Reactive armour
Reactive armour is a type of vehicle armour that reacts in some way to the impact of a weapon to reduce the damage done to the vehicle being protected. It is most effective in protecting against shaped charges and specially hardened kinetic energy penetrators. The most common type is explosive reactive armour (ERA), but variants include self-limiting explosive reactive armour (SLERA), non-energetic reactive armour (NERA), non-explosive reactive armour (NxRA), and electric reactive armour. Unlike ERA and SLERA, NERA and NxRA modules can withstand multiple hits, but a second hit in exactly the same location will still penetrate.
Essentially all anti-tank munitions (with the exception of HESH) work by piercing the armour and killing the crew inside, disabling vital mechanical systems, or both. Reactive armour can be defeated with multiple hits in the same place, as by tandem-charge weapons, which fire two or more shaped charges in rapid succession. Without tandem charges, hitting the same spot twice is much more difficult.
Nera
Nera may refer to:
People
Rivers
Other uses
See also
Nera (Italy)
The Nera is a 116-kilometre (72 mi) long river that flows almost entirely in Umbria, Italy. A tributary to the Tiber, its sources are in the Monti Sibillini, east of Foligno. It flows southward past Terni and Narni. It joins the Tiber near Orte.
See also
Coordinates: 42°26′N 12°24′E / 42.433°N 12.400°E / 42.433; 12.400
Nera (mythology)
Nera (modern spelling Neara) is a warrior of Connacht in the Ulster Cycle of Irish mythology.
One Samhain night when the warriors of Cruachan were feasting, King Aillil offered a prize to any man who was brave enough to put a wicker band around the ankle of a corpse that had been hanged. Because Samhain was considered to be a night when the dead have power, only Nera was courageous enough to volunteer. When he placed the wicker band around the corpse's ankle, it moved and asked him for water. Nera allowed it to climb on his back and he carried it to a house, but flames sprang up around the house when they approached. They tried a second house, which was then surrounded by water. On their third attempt, they were able to enter the house, and the corpse drank three cups of water, spitting the last out on the householders and killing them. Nera returned the corpse to the gallows, but when he went back to court the hall was on fire and all of the inhabitants had been decapitated. He thought he saw an army going into the Hill of Cruachan, so he followed them. Inside the hill, he met a woman of the sidhe who told him that the destruction that he had seen was only a vision of what would happen on the next Samhain night unless the warriors of Medb and Aillil destroyed the Hill of Cruachan and defeated the sidhe army. Nera went back to tell Medb and Aillil what he had heard and found that no time had passed since he had left the hall to put the wicker band around the corpse's foot. Nera warned the people of Cruachan of the danger and then escaped with the woman of the sidhe before Medb and Aillil called on Fergus mac Roich to destroy the Hill of Cruachan.
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