Military Review

The project of self-propelled artillery installation Adlerwerke E-25 (Germany)

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Not all projects of promising military equipment come to practical implementation and operation in the army. In addition, in some cases, successful completion of work can not be guaranteed even by the simultaneous development of several projects. A good example of such results can be considered the German program E-25, during which two variants of a promising self-propelled artillery installation were developed at once. These machines had to have many common features, and also shared a common fate - they never even reached the test.


The prerequisites for the emergence of the E-25 project appeared by the middle of the 1942 year. By this time, the command of the German armed forces came to the conclusion that it was necessary to reduce the range of armored vehicles. On arms at the same time consisted of a large number of different models, which to some extent hampered their parallel operation and maintenance. Based on the results of studying the current situation in the troops and the situation at the front, an original concept of the further development of armored vehicles was created.

A group of specialists led by Heinrich Ernst Knipkamp developed the concept for the further development of military equipment, which involved the creation of machines with certain functions. Based on the existing combat experience, several types of equipment were formed with various functions on the battlefield. It was assumed that the emergence of new technology, originally calculated under the conditions of the theater of military operations, will significantly increase the combat capability of the troops. The result of the new concept was the appearance of a list of requirements for six types of promising armored vehicles. AT stories this family remained under the symbol "E-series" (Entwicklung - "development" or "development").

The project of self-propelled artillery installation Adlerwerke E-25 (Germany)
General view of ACS E-25. Figure Warspot.ru


Among other equipment in the program "E" proposed the creation of medium tank with a combat weight of 25-30 tons and a 75 mm gun. It was planned that in the medium term such a tank would be able to replace the Pz.Kpfw.III and Pz.Kpfw.IV tanks, as well as self-propelled guns based on them and some other equipment. By the name of the series and the lower border of the combat mass, the new project received the symbol E-25. It should be noted right away that this name designated two projects created by different design bureaus. This should be considered to avoid confusion.

An important feature of the program "E" was the approach to the choice of developer companies. The command did not want to burden the additional work of design bureaus, which were already engaged in new projects. As a result, the Adlerwerke company, which was engaged only in the production of various types of equipment, received an order for the development of the E-25 tank. An order for a new project was issued in the middle of 1943. The main designer of the new project was Hermann Klyau.

The project requirements were given a very high level of protection, but the weight of the machine should not exceed 30 t. Such requirements forced Adlerwerke designers to reconsider their views on the design of the prospective machine. The experience of hostilities showed that the SAG StuG III and other similar equipment, thanks to its low silhouette, are distinguished by a high survivability on the battlefield. At the same time, they are quite light and not inferior to tanks in mobility. Thus, in the course of the new project E-25, it was decided to build not a “classic” tank with a swiveling turret, but a self-propelled artillery unit with a gun in the front hull plate. Only such an architecture of the machine made it possible to fulfill all the existing requirements without any special loss in certain characteristics.

Perspective armored vehicle received a new body, the design of which was based on some existing developments. A new design with large angles of inclination of the sheets was proposed, allowing to increase the level of protection for the crew and internal units. A sloping front sheet with a window for an instrument was proposed, from behind and above it should have been in contact with the roof sheets. To preserve acceptable internal volumes and provide the required protection, the roof was proposed to be made of three sheets: horizontal central and inclined front and rear. The sides of the machine should be installed with a slope inward, which allowed the use of internal volumes of the fencing shelves to accommodate various equipment and ammunition layouts. On the frontal part of the body, it was planned to install cast units of the mask of an instrument of complex shape.

The welded body should consist of sheets of different thickness. The top frontal sheet had a thickness of 60 mm and had to be installed at an angle 45 ° to the vertical. The lower frontal part was half thinner. The roof of the hull and the feed should have been made of 20-mm sheets, and the installation angle of the feed part was equal to the angle of the upper front sheet. The side protection was placed on 30-mm sheets. It was assumed that the booking of sheets of medium thickness with rational angles of inclination would provide protection against a number of threats from enemy tanks and artillery. Additional means of protection should have been stealth, due to the small height of the hull, and mobility achieved with the help of a powerful engine.


One of the options for self-propelled guns. Figure Wikimedia Commons


The internal volume of the body of the E-25 was proposed to be used in the same way as in the case of other self-propelled guns of that time. In front of the hull, there was a manned volume accommodating the workplaces of the entire crew and the breech of the gun. Feed was given under the engine. It is noteworthy that in the new project it was decided to abandon the traditional separation of the engine and transmission in different parts of the hull. Instead, it was proposed to shorten the length of the machine by transversely mounting the engine, which made it possible to place the transmission units in the aft compartment of the hull and connect them to the rear wheels.

