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Lightning conductor
| Морской словарь |
A device designed to protect buildings or ships from the destructive effects of lightning. on watercraft, a metal plate (the “lightning protector”) is mounted at the main truck, or high on the superstructure of a vessel that does not have a mast. electrical conductors attached to the device run downward to a grounding conductor in contact with the water. on wooden ships the ground is usually the copper-bottoming, but for an iron or steel vessel it is the hull itself. for small vessels the grounding conductor may be retractable, part of the hull, or attached to a centerboard.
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Conductor, английский
- A substance which permits the flow of current.
- A wire or combination of wires not insulated from one another, suitable for carrying an electric current.
- 1. a substance or object which allows heat, electricity, light or sound to pass along it or through it 2. a tube with a groove in it along which a knife is slid to cut open a sinus
- A thick metal wire, generally of copper, extending from above the main truck downwards into the water, or in the form of a chain with long links. its use is to defend the ship from the effects of lightning, by conveying the electric fluid into the sea.
- A relatively short length of pipe driven through the unconsolidated zone of top soil as the first step in collaring a borehole. also called conductor pipe, stand pipe.
- In petroleum drilling, the piping carried through overburden to bed rock or the first string of casing placed in a borehole.
- The material through which electricity is transmitted, such as an electrical wire, or transmission or distribution line.
- A material used to transfer, or conduct, electricity, often in the form of wires.
- The material through which electricity is transmitted, such as an electrical wire,
- Us term for train staff member whose duties vary with different administrations but who is primarily responsible for train and passenger safety. often also involved with ticket inspection. in uk parlance was often referred to as the `guard` but the same term is now common.
Conductor, английский
Conductor, английский
Conductor, английский
Conductor, испанский
Conductor casing, английский
Steel casing hammered or pushed into place where soil strata are high in gravel and cobble content or where formation strength is low and the bore would be unstable.
Conductor core, английский
The center strand or member about which one of more layers of wires or members are laid helically to form a concentriclay or ropelay conductor.
Conductor failure, английский
Conductor finger, английский
Проводящая
Conductor guide arm, английский
Направляющая штанга колонны направления (служит для ориентированного спуска колонны по направляющим канатам и ввода ее конца в устье подводной скважин
Conductor head, английский
Conductor housing, английский
Головка колонны направления
Conductor pipe, английский
Conductor rail, английский
- An additional rail (or rails) provided on those electric railways where power is transmitted to trains from the track. often referred to as the `third rail` or `current rail` , it is normally at positive potential and is mounted on insulators to the outside of and slightly higher than the running rails. the return of the circuit is via the running rails. the current is collected by the train through `shoes`, attached to the bogies, which slide along or under the rail. varieties of the system include top, side and bottom contact rails. top contact rails are susceptible to ice and snow contamination in cold climates and present a certain risk to persons walking on the track. for this reason, bottom contact rails are preferred for modern systems. illustrations and descriptions here. the continuity of conductor rails must be broken at junctions in the track to allow continuity of the running rails. such `gaps` may cause momentary loss of power to the train. there are cases from time to time of trains becoming `gapped` at complex junctions, i.e. they stall over a gap and have to be rescued by another train. london underground has a fourth rail (negative) for a completely insulated circuit. it is known as a four rail system.
- A rail through which dc electricity is supplied to electric trains operating on the third rail system.
Conductor resistance, английский
Conductor screen of semi-conducting tape, английский
Conductor shielding, английский
A metallic sheath which surrounds an electric conductor. conduit 1. a tube or pipe used to protect electric wiring. 2. a tube or pipe used for conveying fluid. 3. any channel intended for the conveyance of water, whether open or closed.
Conductor string, английский
Conductor 2
Conductor suspension joint, английский
Секция колонны направления для подвеоки головок последующих обсадных колонн
Conductor [oris, m], латинский
Conductor, chofer, испанский
Destructive, английский
- Вредный
- Разрушаемый; выполняемый с разрушением
Watercraft, английский
- Water transport vessels. ships, boats, personal water craft, etc.
- [1] inclusive term for any boat, ship, or other waterborne vessel. [2] the art of sailing or boating.
Superstructure, английский
- The parts of the ship or a boat, including sailboats, fishing boats, passenger ships, and submarines, that project above her main deck. this does not usually include its masts or any armament turrets.
- Надстройка, надпалубные сооружения; судовые
- Рубка, надстройка
- All structures rising above the main deck.
- Deck houses and other structures extending above the deck.
Electrical, английский
Retractable, английский
- Убирающийся; убираемый
- Втягивающийся
Centerboard, английский
Шверт поворотного типа
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Lightship, английский
A purpose-built, crewed vessel with distinctive markings, anchored at a specified and charted 179 lightship location, and carrying a light for the guidance of mariners (not to be confused with light ship). lightweight amphibious container handler: usmc equipment, usually maneuvered by a bulldozer, that retrieves twenty-foot equivalent containers from landing craft in the surf and places them on flatbed truck trailers on the beach.
Light phase characteristic, английский
The distinctive sequences of flashes and dark intervals that identify an aid to navigation.
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