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| + | {{at|xx}} |
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| − | [[File: |
+ | [[File:Galaxy class nacelle tube (interior).jpg|thumb|A row of warp coils inside a {{Class|Galaxy}} warp nacelle]] |
[[File:Shuttle removes warpcoil.jpg|thumb|A [[shuttlecraft]] removes a warp coil from the {{USS|Voyager}} for maintenance]] |
[[File:Shuttle removes warpcoil.jpg|thumb|A [[shuttlecraft]] removes a warp coil from the {{USS|Voyager}} for maintenance]] |
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| − | '''Warp coils''' |
+ | '''Warp coils''' were an integral part of a [[starship]]'s [[warp drive]]. Mounted within the [[warp nacelle]]s, the coils used the [[plasma]] generated by the [[warp core]] to create a [[subspace displacement field]] that allowed faster-than-light travel. |
| − | Warp coils |
+ | Warp coils were typically composed of cast [[verterium cortenide]] surrounding a core of densified [[tungsten]]-[[cobalt]]-[[magnesium]]. ({{VOY|Investigations}}) |
{{bginfo|The material was first mentioned in the ''[[Star Trek: The Next Generation Technical Manual]]''.}} |
{{bginfo|The material was first mentioned in the ''[[Star Trek: The Next Generation Technical Manual]]''.}} |
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| ⚫ | When [[matter]] and [[antimatter]] on an {{class|NX}} starship collided together, it created an extreme amount of energy within a [[warp core]] which was then transferred to [[conduit]]s, leading to the [[nacelle]]s outside the ship which contained the warp coils, thus creating a [[subspace]] displacement field around a ship, allowing it to travel at warp speed. ({{ENT|Cold Front}}) |
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| − | It is possible that when the eletro-plasma passes through the warp coils, the electromagnetic field transmits part of the plasma energy to the materials that the warp coils are made, thus generating energy for the materials to create the warp field. The warp field is output from the side openings of the nacelle, thus distorting the space-time. (Fan theory) |
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| ⚫ | |||
| ⚫ | When [[matter]] and [[antimatter]] on an {{ |
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| ⚫ | |||
| ⚫ | |||
| − | |||
| ⚫ | |||
{{EnterpriseNX}}'s [[catwalk]] could reach temperatures as high as three hundred [[degree]]s when the ship's warp coils were activated. ({{ENT|The Catwalk}}) |
{{EnterpriseNX}}'s [[catwalk]] could reach temperatures as high as three hundred [[degree]]s when the ship's warp coils were activated. ({{ENT|The Catwalk}}) |
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| Line 20: | Line 19: | ||
In [[2152]], a group of [[Mazarite]] criminals chased ''Enterprise'' on [[Mazarite warship]]s at warp 4.9 in order to capture [[Ambassador]] [[V'Lar]] before she could testify against them. In order to sustain their warp velocity, the ships released drive plasma to keep their warp coils from overloading. ({{ENT|Fallen Hero}}) |
In [[2152]], a group of [[Mazarite]] criminals chased ''Enterprise'' on [[Mazarite warship]]s at warp 4.9 in order to capture [[Ambassador]] [[V'Lar]] before she could testify against them. In order to sustain their warp velocity, the ships released drive plasma to keep their warp coils from overloading. ({{ENT|Fallen Hero}}) |
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| − | Later, the [[automated repair station]] asked [[Jonathan Archer]] what he could compensate it with to repair ''Enterprise'' after it was severely damaged in an encounter with a [[Romulan mine]]. The station then told Archer he could supply it with three warp coils, five [[deuterium injector]]s or two hundred |
+ | Later, the [[automated repair station]] asked [[Jonathan Archer]] what he could compensate it with to repair ''Enterprise'' after it was severely damaged in an encounter with a [[Romulan mine]]. The station then told Archer he could supply it with three warp coils, five [[deuterium injector]]s, or two hundred liters of [[warp plasma]]. ({{ENT|Dead Stop}}) |
