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Mighty_Zuk

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  1. Tank You
    Mighty_Zuk got a reaction from Bronezhilet in The M4 Sherman Tank Epic Information Thread.. (work in progress)   
    Another Israeli variant of the good ol' Sherman. 
    In 1958, Isaac Jacobson, commander of the 2nd maintenance center in Tel Hashomer, proposed to shorten the Sherman (I don't know which variant) by 30 centimeters, to make its silhouette somewhat closer to that of the T-54.

     
    The new tank was called 'Degem Yud' (Model Yud). Yud is a Hebrew letter that sounds somewhat like Yehudi (Jewish), which symbolizes the circumcision the tank underwent.
  2. Funny
    Mighty_Zuk got a reaction from Karamazov in Tank Myths   
    Are you talking heresy again?
  3. Tank You
    Mighty_Zuk got a reaction from Bronezhilet in GLORIOUS T-14 ARMATA PICTURES.   
    Your username definitely checks out.
  4. Metal
    Mighty_Zuk reacted to Monochromelody in Tank neutral steer capability   
    The neutral steer, or pivot steer, means the tank drive one track forward while the other track backward, to perform a turn-on-spot. 
    The very first tank with neutral steer, believe it or not, is the German A7V in WWI. 

    Here is the transmission of A7V. 

    The transmission incorporate two independent gearbox, each connected to a 100-hp engine. The gearbox use clash gears to select speed, and bevel gear to select forward or reverse. It's easy to perform a neutral steer. 
     
    Those tanks with electric transmission(St.Chamond, Porsche Tiger, etc.) can easily perform neutral steer, for their twin driving electric motors can rotate in opposite direction. And tanks with twin driving hydraulic motors(Panzer IV mit Hydrostatischem Antrieb) can neutral steer in a similar manner. 
     
    As mentioned above, the simplest way to neutral steer is to have seperated gearboxes or sub-transmissions driving both tracks. US airborne tank M551 Sherridan and Ukraine T-84 Oplot are modern approach of this manner. Althought they neutral steer with tracks driving in different speed, thus they cannot pivot steer precisely on the central spot. 


     
    The neutral steer capability is more common on dual-flow transmission. 
    A dual-flow transmission, or “双流传动” in Chinese, means the power flow from engine into the transmission splitted into driving power flow and steering power flow, then they join together with mesh gears or planetaries. Control these power flows allows the driver to change speed and steer left or right. 
     
    The dual-flow principle itself came up even earlier than the tank. The 1899 Vedovelli Priestley electric taxi equipped with double differential steering system, is capable of neutral steering. 

    And the first tank with dual-flow transmission is the Schneider-Renault SRB, then evolved into the Char B1 heavy tank. 


    The Char B1 tank's dual-flow principle is quite simple. The power splitted into two: the driving power flow into gearbox and drive the main differential; the steering power flow into the appareil Naëder, a hydrostatic pump-motor assembly, can rotate on different speed and direction. 

    Char B1 can use appareil Naëder to control its hull howitzer precisly, this principle inspired the Swedish Strv 103 tank. And the US M1 Abrams tanks use a HSU(Hydrostatic Steering Unit) based on the same principle of appareil Naëder. 

    (To be continued)
  5. Tank You
    Mighty_Zuk got a reaction from Belesarius in Tanks guns and ammunition.   
    The UK wants a 'swimmer' round for its 30mm guns. Developed by Nammo, this is an only slightly modified APFSDS - the sharp tip is replaced by a blunt one. 
     

     
    The round is intended for Type 23 frigates, and will replace standard APFSDS rounds as it is considered to have the same penetration power but with an additional role.
     
    Article here:
    https://www.shephardmedia.com/news/imps-news/ausa-2018-30mm-swimmer-round-set-more-uk-trials/
  6. Tank You
    Mighty_Zuk got a reaction from alanch90 in Active Protection System (APS) for tanks   
    Israeli defense writer for news site "IsraelDefense", Ami Rojkes Dombe, brings up a good point in a so-far-hebrew-only speculative article, that the Israeli MoD's project for a joint APS developed by all major gov't owned companies - IAI (radar), IMI (interceptor), and Rafael (electronic and overall architecture), is probably even more dead right now than it was in 2014. 
     
