Heuschrecke 10 (German Grasshopper)

Discussion in 'Weapons, Technology & Equipment' started by Smudger Jnr, Jan 17, 2010.

  1. phylo_roadking

    phylo_roadking Very Senior Member

    Also...

    The vehicle was intended for use in the Soviet Union to assist the attempted take-over of Moscow.


    Heuschrecke 10 - Wikipedia, the free encyclopedia

    That reads to me as if when designed it wasn't going to be working/fighting in a rural environment - but an urban/suburban one with semi- or fully-metalled roads, concrete paving/open spaces etc...

    I.E. the crew would be plonking the turret down over shellholes in already hardened surfaces, or holes blasted by combat engineers...as the advance INCHED forward day by day :mellow: In the sort of city reduction the Germans expected to fight, the Grasshopper's ability to move forward under fire makes more sense...

    And remember - this is one of the means the Germans used to defend Berlin in 1945! - dismounted tank turrets set over holes in the ground, or tanks dug into streets right down to the top of their hulls ;)

    It's probably only the same design path that produced the Tortoise in the UK for inching through the Siegfried Line....:unsure:
     
  2. Za Rodinu

    Za Rodinu Hot air manufacturer

    ...and we should remember there's an even BIGGER muzzle brake on the Grasshopper's gun than even the one mentioned in the body of the above. It could be that recoil was kept down to a minimum..

    No matter how big the muzzle brake is, this still doesn't look like a recoilless gun to me ;)

    This one I'd love to see being tested :D

    I.E. the crew would be plonking the turret down over shellholes in already hardened surfaces, or holes blasted by combat engineers...as the advance INCHED forward day by day [​IMG]

    Ha! Vindication!

    And yes, no info how the thing would be clamped to the ground. Personal magnetism?

    Still, an open top casemate would be fine for keeping smoke out, but as for keeping grenades, splinters, etc, out I have my doubts :)
     
  3. phylo_roadking

    phylo_roadking Very Senior Member

    No matter how big the muzzle brake is, this still doesn't look like a recoilless gun to me


    I didn't say recoilLESS ;) Historically, the muzzle brake on the 10.5 cm leFH 18M allowed the Germans to fire a HIGHER-pressure charge and thus longer-range shell...so what if they fired the original charge? :) With this even bigger brake and the original charge weight, they'd be experiencing even less recoil ("less", not recoil-free ;))

    Plus, this was a howitzer, after all :) It wouldn't be expected to be firing horizontally or near to horizontal. Firing high-angle the recoil wouldn't somersault it...it would ground it even more firmly!
     
  4. phylo_roadking

    phylo_roadking Very Senior Member

    Still, an open top casemate would be fine for keeping smoke out, but as for keeping grenades, splinters, etc, out I have my doubts


    In the context of a rolling advance, it wouldn't be placed IN the front line, but probably just behind it, providing fire support for the (very slowly) advancing infantry that would have to take the time to clear Moscow building by building.

    Makes sense if the advance into Moscow was envisaged as a slowly-tightening "ring of steel" - not a general Blitzkrieg-style assault; a prefabriated defensive line advancing immediately behind the lead infantry.
     
  5. von Poop

    von Poop Adaministrator Admin

    There's a lot of faith being placed in one line of a Wiki page here ;).
    It's a general gun carrier concept, no more, no less.

    Muzzle brakes are interesting, always staggers me just how much recoil the brake absorbs. If I recall correctly the brake on a Panther's barrel absorbed c.70% of the recoil force... no wonder the manual exhorts the crew so strongly not to fire without it attached.

    Now if we want to go down the route of fixed recoil guns with absolutely no damping or recuperation at all - all forces going through the trunions and into the chassis - the Germans did some interesting work on that, with remarkably successful results. :unsure:
     
  6. Za Rodinu

    Za Rodinu Hot air manufacturer

    I.E. the crew would be plonking the turret down over shellholes in already hardened surfaces, or holes blasted by combat engineers...as the advance INCHED forward day by day :mellow: In the sort of city reduction the Germans expected to fight, the Grasshopper's ability to move forward under fire makes more sense...

