 Phase 3 Request for Tender, and is as per June 2018.
       
      General: Phase 2 will significantly shape participation in Phase 3. Costs for the two bidders that weren’t short listed for the Risk Mitigation Activity (GDLS & Elbit Systems) ran into the tens of millions of dollars. Costs for the losing BAE bid could rightly be assessed as double that. Combined with Rheinmetall’s Phase 2-driven “perceived incumbency”, nobody wants to waste money to be a stalking horse on the Commonwealth’s behalf. There is a plausible risk that only Rheinmetall will bid.
       
      Reorganisation of infantry sections: When Land 400 was conceived, Australian infantry sections consisted of two fire teams of four. This drove the initial “eight dismounts” requirement that has subsequently been relaxed. Now comprising three fire times of three, one of those teams will be the vehicle crew, the other two will dismount, for a total of six dismounts. Recent operational experience has highlighted the need for temporary attachment of specialist personnel, so a platform that has some spare seating could still count for it. 
       
      GFE Turrets: One possible tactic that the Commonwealth may seek to use is that of mandating that the Lance Turret, as used on the Phase 2 Boxer CRV, be used as Government Furnished Equipment (that is, purchased from Rheinmetall and provided to suitably configured hulls by competitors). This would simplify the turret training and offer spares commonality across both phases. Perceived savings for “buying in bulk” were (apparently) unable to be realised as Rheinmetall was reluctant to discount its turret. Costs aside, if an offerer has a GFE turret, who owns the systems integration risk? Who does the customer turn to solve potential issues between the turret and the hull when they, the customer, has mandated that particular turret? Commercially, this is a high risk proposition. 
       
      Unmanned turrets: Only GDLS offered an unmanned/remote turret for Phase 2, the Kongsberg MCT-30, as has been adopted in small numbers (81) by the US Army to meet an immediate operational need. A bias against unmanned turrets is unlikely to manifest itself in Phase 3 due to the likely presence of the PSM Puma IFV. Of course, that’ll likely to open the door to GDLS bidding the ASCOD fitted with Elbit’s optionally manned/unmanned MT-30 turret....should they decide to bid at all. 
       
      Likely bidders: This brings us to the inevitable list of potential bidders and their platforms. 
       
      BAE: Unlikely to bid. If they win SEA 5000, that may get them off the bench, as would a requirements set that looks a lot like CV90. In the event that they do bid, the CV90 Mk4 is the most likely platform. 
       
      GDLS: More likely to bid than BAE, but still waiting to see what the RFT looks like. (Tellingly?) Their ASCODs at Eurosatory we’re painted for upcoming European opportunities, not in the distinctive Australian disruptive pattern.
       
      Rheinmetall: likely to offer the Lynx and maybe also the Puma. With the reorganisation of Australian infantry sections (see above) the eight dismounts of the KF41 version of the Lynx are less relevant. Still, the modularity of the KF41 demonstrated at Eurosatory 18 definitely left an impression.  
       
      PSM: As a JV between KMW & Rheinmetall, Puma may be offered separately (unlikely if the Boxer =\= ARTEC in Australia model is followed). In the event that it is offered separately, its high unit cost, without the associated modularity of Boxer, may be a disadvantage. Also, PSM has no experience with industrial partnerships in Australia: a significant disadvantage. 
       
      Hanwha Defense Systems: Korea has been a bit “off” Australian defence opportunities, largely due to the cack-handed way in which the cancellation of the K-9/AS-9 was handled in 2012. The AS-9 was viewed as a loss-leader, primarily as Australia has a reputation of being a discerning (aka difficult) customer. If Hanwha bids their K21, it’ll be interesting to watch. 
       
      Whilst no means exhaustive, the above outlines some less-obvious factors currently at play for the 450-vehicle opportunity that is Land 400 Phase 3.
    • By LostCosmonaut
      Backstory (skip if you don't like alternate history junk)
       
      The year is 2239. It has been roughly 210 years since the world was engulfed in nuclear war. Following the war, the United States splintered into hundreds of small statelets. While much knowledge was retained in some form (mostly through books and other printed media), the loss of population and destruction of industrial capability set back society immensely.
       
      Though the Pacific Northwest was less badly hit than other areas, the destruction of Seattle and Portland, coupled with the rupturing of the Cascadia Subduction Zone in 2043, caused society to regress to a mid-19th century technology level. However, in the early 2100s, the Cascade Republic formed, centered near Tacoma. The new nation grew rapidly, expanding to encompass most of Washington and Oregon by 2239. The Cascade Republic now extends from the Klamath River in the south to the Fraser River in the north, and from the Pacific roughly to central Idaho. Over time, the standard of living and industrial development improved (initially through salvaging of surviving equipment, by the late 2100s through new development); the population has grown to about 4.5 million (comparable to 1950 levels), and technology is at about a 1940 level. Automobiles are common, aircraft are less common, but not rare by any means. Computers are nonexistent aside from a few experimental devices; while scientists and engineers are aware of the principles behind microchips and other advanced electronics, the facilities to produce such components simply do not exist. Low rate production of early transistors recently restarted.
       