When searching for a suitable power plant, Adlerwerke engineers had to face certain difficulties. Initially it was assumed that the machine will receive a promising water-cooled engine manufactured by Maybach 400 hp. For various reasons, this motor was not put into a series, which is why the authors of the E-25 project had to choose a new one. Soon there was a proposal to use 350-strong aircraft engine air cooling. However, such a motor could greatly complicate the design of the machine, since it had special requirements for the engine compartment, its ventilation, etc.

As a result, it was decided to equip the new ACS with an engine of the existing model, which is already in serial production. On the stern of the E-25, the Maybach HL 230 P30 carburetor, hp 700 hp, which was already used on several serial armored vehicles, should have been installed. It is noteworthy that when applying the planned engine power 400 hp the power density of self-propelled guns would not exceed 16 hp per ton (with a combat weight at the minimum level of 25 t). The HL 230 P30 engine, in turn, could bring this parameter to the HP 25-28. per ton. Due to this, the maximum speed could reach 60-65 km / h, which was not superfluous in view of the specific views on the protection of the machine.

Adlerwerke engineers developed a new undercarriage based on existing groundwork. On each side of the hull it was proposed to mount five large-diameter road wheels that partially overlapped each other (the so-called Knipkamp suspension). The rollers should be mounted on an individual suspension, apparently based on torsion bars. In front of the hull there were guide wheels, in the stern - leading wheels.


Self-propelled version with howitzer armament. Figure Wot-news.com


The original terms of reference required to equip the machine E-25 75-mm tank gun KwK 43. However, the protection of enemy tanks was improved, which led to a reduction in the potential of this weapon. At a certain stage, it was decided to install the 7.5 cm KwK 44 gun, developed by Krupp and Škoda, on a new ACS. Such an instrument was distinguished by increased characteristics of fire, and also in the future could receive automatic loading. The latter, according to calculations, allowed to do up to 30-40 shots per minute. However, the development of a new gun was delayed, which is why the authors of the self-propelled gun project had to look for alternative options.

According to some information, the possibility of using not only tank guns, but also other systems was considered at the re-selection stage. In particular, the E-25 could become a carrier of a howitzer with corresponding consequences for the method of application of such equipment. The possibility of using an 8.8 cm PaK 43 88 anti-tank gun, which could make a self-propelled gun one of the most powerful tank destroyers, was also tested. Some sources mention that the E-25 with the PaK 43 cannon was designated Panzerjagerwagen and had the additional name Jaguar. It should be noted that the name “Jaguar” is sometimes applied to the entire E-25 project.

For self-defense from infantry or light equipment of the enemy, the E-25 ACS should have received a small turret with additional weapons. On the roof of the hull, with a shift to the stern, it was planned to install a low-height turret with a rifle-caliber machine gun or an 20-mm automatic cannon. With the help of such weapons it was possible to fire at targets that would be inappropriate to destroy the main armament.

The crew of self-propelled guns of the new type was to consist of four people: the driver, the commander, gunner and loader. The driver's seat was located in the front of the case, to the left of the gun. To monitor the road in the front sheet provided viewing devices. The gunner was placed to the right of the gun, which had the guns with aiming drives and a sight. Behind the driver was the place of the commander, and the loader had to be in the rear right part of the habitable volume. To get inside the car was proposed to use a set of hatches in the roof.

By the middle of 1944, Adlerwerke's specialists completed the development of the project for the self-propelled artillery E-25. In the second half of 1944, the command familiarized with the project and gave the go-ahead for the construction of the first self-propelled gun prototypes that were to participate in the trials. The production of experimental machines was entrusted to several enterprises. Thus, the manufacture of armored hulls was assigned to a metallurgical plant in Kattovice (now Katowice, Poland), and the final assembly was to be carried out at one of the enterprises in Frankfurt am Main.


Photomontage, allegedly confirming the participation of E-25 in the battles. Photo Warspot.ru


The manufacture of several armored hulls for E-25 took considerable time, since the plant had to produce other products in the interests of the serial construction of armored vehicles. By the end of January, 1945, several armored units were assembled in Kattowice, which were soon planned to be sent for assembly. However, the collector has not received the required items. 27 January 1945, the Red Army liberated Katowice and seized the plant, along with the corps for serial and experienced armored vehicles.

