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AH-IV
The AH-IV was a Czechoslovak-designed tankette used by Romania, Sweden and Iran during World War II. The Romanian vehicles saw action on the Eastern Front from Operation Barbarossa to the Vienna Offensive. Twenty vehicles were sold to Ethiopia after the war who used them until the Eighties.
== Description ==
Českomoravská Kolben-Daněk was determined not to repeat the problems of its earlier ''Tančík vz. 33'' tankette and gave the gunner a turret for better observation and all-around fields of fire for its new ''AH-IV'' tankette. It was assembled from a framework of steel "angle iron" beams, to which armor plates between thick were bolted. The driver sat on the right side using an observation port protected by bulletproof glass and an armored shutter. To his right was a small vision slit. Also to his right, in all models except the Swedish ''Strv m/37'', was a light Zbrojovka Brno ''ZB vz. 26'' or ''vz. 30'' machine gun that was usually locked in place and fired using a Bowden cable. The gunner sat on the left and manned a small turret fitted with a ''ZB vz. 35'' or ''ZB vz. 37'' heavy machine gun in a ball mount. Most of the machine gun's barrel protruded from the mount and was protected by an armored trough. He had a large vision port to the right of the machine gun mount in the turret and a small vision slit on the left side of the superstructure. 3700 rounds were carried for the two machine guns. No radio was fitted.〔Kliment and Francev, pp. 109-115〕
The , water-cooled, six-cylinder Praga engine produced at 2500 rpm. It sat in the rear of the fighting compartment and drove the transmission via a drive shaft that ran forward between the driver and commander to the gearbox. Cooling air was designed to draw air in through the commander's and driver's hatches. This had the advantage of rapidly dispersing gun combustion gases when firing, but several disadvantages. The constant draft generated by the engine greatly affected the crew during cold weather, an engine fire would force the crew to evacuate and the engine noise and heat increased crew fatigue. It had a top speed on the road of and a range between . The semi-automatic Praga-Wilson transmission had five forward gears and one reverse gear to drive the forward-mounted drive sprocket. The suspension was a smaller version of that used in the Panzerkampfwagen 38(t). It consisted of four large road wheels per side, each pair mounted on a wheel carrier and sprung by leaf springs. There were two wheel carriers per side. The idler wheel was at the rear and one return roller was fitted. It had a ground pressure of only 0.5 kg/cm2. It could cross a ditch wide, climb an obstacle high and ford a stream deep.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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