    And remember - this is one of the means the Germans used to defend Berlin in 1945! - dismounted tank turrets set over holes in the ground, or tanks dug into streets right down to the top of their hulls ;)

    What makes you think work would be that simple? It's not just plonking any old turret on a shell hole! As I've been saying a dismounted tank turret needs a proper turret ring beneath it, which implies a structure taking time to install.

    Or do you think you can improvise this as the PBI goes inching along?

    pantherturret.jpg

    I don't think you'll believe this was simply dropped into a hole.

    Also I can't really see the advantage over other tried infantry support systems systems such as :

    [​IMG]

    [​IMG]

    [​IMG]

    In the context of a rolling advance, it wouldn't be placed IN the front line, but probably just behind it, providing fire support for the (very slowly) advancing infantry that would have to take the time to clear Moscow building by building.

    Moscow? Aren't we talking about a late '44 system? Why Moscow?
     
  7. phylo_roadking

    phylo_roadking Very Senior Member

    Well, obviously - by the end of January 1942 it's original reason for being had vanished again LOL But as a "general weapons carrier" it might still have had SOME potential use.

    But regarding its reason for being -

    1/ that indicates it didn't think it's current crop of early SPGs were necessarily up to the "job"...

    2/ that the "job" itself - the reduction of Moscow - was envisaged as going to be long, long enough to get a new weapon system into production
     
  8. von Poop

    von Poop Adaministrator Admin

    I say again - the Heuschrecke/Selbstahrlafette 'turrets' are not really demounted tank turrets, they're just Guns, that happen to also be mountable onto a tracked vehicle. -_-
     
  9. phylo_roadking

    phylo_roadking Very Senior Member

    I don't think you'll believe this was simply dropped into a hole


    no...DRIVEN into it then the earth, square setts etc. filled in around it!

    proper turret ring beneath it, which implies a structure taking time to install.

    Or do you think you can improvise this as the PBI goes inching along?

    It doesn't imply a "structure" in the sense of a bunker beneath it as per your illustration, just whatever was "needed" to support it at minimum. I'm quite sure a lot of artillerymen would have preferred the bunker idea - but that wasn't what they were necessarily going to GET in the field every time! :lol:

    As for the Brummbär - different solution with design work begun at a different time using a different weapon!

    Moscow? Aren't we talking about a late '44 system? Why Moscow?

    Work was started in 1941 (some locations say 1942) but as discussed was VERY slow...
     
  10. phylo_roadking

    phylo_roadking Very Senior Member

    Here's another intetresting view of the item...

    [​IMG]

    Specifically - look at the "cart" on the ground it's about to be lowered on to...from Achtung Panzer...

    It had fully rotating turret that could be removed with the use of the crane mounted in the back of the vehicle (by hydraulic mechanism or by hand). Turret could be removed and mounted on the wheeled cart/carriage (carried on the vehicle) and moved to a designated position.


    Look closely at the frome of the "cart" - there's no turret ring on there!

    We "know" it was fully traverseable" when ON the tank - but did it achieve this just by sitting in an adapter that sat in the ring?

    Or maybe - did the ring + adapter detach WITH the turret? ;) There's 10-12 inches of SOMETHING below the hull-line of the turret...

    We could really do with a schematic...
     
  11. phylo_roadking

    phylo_roadking Very Senior Member

    And look again at the pic above...

    It had fully rotating turret that could be removed with the use of the crane mounted in the back of the vehicle


    Yes, it had a turret that could be turned to the rear for dismounting...

    But we DON'T know that it could be actually fought on the tank in any traverse position ;)
     
  12. von Poop

    von Poop Adaministrator Admin

    By coincidence (I think), someone told me a couple of days ago that he'd pottered onto a report on the captured Heuschrecke on one of his many trips to the National Archives.
    He just sent me a couple of pictures from it, one of which is the cartoon-like illustration that I posted above as also found in Spielberger.
    The other, is this fine illustration, that I'm pretty sure I've never seen before:

    heuschrecke-from-brian.jpg

    Gun drops into frame/carriage (Spielberger says dismantle-able into four parts), presumably clamps on allowing traverse (doesn't have to be powered or fancy), fit wheels to the carriage, or bang a few spikes into the ground (like the cruciform mounts) - job done.

