Editing Warp Core (section)

==Nacelle and Nacelle Sub Components==
A nacelle is an outboard engine housing structure on spacecraft.

Impulse nacelles of a sublight shuttlecraft house the ships impulse driver engines. (TNG: "In Theory", "Descent" display graphic) The warp nacelles in warp-capable shuttles and starships house the warp coils, necessary components of warp drive. The warp coils create a subspace displacement field, which "warps" the space around the vessel allowing it to "ride" on a spatial distortion, and travel faster than the speed of light. (ENT: "Cold Front") While not always present on starships, warp nacelles are the most common component of warp flight, dating as far back as Zefram Cochrane's original warp ship, the Phoenix, circa 2063. They were also sometimes known as "power nacelles" in the 23rd century. (Star Trek: First Contact; TOS: "The Doomsday Machine")
Aboard Federation vessels of the 24th century, warp coils are fed by plasma conduits from the warp core reactor assembly. Nacelles are usually separated from the main structure of the ship because of radiation generated by the nacelles; when at optimal levels, the radiation could be deleterious to the safety of ship and crew.
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Nacelles are separated from the ship by large pylons, and usually house a Bussard ramscoop at the fore end, primarily used for collecting hydrogen from space.

A nacelle's interior also includes a small control room, accessible in nominal conditions by a Jefferies tube that permits maintenance and monitoring of the system's operation. (TNG: "Eye of the Beholder") Aboard the prototypical NX class Enterprise of the 22nd century, a long catwalk spanned the length of each nacelle and, in emergency situations, acted as shelter for the ship's crew against certain types of radiation such as that created by neutronic storms. (ENT: "The Catwalk", "The Crossing")

Most vessels typically have two nacelles. However, vessels can operate with one nacelle disabled, but at reduced warp speeds. (VOY: "Year of Hell", ENT: "Twilight") It is not unprecedented, though, for vessels to have different nacelle configurationss. For example, Federation Freedom-class starships have one, Niagara-class starships have three, Constellation-class and Prometheus-class starships have four nacelles. (TNG: "The Battle", "The Best of Both Worlds, Part II", VOY: "Message in a Bottle")

:'''''Two additional nacelles deployed from the saucer section of Prometheus-class starships when they entered Multi-vector assault mode, these were not visible during normal operation. In an alternative future, depicted in TNG: "All Good Things...", a refit version of the USS Enterprise-D was equipped with three nacelles.''''' 

Even at sublight speeds serious impacts from weapons or other objects can spell disaster for a ship because of a feedback of energy throughout the vessel. The Enterprise-D was destroyed by such an impact in an alternate timeline when the USS Bozeman collided with one of Enterprise's warp nacelles. (TNG: "Cause and Effect")

Some starship classes, such as the Defiant-class and the Steamrunner-class, possess nacelles that are integrated into the ship's main structure without pylons. (Star Trek: Deep Space Nine; Star Trek: First Contact)

In 2377, the expression "third nacelle" was analogous to "fifth wheel". (VOY: "Inside Man") 
===Bussard collector===
The Bussard collector, also known as a Bussard ramscoop or ramscoop, is a device usually attached to the forward end of a warp nacelle.

All Federation starships are equipped with Bussard collectors, which are positioned in the best line of sight to collect particles. Collection works best in regions where particle density is high like solar systems or nebulae.

The Bussard collector normally collects hydrogen, especially deuterium for fuel replenishment but can be reconfigured to collect various gases like sirillium and plasma particles.

