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of over 39,000 ft (12,000 m), but its certified engine relight envelope only extends to 30,000 ft (9,100 m). Up to that altitude, a windmill restart can be attempted at airspeeds greater than 260 knots (480 km/h; 300 mph); below that speed, a starter-assisted relight is
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Flameouts occur most frequently at intermediate or low power settings such as in cruise and descent. To prevent a flameout when atmospheric or operational conditions are conducive to it, engine control systems usually provide a continuous ignition function. Ignitors are normally used only at engine
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start, until the flame in the combustion chamber becomes self-sustaining. With continuous ignition, instead, the ignitors are continually sparked every second or less, so that if a flameout occurs, combustion can immediately be restored.
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116:. Depending on where in the relight envelope the restart is attempted (that is depending on the aircraft's airspeed and altitude), the procedure may simply rely on the airflow (
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96:, which allows for significantly more effective control of all engine parameters to prevent flameouts and even initiate an automatic restart if a flameout occurs.
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Following a flameout, jet engines can normally be restarted in flight, provided the aircraft is flying within the portion of its
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Early jet engines were prone to flameout following disturbances of inlet airflow, or sudden or inappropriate
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128:) in order for the compressor to achieve sufficient rotational speed for successful ignition.
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in the combustion chamber. Modern engines are much more robust in this respect, and are often
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228:"Airplane Turbofan Engine Operation and Malfunctions, Basic Familiarization for Flight Crews"
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203:"Flameout: Why the fire in a perfectly healthy jet engine can die"
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259:"Gas Turbine Performance". 2nd edition. P.P.Walsh P. Fletcher.
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48:. The loss of flame can have a variety of causes, such as
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76:, mechanical failure, or very low ambient temperatures.
16:"Flame out" redirects here. For Internet usage, see
698:Engine-indicating and crew-alerting system (EICAS)
178:. Argone National Laboratory. 2003. Archived from
731:Full Authority Digital Engine/Electronics (FADEC)
815:
278:A318/A319/A320/A321 Flight Crew Operating Manual
688:Electronic centralised aircraft monitor (ECAM)
44:due to the extinguishment of the flame in its
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284:. 17 April 2017. p. PRO-ABN-ENG 13/106.
693:Electronic flight instrument system (EFIS)
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176:"Turbo Jet Flame Out by Ask a Scientist"
88:movements, which resulted in incorrect
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241:from the original on 4 September 2013
201:Garrison, Peter (1 September 2006).
13:
14:
840:
103:
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561:Thrust specific fuel consumption
23:Type of engine issue in aviation
610:Propeller speed reduction unit
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1:
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146:can make restart impossible.
135:passenger jet has a maximum
120:) or require the use of the
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521:Engine pressure ratio (EPR)
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10:
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788:Auxiliary power unit (APU)
412:Rotating detonation engine
156:Index of aviation articles
15:
775:
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336:
496:Aircraft engine starting
207:Air & Space Magazine
126:starter-assisted restart
372:Pulse detonation engine
114:engine relight envelope
36:) is the run-down of a
566:Thrust to weight ratio
536:Overall pressure ratio
531:Jet engine performance
450:Centrifugal compressor
367:Gluhareff Pressure Jet
52:, excessive altitude,
803:Ice protection system
571:Variable cycle engine
541:Propulsive efficiency
58:foreign object damage
703:Flight data recorder
460:Constant speed drive
440:Afterburner (reheat)
94:digitally controlled
182:on 28 February 2015
605:Propeller governor
18:Flaming (Internet)
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810:
683:Annunciator panel
669:
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584:
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475:Propelling nozzle
131:For example, the
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798:Hydraulic system
793:Bleed air system
783:Air-start system
646:Counter-rotating
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576:Windmill restart
546:Specific impulse
516:Compressor stall
445:Axial compressor
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118:windmill restart
54:compressor stall
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430:Accessory drive
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112:defined as the
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90:air-fuel ratios
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50:fuel starvation
28:In aviation, a
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824:Aviation risks
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104:Engine restart
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80:Engine control
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60:deriving from
42:turbine engine
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776:Other systems
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753:and induction
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74:precipitation
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762:Flame holder
736:Thrust lever
726:Autothrottle
556:Thrust lapse
525:
511:Bypass ratio
338:Gas turbines
330:gas turbines
277:
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243:. Retrieved
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210:. Retrieved
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196:
184:. Retrieved
180:the original
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130:
125:
117:
113:
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86:thrust lever
83:
70:volcanic ash
33:
29:
27:
25:
829:Jet engines
676:instruments
631:Blade pitch
626:Autofeather
470:Nose bullet
323:Jet engines
133:Airbus A320
818:Categories
619:Principles
598:Components
590:Propellers
489:Principles
435:Air intake
423:components
421:Mechanical
397:Turboshaft
162:References
140:required.
38:jet engine
651:Proprotor
501:Bleed air
455:Combustor
392:Turboprop
144:Core lock
72:, severe
46:combustor
40:or other
34:flame-out
767:Jet fuel
656:Scimitar
526:Flameout
465:Impeller
387:Turbojet
382:Turbofan
363:Pulsejet
327:aircraft
245:25 March
239:Archived
212:25 March
186:25 March
150:See also
30:flameout
755:systems
377:Propfan
137:ceiling
122:starter
674:Engine
551:Thrust
407:Rocket
402:Ramjet
282:Airbus
267:p. 484
263:
351:Types
231:(doc)
68:, or
62:birds
751:Fuel
341:and
325:and
261:ISBN
247:2012
214:2012
188:2012
66:hail
32:(or
235:FAA
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280:.
237:.
233:.
205:.
64:,
56:,
365:/
315:e
308:t
301:v
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124:(
20:.
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