    The history goes a bit like this:
     
    2006 - Rafael and IMI demonstrate their APS in state trials.
    2007 - Trophy is selected to enter service.
    2008 - Trophy enters production.
    2009 - First battalion is fully equipped.
    2014 - IMOD initiates program to develop joint APS by Rafael, IMI, and IAI, with Rafael being the prime contractor.
    2016 - 2 brigades are fully equipped, and preparations made for production for Namers and Merkava 3 tanks.
    2017 - Total of 1,000 new systems are on order until 2027, with an average production rate of 100 vehicles per year.
    ==============================================================================================================================
     
    Now for the future:
     
    2019 - Carmel project ends (cockpit design) and is superseded by Kaliya/Bullet, thus increasing the urgency for next gen APS.
    2021 - Merkava 4 Barack tanks enter service with new APS capable of defeating KEPs.
    2027 - Vehicles developed in the Kaliya/Bullet program enter service with a next generation APS.
     
    So by 2021, which is relatively speaking right around the corner, The IMOD should have an anti-KEP APS already in service.
     
    This puts quite a dent in that goal, but MANTAK can't really be blamed for falling behind schedule. It's very atypical for them. In the worst case, the MoD presents a schedule that is unnecessarily stretched, but MANTAK are known to always deliver.
    ==============================================================================================================================
     
    Back to the speculation part:
     
    The deal was that IMI, IAI, and Rafael will supply a joint APS. It was actually tried before, and failed. The companies did not agree to work together for a whole lot of reasons, mostly related to pride, even though they were government owned companies.
    It was revived, and although nothing new of it came up throughout the years, other than that the Barack will get an anti-KEP APS which is without a shred of doubt a reference at the joint APS, it seems that the MAPS program of the US Armed Forces, along with the financial difficulties of IMI, have made a completion of this project somewhat unlikely.
     
    What we know:
    IMI is now being absorbed into Elbit, with the move perhaps being finalized before the end of 2018 (stock merger in November). Elbit, being a private company, can be far more aggressive in marketing than even Rafael and IMI were known to be, and they are showing that they can definitely swallow entire markets within Israel's defense industries. Rafael and IMI are fiercely fighting against each other in the US, Australia, and all over Europe, instead of working together on offering a joint system that shouldn't be more developmental than the new developmental iterations of the Trophy and Iron Fist. However there is one mitigating factor that should be taken into account:
    The IDF is reportedly testing the IF-LC on the Eitan and D9 bulldozers, which should signal to Rafael that they may want a cooperation after all, to mitigate the threat presented by Elbit.
  7. Tank You
    Mighty_Zuk got a reaction from Molota_477 in Active Protection System (APS) for tanks   
    Israeli defense writer for news site "IsraelDefense", Ami Rojkes Dombe, brings up a good point in a so-far-hebrew-only speculative article, that the Israeli MoD's project for a joint APS developed by all major gov't owned companies - IAI (radar), IMI (interceptor), and Rafael (electronic and overall architecture), is probably even more dead right now than it was in 2014. 
     
    The history goes a bit like this:
     
    2006 - Rafael and IMI demonstrate their APS in state trials.
    2007 - Trophy is selected to enter service.
    2008 - Trophy enters production.
    2009 - First battalion is fully equipped.
    2014 - IMOD initiates program to develop joint APS by Rafael, IMI, and IAI, with Rafael being the prime contractor.
    2016 - 2 brigades are fully equipped, and preparations made for production for Namers and Merkava 3 tanks.
    2017 - Total of 1,000 new systems are on order until 2027, with an average production rate of 100 vehicles per year.
    ==============================================================================================================================
     
    Now for the future:
     
    2019 - Carmel project ends (cockpit design) and is superseded by Kaliya/Bullet, thus increasing the urgency for next gen APS.
    2021 - Merkava 4 Barack tanks enter service with new APS capable of defeating KEPs.
    2027 - Vehicles developed in the Kaliya/Bullet program enter service with a next generation APS.
     
    So by 2021, which is relatively speaking right around the corner, The IMOD should have an anti-KEP APS already in service.
     
    This puts quite a dent in that goal, but MANTAK can't really be blamed for falling behind schedule. It's very atypical for them. In the worst case, the MoD presents a schedule that is unnecessarily stretched, but MANTAK are known to always deliver.
    ==============================================================================================================================
     
    Back to the speculation part:
     
    The deal was that IMI, IAI, and Rafael will supply a joint APS. It was actually tried before, and failed. The companies did not agree to work together for a whole lot of reasons, mostly related to pride, even though they were government owned companies.
    It was revived, and although nothing new of it came up throughout the years, other than that the Barack will get an anti-KEP APS which is without a shred of doubt a reference at the joint APS, it seems that the MAPS program of the US Armed Forces, along with the financial difficulties of IMI, have made a completion of this project somewhat unlikely.
     
