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・ Pyrrorhiza
・ Pyrros Dimas
・ Pyrros Spyromilios
・ Pyrostria socotrana
・ Pyrosulfate
・ Pyrosulphite
・ Pyrosvesteio
・ Pyrotechnic cocking charge
・ Pyrotechnic colorant
・ Pyrotechnic composition
・ Pyrotechnic fastener
・ Pyrotechnic heat source
・ Pyrotechnic incidents
・ Pyrotechnic initiator
・ Pyrotechnic star
Pyrotechnic valves
・ Pyrotechnician
・ Pyrotechnics
・ Pyrotechnics Guild International
・ Pyrotecnico
・ Pyroteuthidae
・ Pyroteuthis
・ Pyroteuthis addolux
・ Pyroteuthis margaritifera
・ Pyroteuthis serrata
・ Pyrotherapy
・ Pyrotheria
・ Pyrotheriidae
・ Pyrotherium
・ Pyroto Mountain


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Pyrotechnic valves : ウィキペディア英語版
Pyrotechnic valves

A Pyrotechnic valve is a one time use propulsion component often used to control propellant or pressurant systems on spacecraft. The device is activated by an electric signal, to fire a small explosive charge which in turn shears away a small flange that initially blocked the flow path of the attached tubing. Another version of a pyrotechnic valve remains in an open position until activated. The pressure from the pyrotechnic charge then forces the flange into a weakened part of the attached tube to block the flow path of the tubing.
These two versions of pyrotechnic valves are referred to as normally-closed (NC) or normally-open (NO) valves, depending on their initial state before initiation of the pyrotechnic charge.〔(【引用サイトリンク】url=http://cs.astrium.eads.net/sp/brochures/valves/Pyrotechnic%20Valve.pdf )
==References==


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「Pyrotechnic valves」の詳細全文を読む



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