Later that year, [[Commander]] [[Charles Tucker III]] asked [[Ensign]] [[Travis Mayweather]] if he could re-polarize the warp coils in ''Enterprise''{{'}}s starboard nacelle, since he was shorthanded with his engineering staff. ({{ENT|The Crossing}}) |
Later that year, [[Commander]] [[Charles Tucker III]] asked [[Ensign]] [[Travis Mayweather]] if he could re-polarize the warp coils in ''Enterprise''{{'}}s starboard nacelle, since he was shorthanded with his engineering staff. ({{ENT|The Crossing}}) |
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| − | In [[2153]], after discovering sections of a [[Borg sphere]] destroyed in [[2063]] by the {{USS|Enterprise|NCC-1701-E|-E}} that crashed in [[Antarctica]], [[Rooney (female)|Rooney]] speculated that a [[Borg]] [[transwarp coil]] she found might be some kind of warp coil. ({{ENT|Regeneration}}) |
+ | In [[2153]], after discovering sections of a [[Borg sphere]] destroyed in [[2063]] by the {{USS|Enterprise|NCC-1701-E|-E}} that [[crash land|crashed]] in [[Antarctica]], [[Rooney (female)|Rooney]] speculated that a [[Borg]] [[transwarp coil]] she found might be some kind of warp coil. ({{ENT|Regeneration}}) |
''In an [[alternate timeline]], [[Captain]] [[T'Pol]] crashed a [[Xindi-Reptilian warship]] that was docked with ''Enterprise'' into another, causing massive damage to ''Enterprise''{{'}}s starboard nacelle. Commander Tucker told her that half the warp coils in the nacelle were fused. Tucker told T'Pol he would have to rebuild the coil assembly from scratch, which would take him a minimum of six months.'' ({{ENT|Twilight}}) |
''In an [[alternate timeline]], [[Captain]] [[T'Pol]] crashed a [[Xindi-Reptilian warship]] that was docked with ''Enterprise'' into another, causing massive damage to ''Enterprise''{{'}}s starboard nacelle. Commander Tucker told her that half the warp coils in the nacelle were fused. Tucker told T'Pol he would have to rebuild the coil assembly from scratch, which would take him a minimum of six months.'' ({{ENT|Twilight}}) |
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| Line 30: | Line 29: | ||
In [[2154]], after awakening from an induced [[coma]] for three days, Commander Tucker complained that it would take him days to realign the warp coils on ''Enterprise'' after [[Phlox]] slightly damaged the ship while trying to take it to warp inside a [[nebula]] in the [[Delphic Expanse]]. ({{ENT|Doctor's Orders}}) |
In [[2154]], after awakening from an induced [[coma]] for three days, Commander Tucker complained that it would take him days to realign the warp coils on ''Enterprise'' after [[Phlox]] slightly damaged the ship while trying to take it to warp inside a [[nebula]] in the [[Delphic Expanse]]. ({{ENT|Doctor's Orders}}) |
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| − | Later on, ''Enterprise''{{'}}s warp coil was destroyed in the fierce [[battle of Azati Prime]], making warp speed impossible for the starship. Captain Jonathan Archer |
+ | Later on, ''Enterprise''{{'}}s primary warp coil was destroyed in the fierce [[battle of Azati Prime]], making warp speed impossible for the starship. Captain Jonathan Archer, with no other options to restore warp capability to ''Enterprise'', stole a primary warp coil from the [[Illyrian]]s in order for the ship to intercept the [[Xindi superweapon]] in time to save [[Earth]]. ({{ENT|Damage}}) |
Shortly afterwards, T'Pol suggested to Commander Tucker that she could order him to go to sleep, since he had not slept for two days. Tucker told her he couldn't, since ''Enterprise'' was full of holes and the only thing allowing them to travel at warp speed was a stolen warp coil. ({{ENT|The Forgotten}}) |
Shortly afterwards, T'Pol suggested to Commander Tucker that she could order him to go to sleep, since he had not slept for two days. Tucker told her he couldn't, since ''Enterprise'' was full of holes and the only thing allowing them to travel at warp speed was a stolen warp coil. ({{ENT|The Forgotten}}) |
||
| − | Later, while attempting to capture [[Doctor|Dr.]] [[Arik Soong]] and his [[ |
+ | Later, while attempting to capture [[Doctor|Dr.]] [[Arik Soong]] and his [[Augment]]s in [[Klingon]] space, Commander Tucker had ''Enterprise''{{'}}s warp coils realigned, so the ship would appear to be a Klingon [[battle cruiser]] to Klingon sensors. ({{ENT|The Augments}}) |