    What we know:
    IMI is now being absorbed into Elbit, with the move perhaps being finalized before the end of 2018 (stock merger in November). Elbit, being a private company, can be far more aggressive in marketing than even Rafael and IMI were known to be, and they are showing that they can definitely swallow entire markets within Israel's defense industries. Rafael and IMI are fiercely fighting against each other in the US, Australia, and all over Europe, instead of working together on offering a joint system that shouldn't be more developmental than the new developmental iterations of the Trophy and Iron Fist. However there is one mitigating factor that should be taken into account:
    The IDF is reportedly testing the IF-LC on the Eitan and D9 bulldozers, which should signal to Rafael that they may want a cooperation after all, to mitigate the threat presented by Elbit.
  8. Metal
    Mighty_Zuk got a reaction from Lox in Israeli AFVs   
    One more thing, my dudes. I just found a drill order for tank crews on transporting infantrymen (and if it's a standard drill, it means they're regularly practicing it).
     
    The manual says 1 passenger can board without any modifications.
    3 can board with 1 ammo rack removed.
    And 5 can board with both ammo racks removed.
     
    So all the imaginary numbers suggesting 6 or 8 passengers are simply untrue.
  9. Tank You
    Mighty_Zuk got a reaction from VPZ in Active Protection System (APS) for tanks   
    I think Damian here is confused, or was confused.
    A long while ago, back in 2017, he said there were a total of 6 interceptors, which means 2 in storage and 1 ready per side, which is 3 per side for a total of 6.
    Now he's saying it's 4+1 per side? It's definitely plausible but it's quite confusing.
  10. Tank You
    Mighty_Zuk got a reaction from Belesarius in Israeli AFVs   
    One more thing, my dudes. I just found a drill order for tank crews on transporting infantrymen (and if it's a standard drill, it means they're regularly practicing it).
     
    The manual says 1 passenger can board without any modifications.
    3 can board with 1 ammo rack removed.
    And 5 can board with both ammo racks removed.
     
    So all the imaginary numbers suggesting 6 or 8 passengers are simply untrue.
  11. Tank You
    Mighty_Zuk got a reaction from Belesarius in Anti-air thread: Everything that goes up must come down, and we'll help you go down   
    Stunner fitting inside the launcher of the PAC-3MSE, even with its booster. It could be a pretty serious upgrade to the Patriot system.
  12. Tank You
    Mighty_Zuk got a reaction from EnsignExpendable in The Soviet Tank Thread: Transversely Mounted 1000hp Engines   
    Israel, a very long time ago. 
    Judging by the license plate, the blue car on the left was bought between 1966-1968 in the Tel Aviv district, and was new. The tank was captured in 1967 and repainted in the famous white, as tanks in Israeli captivity for display purposes are typically painted in single bright color schemes. e.g there are 3 SU-100 in Israel bunched up together painted in pink, bright blue, and yellow.
     
    As the car is not labeled a collectors car and due to the typical old coloring of the photo, I assume it was taken not very long since 1967, so I guess it's late 60's to late 70's.
     
    EDIT: This could very well it being transported to Jerusalem for the annual military parade. 
    The IS-3 is known to have taken part in the 1968 parade.
  13. Tank You
    Mighty_Zuk got a reaction from That_Baka in APC/IFV armor in details   
    Most NATO-member-made AFVs, especially for marketing, are made to meet a certain protection level described in STANAG 4569. It basically saves the vehicle manufacturers some of the time and money it takes to determine how much protection is required and where. 
    So you will usually see designs that are made strictly to meet certain levels. The norm is level 6 on the front and level 4 on sides, plus level 4a/b vs mines as armor technology allows more weight savings. 
    But some vehicles do deviate from these standards if the manufacturers are tasked with a requirement above NATO's. The Puma is one example of a vehicle that, as I understand, is marketed with a level 6 protection but can actually go somewhat higher, perhaps even 35mm at short range. Lynx KF41 almost definitely surpasses the STANAG 4569 levels in some areas, in its 50+ ton version.
     
    Many MBTs are capable of shrugging off 35mm shells. I believe all can do so on the turret, while on the hull it would take for most tanks an applique if the tank isn't angled.
    Leclercs and Leopards were built and sold with passive or the so-called semi-reactive armor that can both take such hits and survive consecutive strikes. Merkava tanks are built since early versions with high protection to the sides, and Abrams tanks pack multi-layered ERA on the sides that is capable of defeating such shells, at the cost of survivability of the armor.
    Ariete is an odd one. On one hand, I remember reading it uses large chunks of RAFAEL's ERA, but I don't know how much of the applique is ERA, or whether I read it wrong and it's passive/semi-reactive armor and not ERA. Either way, count it in as a tank that can at least take a couple shots of 35mm.
    T-14 seems to be packing a lot of passive and ERA on the sides, so the chances may not be all too great even after you pass the ERA, as the side skirts may have some passive armor behind the ERA plates.
     