This is where the story of the E-25 project from Adelwerke actually ended. The war came to an end, and Nazi Germany no longer had the opportunity to reassemble the required corps, build self-propelled self-propelled guns on their basis, test and deploy mass production. In addition, by this time there should have been problems with promising weapons for self-propelled guns. Until the end of the war, German industry failed to complete the development of the 7.5 cm KwK 44 cannon, due to which the E-25 project had to face additional problems and the need to redesign the weapons system.

The further fate of several built hulls for ACS E-25 is unknown. Probably, soon after the discovery they were sent to the smelter as useless. Nevertheless, there is no confirmed legend that at least one new self-propelled gun was built and even participated in the battles. In confirmation of this version, there is a single photograph, which, however, upon closer inspection, is the result of a photomontage. Thus, the history of the E-25 project ended at the end of January 1945, when the German industry lost the hulls for new cars, and with them the hope of building them.

It should be noted that the project of ACS E-25 from the company Adlerwerke can be considered quite successful in terms of implementation and execution of the planned work. Of the six projects of the E-series, only E-25 and E-100 reached the prototype construction stage. However, the construction of both cars was not completed, and the assembled units became trophies of the allies. In addition, the project E-25, created under the direction of G. Klyau, has progressed much further than the alternative development from Porsche, which had the exact same name. The Porsche E-25 project was not even able to exit the design stage.


Based on:
http://achtungpanzer.com/
http://warspot.ru/
https://warthunder.ru/
http://wot-news.com/
Chamberlain P., Doyle H. Complete reference book of German tanks and self-propelled guns of the Second World War. - M .: AST: Astrel, 2008.
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  1. kugelblitz
    kugelblitz April 22 2016 07: 33
    +8
    Still, I wonder why the Germans were so stubbornly holding on to Knipkamp's scheme when, for example, Porsche developed his own scheme with longitudinal torsion bars and quick-detachable carts? Somewhere there was a comparison of the Yagdtiger of two forms and there the advantages of the Porsche suspension were obvious, and the place inside the case did not take ... and the same Elephant, for example, was wassat

  2. Pitot
    Pitot April 22 2016 07: 58
    0
    But wat in such cases, the theory of the controlled development of our civilization probably appears.
  3. Monster_Fat
    Monster_Fat April 22 2016 07: 59
    +2
    The gun is too long and protrudes far beyond the dimensions of the machine. This severely limits maneuverability, especially in settlements, in the forest and on rough terrain.
  4. primers
    primers April 22 2016 10: 14
    0
    But in tanks, the bishop bites very much) In general, the project is interesting and tests would show its effectiveness or vice versa. As for the gun, I agree. With such a length, she would dig the earth.
    1. oborzevatel
      oborzevatel April 22 2016 11: 39
      +2
      Quote: cebadores
      But in tanks, the bishop bites very much) In general, the project is interesting and tests would show its effectiveness or vice versa. As for the gun, I agree. With such a length, she would dig the earth.

      And I generally do not understand the position of the "kartochi", which gash such "wunderwales" in WOT.
      Moreover, it endows them with such "wonderful" characteristics that one wonders - and how else did we win a war against such an enemy?
      1. Alexey RA
        Alexey RA April 22 2016 12: 08
        0
        Quote: oborzevatel
        And I generally do not understand the position of the "kartochi", which gash such "wunderwales" in WOT.
        Moreover, it endows them with such "wonderful" characteristics that one wonders - and how else did we win a war against such an enemy?

        Shhh ... or you’ll call SerB with a file. And he will begin to nerf - so everyone will get it.

        But in general, yes - the invisible flea delivers a lot of fire from the inviz ... bushes + disguise + network - and only by flying off small doses but very often CP it can be understood that the E-25 is somewhere nearby.
        1. Crimea26
          Crimea26 April 22 2016 12: 23
          +2
          We won because there were NO such cars! Little Hetzer was hated by our tankers because of his danger. And the E-25 was much more perfect. Only now the Germans came to the idea of ​​unification when it was already too late. Count how many DIFFERENT machines were in the Wehrmacht! How much effort and opportunity was sprayed on small-scale samples! Series of machines "E" - very interesting and is correct, only time ... time ...
          1. oborzevatel
            oborzevatel April 22 2016 13: 08
            0
            Quote: Crimea26
            We won because there were NO such machines!