| − | In the [[mirror universe]] in [[mirror universe history|2155]], Commander |
+ | In the [[mirror universe]] in [[mirror universe history|2155]], Commander {{mu|Charles Tucker III|Trip Tucker}}, when seeing the {{USS|Defiant|NCC-1764}}, 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}}) |
| − | In [[2366]], a [[Romulan]] {{ |
+ | In [[2366]], a [[Romulan]] {{Class|D'deridex}} vessel exceeded its maximum warp speed by thirty percent in an effort to reach [[Gomtuu]] before the {{USS|Enterprise|NCC-1701-D|-D}}. It ended up causing permanent damage to its warp coils. ({{TNG|Tin Man}}) |
| − | In [[2367]], while in a simulation created by [[Barash]], [[Admiral]] [[Jean-Luc Picard]] told Captain [[William T. Riker]] that peace between the Romulans and the Federation |
+ | In [[2367]], while in a simulation created by [[Barash]], [[Admiral]] [[Jean-Luc Picard]] told Captain [[William T. Riker]] that peace between the Romulans and the Federation occurred after Riker saved a Romulan battle cruiser that had its warp coils and life support fail on them. ({{TNG|Future Imperfect}}) |
Later that year, the warp coils on the Klingon starship {{IKS|Bortas|Vor'cha class}}, commanded by [[Gowron]], were damaged after a [[Klingon Bird-of-Prey]] opened fire on the ''Bortas'' in orbit of [[Qo'noS]], plunging the Klingons into a [[Klingon Civil War|Civil War]]. ({{TNG|Redemption}}) |
Later that year, the warp coils on the Klingon starship {{IKS|Bortas|Vor'cha class}}, commanded by [[Gowron]], were damaged after a [[Klingon Bird-of-Prey]] opened fire on the ''Bortas'' in orbit of [[Qo'noS]], plunging the Klingons into a [[Klingon Civil War|Civil War]]. ({{TNG|Redemption}}) |
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[[Wesley Crusher]] once stated that his first friend was a warp coil. ({{TNG|The Game}}) |
[[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, "''[[Human]]s were confined to a single [[sector]] of [[the galaxy]]''". ({{TNG|A Matter of Time}}) |
+ | William T. Riker considered the warp coil the most important invention of the past two hundred years. Before the coils were invented, "''[[Human]]s were confined to a single [[sector]] of [[Milky Way Galaxy|the galaxy]]''". ({{TNG|A Matter of Time}}) |
| − | In [[2368]], the ''Enterprise''-D's starboard warp coil suffered from a minor fluctuation, reported to Captain Jean-Luc Picard |
+ | In [[2368]], the ''Enterprise''-D's starboard warp coil suffered from a minor fluctuation, as reported to Captain Jean-Luc Picard by his [[chief engineer]], [[Geordi La Forge]]. ({{TNG|Ethics}}) |
In [[2369]], Captain [[Edward Jellico]] told [[Lieutenant Commander]] Geordi La Forge that he found the efficiency of the ''Enterprise''-D's warp coils unacceptable shortly after taking command. ({{TNG|Chain of Command, Part I}}) |
In [[2369]], Captain [[Edward Jellico]] told [[Lieutenant Commander]] Geordi La Forge that he found the efficiency of the ''Enterprise''-D's warp coils unacceptable shortly after taking command. ({{TNG|Chain of Command, Part I}}) |
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| − | The {{USS|Hera}} used trionic |
+ | The {{USS|Hera}} used [[trionic initiator]]s in the warp coils, which had the reputation of creating strange side effects, such as [[warp bubble]]s and subspace deformations. ({{TNG|Interface}}) |
In [[2372]], a [[subspace inversion]] in the [[Bajoran wormhole]] damaged the {{USS|Defiant|2370}} and its warp coils were locked into a feedback loop. ({{DS9|The Visitor}}) |
In [[2372]], a [[subspace inversion]] in the [[Bajoran wormhole]] damaged the {{USS|Defiant|2370}} and its warp coils were locked into a feedback loop. ({{DS9|The Visitor}}) |
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| Line 58: | Line 57: | ||
''In an [[alternate timeline]], [[Lieutenant]] [[Lasca]] asked [[Harry Kim]] if he brought the schematics for the {{USS|Yellowstone|NX-74751}}'s warp coil with new plasma flow equations for their meeting with [[Admiral]] [[Strickler (Admiral)|Strickler]] to show they had solved the [[dilithium]] fracture problem with the ship. Kim did not bring it with him, however.'' ({{VOY|Non Sequitur}}) |