In 2374, Seven of Nine determined that the collectors of an Intrepid-class starship were less than optimal. She performed a series of modifications that enhanced them by twenty-three percent. (VOY: "Unforgettable")

A Bussard collector can also be reconfigured to expel gases or plasma. (TNG: "Samaritan Snare") Bussard collectors are not capable of producing nadion emissions. (VOY: "The Haunting of Deck Twelve") The Tosk variation of the Bussard collector was known as the arva node. (DS9: "Captive Pursuit")

In 2365, the USS Enterprise-D's collectors were used to create a harmless pyrotechnic display against the Pakleds to recover Lieutenant Geordi La Forge by igniting released hydrogen. This event came to be known as a crimson force field. (TNG: "Samaritan Snare")

In 2367, the Enterprise-D released large quantities of hydrogen from its Bussard collectors to create a violent explosion. (TNG: "Night Terrors")

In 2373, USS Voyager's collectors were used to gather the sirillium from a class 17 nebula. It was described that they would "cut through that nebula like ice cream scoops." (VOY: "Flashback") They were modified to gather plasma particles from an astral eddy. (VOY: "Real Life")

In 2375, Commander William Riker used the USS Enterprise-E's collectors to gather, and then vent, metreon gas against attacking Son'a vessels, a maneuver which Geordi nicknamed the Riker Maneuver. (Star Trek: Insurrection)

In 2376, USS Voyager's collectors were modified to gather deuterium from a J class nebula. (VOY: "Unforgettable", "The Haunting of Deck Twelve") 
===Plasma injector===
A plasma injector is a component of a starship's warp drive system, the EPS, which propels  drive plasma into the warp coils. (DS9: "Captive Pursuit")

The Enterprise NX-01 operated five plasma injectors. When the fifth one started to fail in 2152, the Enterprise acquired one replacement and two spares from the Kreetassans after a lengthy negotiation process, although the ship could have continued normal operation with only four working injectors. (ENT: "A Night in Sickbay")

Later that year, Rianna Mayweather aligned the plasma injectors of the ECS Horizon. (ENT: "Horizon")

In 2154, an Illyrian captain offered the damaged Enterprise a few plasma injectors or some antimatter, but not a needed warp coil. (ENT: "Damage")

In 2370, the unannounced failure of a plasma injector aboard the USS Rio Grande led to an accident inside the Bajoran wormhole, propelling the runabout into the mirror universe. (DS9: "Crossover")

In 2373, Chief Miles O'Brien was unable to bring the thrusters of a crashed Jem'Hadar warship online due to the ion flow regulator being damaged. (DS9: "The Ship")

The same year, Tieran occupying Kes body remodulated the plasma injector of his shuttle to suppress its warp signature. (VOY: "Warlord")

A little later, an attack by the Nerada took the plasma injectors of the USS Voyager off-line so the ship couldn't engage warp drive. (VOY: "Favorite Son")

By 2375, The Doctor had a holographic image of B'Elanna Torres' foot stuck in a plasma injector. (VOY: "Nothing Human")

In 2376, a Borg cube damaged the Delta Flyer's plasma injectors so the warp drive couldn't be engaged, despite Harry Kim's attempts to clear the injectors. (VOY: "Collective") 

===Warp coil===
Warp coils are an integral part of a starship's warp drive. Mounted within the warp nacelles, the coils take the plasma generated by the warp core, and use it to create the warp field that allows faster than light travel.

Warp coils are typically composed of cast verterium cortenide surrounding a core of densified tungsten-cobalt-magnesium. (VOY: "Investigations")

:'''''The material was first mentioned in the Star Trek: The Next Generation Technical Manual.''''' 

A teraphasic coil was a type of warp coil utilized by the Xyrillians in the mid-22nd century. The Enterprise (NX-01) encountered a Xyrillian starship with damaged teraphasic coils in 2151. (ENT: "Unexpected")

In the mirror universe in 2155, Commander Trip Tucker, when seeing the USS Defiant, mentioned that the size of the ship's warp coils could allow the ship to travel at speeds faster than Warp 7. (ENT: "In a Mirror, Darkly")

Wesley Crusher once stated that his first friend was a warp coil. (TNG: "The Game")

William T. Riker considered the warp coil the most important invention of the past two hundred years. Before the coils were invented, "humans were confined to a single sector of the galaxy". (TNG: "A Matter of Time")

In 2372, a subspace inversion in the Bajoran wormhole damaged the USS Defiant and its warp coils were locked into a feedback loop. (DS9: "The Visitor")

In 2377, USS Voyager landed on a planet to make repairs. Among the repairs was the removal and maintenance of several warp coils via shuttle. (VOY: "Nightingale")