    So overall, you wouldn't gain much from shooting volleys of 35mm at the sides of modern MBTs.
    But what is 99% sure is that no IFV will ever engage an MBT with such a cannon unless it was caught off guard and managed to spot the MBT first but knowing it cannot retreat.
     
  14. Tank You
    Mighty_Zuk got a reaction from Serge in Israeli AFVs   
    From an exhibition:
     
    Namer:
     
    Eitan:
     
    Achzarit (aka 'bolt simulator'):
     
    Puma:
     
    Merkava 4M:
     
  15. Tank You
    Mighty_Zuk got a reaction from Ramlaen in Israeli AFVs   
    From an exhibition:
     
    Namer:
     
    Eitan:
     
    Achzarit (aka 'bolt simulator'):
     
    Puma:
     
    Merkava 4M:
     
  16. Tank You
    Mighty_Zuk got a reaction from LoooSeR in Israeli AFVs   
    From an exhibition:
     
    Namer:
     
    Eitan:
     
    Achzarit (aka 'bolt simulator'):
     
    Puma:
     
    Merkava 4M:
     
  17. Tank You
    Mighty_Zuk got a reaction from VPZ in Israeli AFVs   
    From an exhibition:
     
    Namer:
     
    Eitan:
     
    Achzarit (aka 'bolt simulator'):
     
    Puma:
     
    Merkava 4M:
     
  18. Tank You
    Mighty_Zuk reacted to 2805662 in Land 400 Phase 3: Australian IFV   
    Some answers provided by “the Commonwealth” to clarification questions on unmanned turrets & APS may be of interest. 
     
    On unmanned turrets:
    “A tender proposing an unmanned turret would not be excluded, however,.... there is a high risk that an unmanned turreted IFV would not be shortlisted for Risk Mitigation Activity.”
     
    On APS:
    ”Defence has not yet made a determination as to the preferred Active Protection System (APS) for Land 400 Phase 2 and/or Phase 3 program. Defence has however determined that a ‘curtain-style’ APS will not be pursued for these programs.”
     
     
     
  19. Tank You
    Mighty_Zuk got a reaction from Xlucine in Britons are in trouble   
    And what capabilities exactly does the rendering show that BAE hasn't shown? 
    If we remove the APS for a moment, we can see on both that they have new and modernized dual channel sights, both keep the TOGS' box, both add some form of warning system (if that is what the box w/dome near the gunner's sight on Rheinmetall's rendering is), whilst retaining the same gun.
    Rheinmetall offers a new gun, but that is also not required, just like the APS.
    Thus the only real difference is that Rheinmetall used the TES armor in its rendering, while BAE's model is stripped of all applique armor. 
  20. Tank You
    Mighty_Zuk got a reaction from MRose in Israeli AFVs   
    It will use TopGun, but not exclusively. Even in urban settings there is some room for statistical firing. 
    For the more accurate jobs, the artillery corps will actually prefer to utilize the rocket artillery systems that are already equipped with precision guided weapons.
  21. Tank You
    Mighty_Zuk got a reaction from VPZ in Israeli AFVs   
    Take that, my dudes:

     
    Also, apparently the Ofek is just an armored relay station between the maneuvering forces and the mobile command center.
     

     
    Source:
     
  22. Tank You
    Mighty_Zuk got a reaction from Adraste in Israeli AFVs   
    Take that, my dudes:

     
    Also, apparently the Ofek is just an armored relay station between the maneuvering forces and the mobile command center.
     

     
    Source:
     
  23. Tank You
    Mighty_Zuk got a reaction from LostCosmonaut in The Space Exploration Achievements Thread   
    IAI releases these 2 documents in 30th anniversary of the Ofeq-1 satellite, which was Israel's first satellite and used for intelligence gathering.
     

     

  24. Tank You
    Mighty_Zuk got a reaction from VPZ in Active Protection System (APS) for tanks   
    A little on the Iron Fist APS from a new press release:
     
    http://www.imisystems.com/wp-content/uploads/2018/07/Iron-Fist-Full-spectrum-Active-Protection-System_מעוצב.pdf
     
    Apparently the Iron Fist has a stealth mode in which the radar 'wakes up' when its optical sensors detect a threat.
     

     

     

  25. Tank You
    Mighty_Zuk got a reaction from Karamazov in Britons are in trouble   
    https://www.shephardmedia.com/news/landwarfareintl/bae-systems-unveils-upgraded-mark-2-challanger-2/
     
    Full text:
     
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