- Biển số
- OF-302370
- Ngày cấp bằng
- 20/12/13
- Số km
- 11,354
- Động cơ
- 73 Mã lực
Cụ nói chính xác, thêm một số cái nữa.Theo em con này làm đường cho bộ binh vượt qua vùng lầy lội, cát lún thì hợp lý hơn.
Churchill Mk III and Mk IV AVRE - a double build - part 01
This is my new task:
Build these two british beasts...from AFV Club.
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The Churchill AVRE (Assault Vehicle, Royal Engineers) was developed after the Dieppe raid in an attempt to make combat engineers less vulnerable while they were attempting to destroy enemy defences.
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The AVRE was developed from a suggestion made by Lieutenant J. J. Denovan of the Royal Canadian Engineers, but attached to the Special Devices Branch of the Department of Tank Design. His idea was for a tank with as much of the standard internal equipment as possible removed and replaced with storage space for the sapper's equipment, tools and explosives. The Churchill was chosen because of its combination of a large interior, thick armour and side access door, and a prototype was developed for the Department of Tank Design by the 1st Canadian M E Company.
The crew of six were drawn from the Royal Engineers, except for the driver who came from the Royal Armoured Corps. One of the RE crew was a demolitions NCO sapper responsible for priming the "Flying dustbin" as well as leading or supervising when they dismounted from the tank (easily done through the side hatches) to place demolition charges ("Wade" charges).
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The AVRE had the main gun replaced by a Petard Mortar. This fired a forty pound (18 kg) HE-filled projectile (nicknamed the Flying Dustbin) 150 yards (137 m). The "Dustbin" could destroy concrete obstacles such as roadblocks and bunkers. This weapon was unusual in that it had to be reloaded externally - by opening a hatch and sliding a round into the mortar tube from the hull.
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The 290mm muzzle loading mortar was developed separately, by Colonel Blacker, the designer of the Blacker Bombard, a spigot mortar built for the Home Guard. He was asked to design a version of the mortar that could be mounted on a tank, and produced a mortar that could fire a 40lb high explosive shell known as the Flying Dustbin.
A massive spring soaked up the 20 tons of recoil and used the energy to recock the mortar. At the Hankley Common demonstration this mortar was mounted to a Churchill tanks. After using shells fused for air burst to clear a 28ft wide gap through a minefield, the mortar then fired twelve shells directly at a 6ft thick concrete wall, creating a gap wide enough for a tank.
The two designed were merged to create the AVRE. Around 700 were produced by converting Churchill Mk IIIs and IVs, of which 180 had been completed by the D-Day landing, where they were used by the 1st Assault Brigade of the 79th Armoured Division.
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AVREs were also used to carry and operate equipment such as:
- Bridgelayer - The Bridgelayer conversion was based on a Churchill MK-III or MK-IV. The bridge could carry a 60ft tank or Class 40 wheeled vehicles, and the driver operated the laying mechanism; the only other crew member was the commander.
- Bobbin - A reel of 10-foot (3.0 m) wide canvas cloth reinforced with steel poles carried in front of the tank and unrolled onto the ground to form a "path", so that following vehicles (and the deploying vehicle itself) would not sink into the soft ground of the beaches during the amphibious landing.
- Fascine - A bundle of wooden poles or rough brushwood lashed together with wires carried in front of the tank that could be released to fill a ditch or form a step. Metal pipes in the center of the fascine allowed water to flow through.
- Small Box Girder was an assault bridge that was carried in front of the tank and could be dropped to span a 30-foot (9.1 m) gap in 30 seconds.
- Bullshorn Plough. A mine plough intended to excavate the ground in front of the tank, to expose and make harmless any land mines.
- Double Onion. two large demolition charges on a metal frame that could be placed against a concrete wall and then detonated from a safe distance. It was the successor to the single charge device Carrot.
- CIRD. The Canadian Indestructible Roller Device (CIRD) consisted of two arms attached to the side of the tank, each supporting a heavy roller. The roller was suspended in such a way it could jump in the air and rotate in an arc round the arm when a mine was detonated, thus reducing the chance of the rollers being blown off.
The AVRE played an important part in the success of the British and Canadian landings on D-Day, where their spigot mortar was especially valuable, destroying a number of German strong points, the most famous being the Sanatorium at Le Hamel. They continued to operate successfully during the campaign in north-western Europe, and later versions of the AVRE tank remained in use long after the Churchill had been retired.
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(font: http://www.historyofwar.org/articles/weapons_churchill_AVRE.html
http://en.wikipedia.org/wiki/Hobart's_Funnies)
One of the problems I encountered in researching this project was the lack of photos of the Mk III model in action in WWII. The model Mk IV features numerous photos. These are the pictures that I found of the Mk III (see the Mk III bridgelayer pic above):
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Building the kit:
Many colleagues are surprised that I build my kits in pairs. But I save time and material building two kits simultaneously... Sometimes, we have to wait a glue or a painting to dry, and with two kits on the workbench, I don´t waste time ...
So, let´s go...The kits:
I focused on the Mk IV´s building...
The current stage. There are just a few details to complement the hull now. I'll let the tracks exposed with the suppression of some parts of the fenders...Love the looks "rhomboid" of Churchill with the tracks exposed ...Notice the lowered periscopes in the Mk IV:
Em ngại dịch quá
http://panzerserra.blogspot.com/2012/04/churchill-mk-iii-and-mk-iv-avre-double.html