''In an [[alternate timeline]], [[Lieutenant]] [[Lasca]] asked [[Harry Kim]] if he brought the schematics for the {{USS|Yellowstone|NX-74751}}'s warp coil with new plasma flow equations for their meeting with [[Admiral]] [[Strickler (Admiral)|Strickler]] to show they had solved the [[dilithium]] fracture problem with the ship. Kim did not bring it with him, however.'' ({{VOY|Non Sequitur}}) |
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| − | Later that year, the {{USS|Voyager}} |
+ | Later that year, the {{USS|Voyager}} required [[polyferranide]] to help seal its warp coils. ''Voyager'' was able to obtain a small amount from the [[Sky Spirits' homeworld]]. ({{VOY|Tattoo}}) |
Later, [[Lorrum]], a [[Kazon]], asked [[Crewman]] [[Michael Jonas]] to sabotage ''Voyager''{{'}}s warp coils, so the [[Kazon-Nistrim]] would be able to commandeer the ship. ({{VOY|Lifesigns}}) |
Later, [[Lorrum]], a [[Kazon]], asked [[Crewman]] [[Michael Jonas]] to sabotage ''Voyager''{{'}}s warp coils, so the [[Kazon-Nistrim]] would be able to commandeer the ship. ({{VOY|Lifesigns}}) |
||
| − | When ''Voyager'' was severely damaged by proton bursts, Lieutenant [[Tuvok]] reported that the warp coils on both of ''Voyager''{{'}}s nacelles were fused and inoperable. ({{VOY|Deadlock}}) |
+ | When ''Voyager'' was severely damaged by [[proton]] bursts, Lieutenant [[Tuvok]] reported that the warp coils on both of ''Voyager''{{'}}s nacelles were fused and inoperable. ({{VOY|Deadlock}}) |
In [[2374]], [[Lieutenant junior grade|Lieutenant]] [[Tom Paris]] and [[Neelix]] bribed an [[Unnamed humanoids (24th century)#Alien visitor's species|alien]] in the [[Delta Quadrant]] with a spare warp coil from ''Voyager'', so he would provide him with information on [[Tau (pirate)|Tau]], who stole many important items from the ship, which the crew were intending to get back. ({{VOY|Concerning Flight}}) |
In [[2374]], [[Lieutenant junior grade|Lieutenant]] [[Tom Paris]] and [[Neelix]] bribed an [[Unnamed humanoids (24th century)#Alien visitor's species|alien]] in the [[Delta Quadrant]] with a spare warp coil from ''Voyager'', so he would provide him with information on [[Tau (pirate)|Tau]], who stole many important items from the ship, which the crew were intending to get back. ({{VOY|Concerning Flight}}) |
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| Line 70: | Line 69: | ||
In a [[holographic]] simulation of ''Voyager''{{'}}s crew created by [[Seven of Nine]], Neelix suggested that re-phasing the warp coils would increase power to the nacelles. ({{VOY|One}}) |
In a [[holographic]] simulation of ''Voyager''{{'}}s crew created by [[Seven of Nine]], Neelix suggested that re-phasing the warp coils would increase power to the nacelles. ({{VOY|One}}) |
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| − | In [[2375]], the crew of ''Voyager'' stole a transwarp coil from a Borg sphere and used it in place of its warp coils to generate a [[transwarp corridor]] |
+ | In [[2375]], the crew of ''Voyager'' stole a transwarp coil from a Borg sphere and used it in place of its warp coils to generate a [[transwarp corridor]] propelling the ship at much faster speeds than a regular warp coil could. The transwarp coil ended up taking ''Voyager'' 20,000 [[light year]]s closer to the [[Alpha Quadrant]] before eventually giving out. ({{VOY|Dark Frontier}}) |
In [[2377]], USS ''Voyager'' landed on a planet to make repairs. Among the repairs was the removal and maintenance of several warp coils via [[class 2 shuttle|shuttle]]. ({{VOY|Nightingale}}) |
In [[2377]], USS ''Voyager'' landed on a planet to make repairs. Among the repairs was the removal and maintenance of several warp coils via [[class 2 shuttle|shuttle]]. ({{VOY|Nightingale}}) |
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| Line 81: | Line 80: | ||
*[[Primary warp coil]] |
*[[Primary warp coil]] |
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*[[Primary drive coil]] |
*[[Primary drive coil]] |
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| + | *[[Resonator coil]] |
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*[[Teraphasic coil]] |
*[[Teraphasic coil]] |