    Cheers to my benefactor!.
    My continued guilt at not visiting the NA builds yet further.
     
    Last edited: Jul 3, 2017
  13. phylo_roadking

    phylo_roadking Very Senior Member

    or bang a few spikes into the ground (like the cruciform mounts) - job done.


    ...or screw-in ground anchors.

    And in THIS impression there's a MUCH bigger "spigot" coming out of the tank hull attached to the bottom of the turret ;)
     
  14. phylo_roadking

    phylo_roadking Very Senior Member

    Hey, I've just noticed something....have to do some photoshop work, back in a mo...
     
  15. phylo_roadking

    phylo_roadking Very Senior Member

    Take a look at THIS -

    [​IMG]

    The wheels don't attach to the "CART" :mellow:

    [​IMG]

    ...they attach to the TURRET on those brackets! ;)

    Therefore the "cart" HAS no real function at all EXCEPT as a ground anchor/mount! :unsure:
     
    von Poop likes this.
  16. von Poop

    von Poop Adaministrator Admin

    Another remarkable image from the stuff sent to me:
    heuschrecke-15--web.jpg
    Model/concept drawing of the 'Heuschrecke 15', according to Spielberger this was envisioned with a 15cm sFH43, or 12.8cm K43.

    I'm sure I've never seen it illustrated before.
    Lots more unfamiliar vehicles in the booklet... I can feel a thread coming on.
     
    Last edited: Jul 3, 2017
  17. Gerard

    Gerard Seelow/Prora

    Very strange altogether.........Thank god they devoted time and effort to flights of fancy like this!
     
  18. Smudger Jnr

    Smudger Jnr Our Man in Berlin

    Adam, Phylo,

    Really interesting reading and thanks for the great pictures.



    [​IMG]



    [​IMG]

    You can see from the left and right views that the frame parts were carried on the outside of the lifting arms.

    Regards
    Tom
     
  19. phylo_roadking

    phylo_roadking Very Senior Member

    In a way, the concept DOES make a bit of sense - when you remember it's a "complete" weapon system, the "carrier" when deployed ALSO is it's own schlepper :unsure:

    But there's a suprising and interesting point of failure in it. Yes, it would be great for deploying infantry support howitzer capacity right forward to close-in behind the infatry in an heavy-fire environment...

    But look at the actually deployment process! :mellow:

    X-number of crew members have to dismount, unbolt and assemble the cart, then climb on the hull and rig up the chains, then winch up the "turret" and along its rails, then lower it...attach the wheels....drop it on down into the cart...

    THEN when deployed, open the butterfly-wings of the splinter shielding and crew the gun...

    So it gets you safely INTO the combat area - but after THAT....! :rolleyes: All that standing around and winching and assembling...

    The HUMAN element in the system is a bit bloody vulnerable!!! :lol:

    So - depends on your point of view; the obvious advantages are -
    1/ dual purpose vehicle, greatly reducing the cost of creating a full artillery train
    2/ all-terrain deployment
    3/ armoured carrier protecting crew during movement forward...through an enemy's heavy tac-air support?

    But the obvious disadvantages are -
    1/ the cost - it's another tank hull lost what could BE a tank or be used for a TRUE SPG or StuG
    2/ vulnerability of the gun crew during deployment and operation
    3/ limited applications

    But there are hidden advantages ;) It allows the Germans to KEEP on using what was rapidly becoming an underpowered artillery piece that was only being kept in the game by stretching its ability to fire ever-higher-pressure rounds. THIS system, with its armoured carrier, large splinter shields and its forward deployment system....would have allowed the Germans to deploy it CLOSER to the front line to compensate for the range issue.
     
  20. von Poop

    von Poop Adaministrator Admin

    I don't really see it as primarily a forward area device, despite the envisioned AT gun variants.

    More as a different, or more fluid way of moving gun batteries around in terrain unsuited to wheels.
    The gun chosen for the Krupp prototype is more of a 'divisional' support piece isn't it, despite it's frequent use right up at the front?
    LefH18 has a range of nearly 11km, that's not automatically a direct infantry support gun.
     

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