            Well, let's add here those Soviet cars that were also designed, and which also did not go into series for objective reasons. Sometimes not even because of their characteristics. But for some reason they are initially positioned in WOT with understated characteristics, in contrast to the same overstated German (French, English, American) ... I am already silent about the impenetrable Japanese "wunderwales".
            1. Crimea26
              Crimea26 April 22 2016 16: 04
              0
              Let's. And then let the paper Germans into the game, but the Soviet - no? Unless the USSR could build its military developments in metal, but the Germans no longer. And ... you will argue that the Soviet optics (and resp. - accuracy) was equal to German? And artillery? And did the Franks-Angles-Amers have no successful designs? And with an overestimation of their characteristics, I would argue.
              The Japanese "elephants" are, I agree, generally insanity))) They are TOO paper for playing .... Like the German heavy PT drummer. Nevertheless, they are all quite amazed by their related classes. You didn't expect a light tank to break through the TT?
          2. svp67
            svp67 April 22 2016 16: 20
            +1
            Quote: Crimea26
            We won because there were NO such machines!

            I do not agree, we would have won the war, even if the Germans had such machines. Indeed, from the middle of the war, our attack aircraft very well dealt with them using PTABs.
          3. james
            james April 22 2016 20: 25
            0
            This is a game and the farther the more bonuses for Tugriks - whoever pays the most will have better tanks. And note the Soviet experimental and tank projects of 1939-1945 are practically absent against the background of how many there were. Probably we buy a little, and play more for free, against the backdrop of Germans, Japanese, Chinese and s.
            And the balancing of what has become our TT development of 1940-1942 put on a par with pidoskimi 1945-49 years.
            Look what they did with Japanese TTs - only eggs are cooler.
        2. oborzevatel
          oborzevatel April 22 2016 13: 13
          -1
          Quote: Alexey RA
          Shhh ... or you’ll call SerB with a file. And he will begin to nerf - so everyone will get it.

          Yes, and so "nerfed" already to the point that I am with ISA with 122 mm. Sometimes I can’t pierce the fourth “panzer” into the lateral projection. Where have you seen this?
          1. Alexey RA
            Alexey RA April 22 2016 18: 40
            0
            Quote: oborzevatel
            Yes, and so "nerfed" already to the point that I am with ISA with 122 mm. Sometimes I can’t pierce the fourth “panzer” into the lateral projection. Where have you seen this?

            Spawn this did not see, and here again! © FAC smile
            After the gusli LT, eating 152 mm shells without damage, what is really surprising.

            However, in 1943, during trials, ours suddenly did not break through the three-ruble note from the A-19.
            Narchik simply opened - on that "three" there were screens that made the BB detonator go off prematurely, so that the shell did not penetrate the main armor.
      2. opus
        opus April 22 2016 17: 33
        +1
        Quote: oborzevatel
        Moreover, it endows them with such "wonderful" characteristics that one wonders - and how else did we win a war against such an enemy?

        Well, in WoT, then Soviet technology brings down all
        1. Alexey RA
          Alexey RA April 22 2016 18: 44
          -1
          Quote: opus
          Well, in WoT, then Soviet technology brings down all

          Heh heh heh ... and how much her nerfs are - just remember at least the quasactank. Or a non-nerfed HF with a shaitan-pipe, knocking out eights and nines in the forehead.
          1. opus
            opus April 22 2016 20: 09
            +1
            Quote: Alexey RA
            Heh heh heh ... how much of her nerfs

            well .. still alive? wink
            As for the "nerfili", there are manAHERS in the potatoes.
            To make a nefig, new cards, something else (night battle, the effect of water on a land mine, BB) there is not enough mind or laziness.
            Scissors and fffpered.
  5. vietnam7
    vietnam7 April 22 2016 14: 42
    0
    The issue with the nerfs of Soviet technology is controversial, of course, the nerfs are doing to balance the forces - who will develop the French branch if worthless tanks appeared after the war? But I want to say thanks to wargaming for off-game work. Articles about armored vehicles appear on the site when a new tank appears in the game - my children start looking for information about it, read articles (and the children read very little now and not only mine :(),
    watch a video about armored vehicles and collect models. Now we finish t 34 samples of 43 years. And you say nerfs, row loot, etc.
    1. yehat
      yehat April 22 2016 15: 26
      -1
      in WOT somehow strange tanks do. most of the technology of running levels on the head inferior in comfort to the same Americans. For example:
      5 level - t67 is one of the best,
      6 level hellcat and t37, and earlier Sherman was imba,
      7 level t20, t29, t25 / at, bulldog, t71,
      8 level is more or less in balance, but the goose is freezing with frontal protection, and t49 is its high-explosive face.
      10 level t110е3, t110е5 just impenetrable cars in the forehead
      Art 10 level - the most powerful with the largest splash.
      1. Crimea26
        Crimea26 April 22 2016 16: 09
        0
        The Americans have always done the forehead of the tower to the maximum - the mentality is such - "shoot at me only from the invulnerable side!" And the case - ugh. Raised on Superman what you want. It is easy to hit the enemy when he is obviously weak ...
      2. Alexey RA
        Alexey RA April 22 2016 18: 46
        -1
        Quote: yehat
        and before, Sherman was an imba,

