DarkLabor
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Everything posted by DarkLabor
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- 581 replies
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- leclerc mbt
- vbci
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In the case of the Swedish trials there are quite some infomations to put together in order to understand what happenned there (or could happened). First the tanks used there, are the two first productions tanks (batch 1). These tanks were made as the production lines were being qualified in order to mass produce. The "activation" of those tanks were made at Satory workshop in order to have a decent QA. Second, those tanks were in the UAE right before the Swedish trials, they performed endurance tests in desertic conditions without problems (~ 800km). Both Giat Industries and the "customer" fired the tanks day and night with satisfying results. Third, S1 tanks (at least the first two batches) were known for their engine unreliabilities. Those were a combinaison of multiple sensors that either put the engine in damage control mod (an iron filling sensor in the engine block) or induced an inadequate air pressure in the engine leading to surging (an air temperature sensor). The iron filling sensor was purely removed on later batches due to its uselessness. The air temperature sensor reliability was enhanced. Fourth, from what I heard, the swedish crew sent to train on the Leclerc arrived in winter 1992 where the others arrived during summer 1992. I believe this is linked to the fact that the trials in the UAE were in progress during the summer. But what about the level of proficiency of the crew?
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Here some scans from the Satory VI (1977) catalog : https://imgur.com/a/zfjSNwm
- 581 replies
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- leclerc mbt
- vbci
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Let's start to quick the AMX-56 bullshit out of the window. The french documentary with the original interview of the program manager. I will look for my Satory catalogs for some vintage data.
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- leclerc mbt
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The arrival of Jaguar will not come instantly, there is still room for "operational emergencies"...
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Système de protection EEI pour AMX 10 RCR === IED protection system for AMX 10 RCR
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Well it's just a certain nuance. Obviously there is a stabilisation system but it is limited to the stabilisation of the line of sight (within the sights). The turret itself has no stabilisation system. A stabilisation system uses a set of gyroscopes located at specific points (hull, turret, armament). The angular informations gathered by the different gyros is computed by the FCS which gives a set of corrections to the elevation and traverse mechanism (the most early stab systems where the armament remains to the same position no mater how the tank behaves). In addition the FCS adds on top of this another set of corrections related to the ideal LOF (later stab systems that introduces the concept of correction of the position of the tank). On the Leclerc, the sight being how it is, the number of variables is kept as minimum as possible. You only compute the angular variation between the current LOS and the ideal LOF. The set of values is then dispatched to the "guidance system" (asservissements) which monitors the actual movement of the turret (traverse and elevation) and assess the need to power the electric motors or revert them into generators to brake the movement. In itself the tank knows on its own the position of the differents elements (hull, turret and armament) with the closed loop elevation and traverse. The sight give the angle of the whole. Hope it is clear. It's not a whole lot but we make this distinction.
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The french ones in UAE (Gulf 2005???). The documentary was totally bullshit with russian bias. He also claimed that the emiratis were in love of the BMP-3 (but we know what happenned when they used them in Yemen).
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Just like any contemporary tank, the mirrors are decoupled from the turret/armament in order to offer a stabilised view. As long as the gunner pushes the palmswitches, the turret is "active", the mirror will compensate the movement of the tank. When you release the palmswitches, the mirror will return to the mechanical zero. In the case of this happenning during a reload, where the gun is mechanically locked in a certain position; means that the LOS will move to realign with the gun (the LOF will certainly not move since the palmswitches are the elementary security switches for turret movements).
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The specs required a highly mobile tank capable to destroy any Warsaw pact (PAVA) tanks at long range with a high hit probability on first shot. This led to the crafting of highly precise system. To be honnest with you there is no stabilisation on the Leclerc. The gun is slave to the ballistic computer which computes the ideal LOF from the stabilised LOS. When reloading, the gun goes to the reloading elevation. Meanwhile the LOS is still stabilised to the direction of observation (in the limits of the mirrors amplitude). Unless you release the palm switches, the mirrors go to their mechanical neutral positions. The gunner sight is mechanically mounted to the main armament. When the gun goes up and down; the sight bows up and down. Since the both move along with the exact same angle, boresighting can be done automatically with a deviation measurement laser (AMX 10 RC being the first french AFV to be equiped with such device). Crews do some alignments (what we call "harmonisation" where we keep the parallax in check), but that's not the bullshit stated by Sergei Suvorov where crews were forced to boresight everytime they move their tanks... At the time engineers were open minded on what could replace the classical tank. Once they defined that their platform was still an AFV, they assessed every kind of compromise to take what was the most favorable and compatible to their specs guideline. Fun fact regarding the tracks. They spent quite some time to switch to steel tracks. They initially used the same arrangement as the aluminum alloy tracks (the shape of the rubber trackpads were supposed to reduce the stomping effect). Surprise, surprise, the vibrations at high speed were strong enough to be a handicap. This explains why we transition from V2 (alloy) to V5 (steel). Apparently V4 was also a disappointment. Even with V5 or DST 840 the vibration is quite awkward compared to V2.
