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A thermobaric weapon is a type of explosive that utilizes oxygen from the surrounding air to generate an intense, high-temperature explosion, and in practice the blast wave typically produced by such a weapon is of a significantly longer duration than a conventional condensed explosive. The fuel-air bomb is one of the most well-known types of thermobaric weapons. Most conventional explosives consist of a fuel-oxidizer premix (gunpowder, for example, contains 25% fuel and 75% oxidizer), whereas thermobaric weapons are almost 100% fuel, so thermobaric weapons are significantly more energetic than conventional condensed explosives of equal weight. Their reliance on atmospheric oxygen makes them unsuitable for use underwater, at high altitude, and in adverse weather. They do, however, cause considerably more destruction when used inside confined environments such as tunnels, caves, and bunkers - partly due to the sustained blast wave, and partly by consuming the available oxygen inside. Thermobaric weapons have the longest sustained blast wave and most destructive force of any known explosive, excluding nuclear weapons. There are many different types of thermobaric weapons rounds that can be fitted to hand-held launchers. ==Terminology== The term ''thermobaric'' is derived from the Greek words for "heat" and "pressure": ''thermobarikos'' (θερμοβαρικός), from ''thermos'' (θερμός), hot + ''baros'' (βάρος), weight, pressure + suffix ''-ikos'' (-ικός), suffix ''-ic''. Other terms used for this family of weapons are ''high-impulse thermobaric weapons'' (HITs), ''heat and pressure weapons'', ''vacuum bombs'', or ''fuel-air explosives'' (FAE or FAX). 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「Thermobaric weapon」の詳細全文を読む スポンサード リンク
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