        With a land mine and cumulus? wink
      3. All terrain vehicle
        All terrain vehicle April 25 2016 09: 32
        0
        Arcade is in Africa arcade, try WAR THUNDER simulator battles, so at least there is an effect of presence, and no markers for you ...
  6. Grigorievich
    Grigorievich April 22 2016 22: 28
    +1
    Quote: yehat
    in WOT somehow strange tanks do. most of the technology of running levels on the head inferior in comfort to the same Americans. For example:
    5 level - t67 is one of the best,
    6 level hellcat and t37, and earlier Sherman was imba,
    7 level t20, t29, t25 / at, bulldog, t71,
    8 level is more or less in balance, but the goose is freezing with frontal protection, and t49 is its high-explosive face.
    10 level t110е3, t110е5 just impenetrable cars in the forehead
    Art 10 level - the most powerful with the largest splash.


    I didn’t understand anything, but can I speak Russian?
  7. Torins
    Torins April 22 2016 23: 00
    0
    Quote: svp67
    Quote: Crimea26
    We won because there were NO such machines!

    I do not agree, we would have won the war, even if the Germans had such machines. Indeed, from the middle of the war, our attack aircraft very well dealt with them using PTABs.

    It is a myth that anti-tank weapons were very ineffective attack aircraft, and they were used against tanks very little. But as a means of spreading the rear, the attack aircraft were delightful, for which the Germans did not like them))
    And about the paper German prodigy in WOT, there are also Soviet ones there, the same KV-5 pulled over the globe, or about 704 with a non-serial gun, very strong cars)
    in WOT somehow strange tanks do. most of the technology of running levels on the head inferior in comfort to the same Americans. For example:
    5 level - t67 is one of the best,
    6 level hellcat and t37, and earlier Sherman was imba,
    7 level t20, t29, t25 / at, bulldog, t71,
    8 level is more or less in balance, but the goose is freezing with frontal protection, and t49 is its high-explosive face.
    10 level t110е3, t110е5 just impenetrable cars in the forehead
    Art 10 level - the most powerful with the largest splash.

    1. - t67 is one of the best light tanks no more))
    2. - Helcat, t37 is very average, and the Sherman was never an imba, moreover, he was a little cactus most of the time))
    3. - t20, t29, t25 worthy of their level and no more (excluding the time when the t29 and t32 had frontal armor clogged), the bulldog sucks, the t-71 is the best light tank but no more.
    4. - The average goose, just many people encounter it every 1000 fights and do not know what to do with it. At the eighth level, all tanks are strong, there is no imb at all, except that the IS-3 is due to the fact that half of the players do not smoke how to pierce a pike nose, the rest do not see anything special in it.
    5. - Americans 10s make their way into the tower with a bang, why would they shoot in the forehead? )))
    1. yehat
      yehat April 25 2016 15: 46
      0
      did you read carefully? I speak COMFORT!
      amers all have good stabilization, aiming angles, as a rule, good mobility (except for some specific cars) and good cross, good vision and sufficient performance characteristics of the gun. No problems.
  8. DesToeR
    DesToeR April 23 2016 00: 50
    +1
    Quote: Grigorievich
    I didn’t understand anything, but can I speak Russian?

    The first adequate person ...
  9. garri-lin
    garri-lin April 26 2016 16: 43
    0
    square 5 please do not touch. the tank is super. like in a game. and in real life (as a project.) at first that it is not stretched. in the game, he is more adequate for pooh (for example, from ISU152) and he will get a sickly tilt. Even the level can be raised to 9. The analogue of 30 will work.