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*[[Transwarp coil]] |
*[[Transwarp coil]] |
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| − | |||
[[cs:Warp cívky]] |
[[cs:Warp cívky]] |
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[[fr:Bobine de distorsion]] |
[[fr:Bobine de distorsion]] |
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[[ja:ワープ・コイル]] |
[[ja:ワープ・コイル]] |
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| − | [[nl: |
+ | [[nl:Warpspoel]] |
[[ru:Варп-катушка]] |
[[ru:Варп-катушка]] |
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| + | [[sv:Warpspole]] |
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| − | [[Category:Propulsion technology]] |
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| + | [[Category:Warp]] |
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Revision as of 19:47, 31 December 2014
AT: "xx"
.jpg){kind=link}
A row of warp coils inside a Galaxy-class warp nacelle
A shuttlecraft removes a warp coil from the USS Voyager for maintenance
Warp coils were an integral part of a starship's warp drive. Mounted within the warp nacelles, the coils used the plasma generated by the warp core to create a subspace displacement field that allowed faster-than-light travel.
Warp coils were typically composed of cast verterium cortenide surrounding a core of densified tungsten-cobalt-magnesium. (VOY: "Investigations")
When matter and antimatter on an NX-class starship collided together, it created an extreme amount of energy within a warp core which was then transferred to conduits, leading to the nacelles outside the ship which contained the warp coils, thus creating a subspace displacement field around a ship, allowing it to travel at warp speed. (ENT: "Cold Front")
Around a kiloton of gallicite, a mineral, was enough to refit the warp coils of an Intrepid-class vessel. (VOY: "Blood Fever")
A class 2 shuttle could generate a dielectric field with its warp coils to protect itself from turbulence within a planet's atmosphere. (VOY: "Innocence")
Enterprise NX-01's catwalk could reach temperatures as high as three hundred degrees when the ship's warp coils were activated. (ENT: "The Catwalk")
A teraphasic coil was a type of warp coil utilized by the Xyrillians in the mid-22nd century. Enterprise NX-01 encountered a Xyrillian starship with damaged teraphasic coils in 2151. (ENT: "Unexpected")
In 2152, a group of Mazarite criminals chased Enterprise on Mazarite warships at warp 4.9 in order to capture Ambassador V'Lar before she could testify against them. In order to sustain their warp velocity, the ships released drive plasma to keep their warp coils from overloading. (ENT: "Fallen Hero")
Later, the automated repair station asked Jonathan Archer what he could compensate it with to repair Enterprise after it was severely damaged in an encounter with a Romulan mine. The station then told Archer he could supply it with three warp coils, five deuterium injectors, or two hundred liters of warp plasma. (ENT: "Dead Stop")
Later that year, Commander Charles Tucker III asked Ensign Travis Mayweather if he could re-polarize the warp coils in Enterprise's starboard nacelle, since he was shorthanded with his engineering staff. (ENT: "The Crossing")
In 2153, after discovering sections of a Borg sphere destroyed in 2063 by the USS Enterprise-E that crashed in Antarctica, Rooney speculated that a Borg transwarp coil she found might be some kind of warp coil. (ENT: "Regeneration")
In an alternate timeline, Captain T'Pol crashed a Xindi-Reptilian warship that was docked with Enterprise into another, causing massive damage to Enterprise's starboard nacelle. Commander Tucker told her that half the warp coils in the nacelle were fused. Tucker told T'Pol he would have to rebuild the coil assembly from scratch, which would take him a minimum of six months. (ENT: "Twilight")
In 2154, after awakening from an induced coma for three days, Commander Tucker complained that it would take him days to realign the warp coils on Enterprise after Phlox slightly damaged the ship while trying to take it to warp inside a nebula in the Delphic Expanse. (ENT: "Doctor's Orders")
