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Carroballista : ウィキペディア英語版 | Carroballista
Carroballista was an ancient, cart-mounted ballista, a type of mobile field artillery. According to the Roman author Vegetius (''Epitoma rei militaris'' II.25), each legion had 55 ''carroballistae'' (one per century) which were arrow/bolt-shooter of the ''cheiroballistra'' type. Vegetius tells us that each ''carroballista'' was carried by mules and operated by one ''contubernium'' (i.e. ten private soldiers commanded by one ''decanus''). Surviving representation of a ''carroballista'' are from the bas-reliefs of Trajan's Column (Scene XL and Scenes LXV/LXVI) and the Column of Marcus Aurelius. == Structure ==
The structure of the carroballista machine is identical to that of the ''cheiroballistra'' or ''manuballista''. It seems so that the technical innovations introduced by the adoption of the ''cheiroballistra'' by the Roman Army at the end of the 1st century AD made the use of the cart possible. In fact, the light but stout metal spring-frame and the wider space in the frontal part of the machine given by the arched strut conferred a greater manoeuvrability to the whole ballista.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Carroballista」の詳細全文を読む
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