pmaitra
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Good point. Here is an example:You mean a hybrid (Diesel Electric) engines not fully Electric, but Hybrid engines are not new technology, BAe Systems allready developed such engine for AFV's (still US.Army see this as unmature, so they will stick with Diesels for a while). While fully electric vehicle may be usefull for peace time as a service and logistic vehicle in military bases etc.
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Char d' Assaut St. ChammondColonel Jean Baptiste Estienne of the artillery wrote and met Marshal Joffre the CinC of the French Army in December 1915 about requirements for an armored vehicle based on the Holt 75 hp tractor which culminated in the Schneider. He bypassed normal channels, and General Mourret who commanded the Service Technique Automobile responsible for automotive development in the French Army ordered one of his engineers Colonel Rimailho to organize an "official" tank as soon as possible. Again based on the Holt, a prototype was assembled in Feb 1916 by the Compagnie des Forges et Aciéries de la Marine et d'Homécourt (FAMH) at St Chamond under the direction of Lieut. Foughé of the S.T.A. staff.
Designed by Colonel Rimailho, the first prototype was completed February of 1916. This design had a crew of 8 later upped to 9. The St Chamond had a Panhard 4 cylinder 90-hp motor and a Crochat-Collardeau electric drive with a dynamo driving two electric motors, one per track. This design would prove faulty in combat. The tank would often get stuck and the driver would often burn out the electric motors attempting to dislodge it. The prototype had a flat roof and armor down over the tracks, but this limited access for maintenance and became clogged with mud, so the side armor was cutaway to expose the tracks. Original units had 11.5mm of armor. Later units had 17mm of armor to counter the German "K" bullet. Later pitched roofs were added so that grenades would roll off. Track width increased on later models. The Hotchkiss 8-mm machine guns had 7488 rounds. Trench-crossing and parapet-climbing capabilities were 2.45 m (8 ft), 0.38 m (1.25 ft) respectively; gradient 57 degrees, ground clearance 0.33 m (13 in). Combat weight 22,000 kg (48,501 lb.)
While superior in some ways to Schneider e.g. armament disposition and longer tracks, it was top-heavy, unstable and had poor cross-country performance with tendency for nose or tail to catch on parapets or banks. The Germans increased width of their trenches and anti-tank ditches to strand a Schneider or St Chamond attempting to cross.
400 were ordered on April 8, 1916, last one delivered in March 1918. By the Armistice only 72 were serviceable of the 400 built. In 1918 some were converted to supply tank or "chars de ravitaillement" with 75-mm gun taken out and aperture plated over. In 1917 cupolas replaced by plain hatches, and top sloped down either side of centerline. Later a box-shaped cupola added in left front with vision slits and folding sides and a spotlight on front roof.
First used in action on May 5 1917, one company of 16 tanks and two Schneider companies supporting an infantry attack at Laffaulx Mill (Moule de Laffaulx) on 6th Army front, all but one St Chamond got stuck at first line German trench. The same happened in next big French tank attack on the following October when only the Schneiders got past the German trenches. Last big action was the 10th Army counterattack on Siossons-Rheims salient on July 18, 1918 with 216 Schneiders, 131 St Chamonds and 220 Renault FTs used. In the hard fighting of 1918 Schneiders were used in 473 different actions, St Chamonds in 375. The St. Chamond saw action in Russia after the revolution. A few were captured by Red forces and used.
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Source: French Heavy Tanks