Later on, Enterprise's primary warp coil was destroyed in the fierce battle of Azati Prime, making warp speed impossible for the starship. Captain Jonathan Archer, with no other options to restore warp capability to Enterprise, stole a primary warp coil from the Illyrians in order for the ship to intercept the Xindi superweapon in time to save Earth. (ENT: "Damage")
Shortly afterwards, T'Pol suggested to Commander Tucker that she could order him to go to sleep, since he had not slept for two days. Tucker told her he couldn't, since Enterprise was full of holes and the only thing allowing them to travel at warp speed was a stolen warp coil. (ENT: "The Forgotten")
Later, while attempting to capture Dr. Arik Soong and his Augments in Klingon space, Commander Tucker had Enterprise's warp coils realigned, so the ship would appear to be a Klingon battle cruiser to Klingon sensors. (ENT: "The Augments")
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")
In 2366, a Romulan D'deridex-class vessel exceeded its maximum warp speed by thirty percent in an effort to reach Gomtuu before the USS Enterprise-D. It ended up causing permanent damage to its warp coils. (TNG: "Tin Man")
In 2367, while in a simulation created by Barash, Admiral Jean-Luc Picard told Captain William T. Riker that peace between the Romulans and the Federation occurred after Riker saved a Romulan battle cruiser that had its warp coils and life support fail on them. (TNG: "Future Imperfect")
Later that year, the warp coils on the Klingon starship IKS Bortas, commanded by Gowron, were damaged after a Klingon Bird-of-Prey opened fire on the Bortas in orbit of Qo'noS, plunging the Klingons into a Civil War. (TNG: "Redemption")
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 2368, the Enterprise-D's starboard warp coil suffered from a minor fluctuation, as reported to Captain Jean-Luc Picard by his chief engineer, Geordi La Forge. (TNG: "Ethics")
In 2369, Captain Edward Jellico told Lieutenant Commander Geordi La Forge that he found the efficiency of the Enterprise-D's warp coils unacceptable shortly after taking command. (TNG: "Chain of Command, Part I")
The USS Hera used trionic initiators in the warp coils, which had the reputation of creating strange side effects, such as warp bubbles and subspace deformations. (TNG: "Interface")
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 an alternate timeline, Lieutenant Lasca asked Harry Kim if he brought the schematics for the USS Yellowstone's warp coil with new plasma flow equations for their meeting with Admiral Strickler to show they had solved the dilithium fracture problem with the ship. Kim did not bring it with him, however. (VOY: "Non Sequitur")
Later that year, the USS Voyager required polyferranide to help seal its warp coils. Voyager was able to obtain a small amount from the Sky Spirits' homeworld. (VOY: "Tattoo")
Later, Lorrum, a Kazon, asked Crewman Michael Jonas to sabotage Voyager's warp coils, so the Kazon-Nistrim would be able to commandeer the ship. (VOY: "Lifesigns")
When Voyager was severely damaged by proton bursts, Lieutenant Tuvok reported that the warp coils on both of Voyager's nacelles were fused and inoperable. (VOY: "Deadlock")
In 2374, Lieutenant Tom Paris and Neelix bribed an alien in the Delta Quadrant with a spare warp coil from Voyager, so he would provide him with information on Tau, who stole many important items from the ship, which the crew were intending to get back. (VOY: "Concerning Flight")
Later that year, Voyager's warp coils were in need of maintenance after the ship narrowly escaped from the Hirogen and a black hole. (VOY: "Hunters")
In a holographic simulation of Voyager's crew created by Seven of Nine, Neelix suggested that re-phasing the warp coils would increase power to the nacelles. (VOY: "One")
In 2375, the crew of Voyager stole a transwarp coil from a Borg sphere and used it in place of its warp coils to generate a transwarp corridor propelling the ship at much faster speeds than a regular warp coil could. The transwarp coil ended up taking Voyager 20,000 light years closer to the Alpha Quadrant before eventually giving out. (VOY: "Dark Frontier")
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")