      The current armored force of the Cascade Republic consists of three armored brigades. They are presently equipped with domestically produced light tanks, dating to the 2190s. Weighing roughly 12 tons and armed with a 40mm gun, they represented the apex of the Cascade Republic's industrial capabilities at the time. And when they were built, they were sufficient for duties such as pacifying survivalist enclaves in remote areas. However, since that time, the geopolitical situation has complicated significantly. There are two main opponents the Cascade Republic's military could expect to face in the near future.
       
      The first is California. The state of California was hit particularly hard by the nuclear exchange. However, in 2160, several small polities in the southern part of the state near the ruins of Los Angeles unified. Adopting an ideology not unfamiliar to North Korea, the new state declared itself the successor to the legacy of California, and set about forcibly annexing the rest of the state. It took them less than 50 years to unite the rest of California, and spread into parts of Arizona and northern Mexico. While California's expansion stopped at the Klamath River for now, this is only due to poor supply lines and the desire to engage easier targets. (California's northward advanced did provide the final impetus for the last statelets in south Oregon to unify with the Cascade Republic voluntarily).
       
      California is heavily industrialized, possessing significant air, naval, and armored capabilities. Their technology level is comparable to the Cascade Republic's, but their superior industrial capabilities and population mean that they can produce larger vehicles in greater quantity than other countries. Intelligence shows they have vehicles weighing up to 50 tons with 3 inches of armor, though most of their tanks are much lighter.

      The expected frontlines for an engagement with the Californian military would be the coastal regions in southern Oregon. Advancing up the coastal roads would allow California to capture the most populated and industrialized regions of the Cascade Republic if they advanced far enough north. Fortunately, the terrain near the border is very difficult and favors the defender;


      (near the Californian border)


      The other opponent is Deseret, a Mormon theocratic state centered in Utah, and encompassing much of Nevada, western Colorado, and southern Idaho. Recently, tension has arisen with the Cascade Republic over two main issues. The first is the poorly defined border in Eastern Oregon / Northern Nevada; the old state boundary is virtually meaningless, and though the area is sparsely populated, it does represent a significant land area, with grazing and water resources. The more recent flashpoint is the Cascade Republic's recent annexation of Arco and the area to the east. Deseret historically regarded Idaho as being within its sphere of influence, and maintained several puppet states in the area (the largest being centered in Idaho Falls). They regard the annexation of a signficant (in terms of land area, not population) portion of Idaho as a major intrusion into their rightful territory. That the Cascade Republic has repaired the rail line leading to the old Naval Reactors Facility, and set up a significant military base there only makes the situation worse.
       
      Deseret's military is light and heavily focused on mobile operations. Though they are less heavily mechanized than the Cascade Republic's forces, operating mostly armored cars and cavalry, they still represent a significant threat  to supply and communication lines in the open terrain of eastern Oregon / southern Idaho.


      (a butte in the disputed region of Idaho, near Arco)
       
      Requirements
       
      As the head of a design team in the Cascade Republic military, you have been requested to design a new tank according to one of two specifications (or both if you so desire):
       
      Medium / Heavy Tank Weight: No more than 45 tons Width: No more than 10.8 feet (3.25 meters) Upper glacis / frontal turret armor of at least 3 in (76mm) LoS thickness Side armor at least 1in (25mm) thick (i.e. resistant to HMG fire) Power/weight ratio of at least 10 hp / ton No more than 6 crew members Primary armament capable of utilizing both anti-armor and high explosive rounds Light tank Weight: No more than 25 tons Width: No more than 10.8 feet Upper glacis / frontal turret armor of at least 1 in thickness Side armor of at least 3/8 in (10mm) thickness Power/weight ratio of at least 12 hp / ton No more than 6 crew members Primary armament capable of utilizing both anti-armor and high explosive rounds  
      Other relevant information:
      Any tank should be designed to operate against either of the Cascade Republic's likely opponents (California or Deseret) The primary heavy machine gun is the M2, the primary medium machine gun is the M240. Use of one or both of these as coaxial and/or secondary armament is encouraged. The secret archives of the Cascade Republic are available for your use. Sadly, there are no running prewar armored vehicles, the best are some rusted hulks that have long been stripped of usable equipment. (Lima Tank Plant ate a 500 kt ground burst) Both HEAT and APFSDS rounds are in testing. APCR is the primary anti-armor round of the Cascade Republic. Either diesel or gasoline engines are acceptable, the Cascade Republic is friendly with oil producing regions in Canada (OOC: Engines are at about a late 1940s/early 50s tech level) The adaptability of the tank to other variants (such as SPAA, SPG, recovery vehicle, etc.) is preferred but not the primary metric that will be used to decide on a design. Ease of maintenance in the field is highly important. Any designs produced will be compared against the M4 Sherman and M3 Stuart (for medium/heavy and light tank), as these blueprints are readily available, and these tanks are well within the Cascade Republic's manufacturing capabilities.  
       
       
       
       
    • By Sovngard
      Meanwhile at Eurosatory 2018 :
       
      The Euro Main Battle Tank (EMBT), a private venture project intended for the export market.
       


×