Chronologie de l'accident de la navette spatiale Challenger
La chronologie suivante donne une liste détaillée des évènements majeurs du lancement de la mission STS-51-L.
Catégories :
Article à traduire - Navette spatiale américaine - National Aeronautics and Space Administration
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La chronologie suivante donne une liste détaillée des évènements majeurs du lancement de la mission STS-51-L (Accident de la navette spatiale Challenger).
Légende
Voici la légende des acronymes utilisés :
- APU - Auxilixary Power Unit, générateur auxiliaire
- ET - External Tank, le réservoir externe
- GPC - General Purpose Computer, ordinateur principal
- HPFT - High Pressure Fuel Turbopump, pompe à carburant hautement pressurisée
- LH2 - Liquid Hydrogen, hydrogène liquide
- LO2 ou LOX - Liquid Oxygen, oxygène liquide
- MEC - Main Engine Controller, contrôleur du moteur principal
- PIC - Pyrotechnics Initiator Controller, contrôleur de la pyrotechnie
- psf - Pounds per square foot, pounds par pied au carré
- psi - Pounds per square inch, pounds par inch au carré
- RCS - Reaction Control System, dispositif de contrôle
- CVR - Cockpit Voice Recorder, enregistreur de l'habitacle de la navette
- MET - Mission Elapsed Time, temps en secondes depuis le décollage
Chronologie
Temps (UTC) (heure :minute :seconde) | Mission Elapsed Time (MET) (en secondes) | Évènement | Source | ||||
---|---|---|---|---|---|---|---|
16 :37 :53.444 | -6.566 | Commande d'ignition du SSME-3. | GPC | ||||
16 :37 :53.564 | -6.446 | Commande d'ignition du SSME-2. | GPC | ||||
16 :37 :53.684 | -6.326 | Commande d'ignition du SSME-1. | GPC | ||||
16 :37 :54 | -6 | CDR : "There they go guys!"
MS2 : "All right!" CDR : "Three at a hundred. " |
CVR | ||||
16 :38 :00 | 0 | MS2 "Aall riight!" | CVR | ||||
16 :38 :00.010 | 0.000 | Commande d'ignition du SRB. | GPC | ||||
16 :38 :00.018 | 0.008 | Holddown Post 2 PIC firing. | Appareil photographique E8 | ||||
16 :38 :00.260 | 0.250 | First continuous vertical motion. | Appareil photographique E9 | ||||
The O-rings in the right-hand SRB field joint fail. | |||||||
16 :38 :00.688 | 0.678 | First confirmed puff of smoke appears above SRB/ET attachment ring field joint on right-hand SRB. | Appareil photographique E60 | ||||
16 :38 :00.846 | 0.836 | Eight puffs of smoke appear above field joint, lasting from t+0.836 to t+2.5 seconds MET. | Appareil photographique E63 | ||||
16 :38 :01 | 1 | PLT "Here we go. " | CVR | ||||
16 :38 :02.743 | 2.733 | Dernière preuve de fumée provenant du joint. | Appareil photographique CZR-1 | ||||
A solid-fuel'plug'seals the gap formed by the O-ring'blow-by'. | |||||||
16 :38 :03.385 | 3.375 | Dernière preuve de fumée. | Appareil photographique E60 | ||||
16 :38 :04.349 | 4.339 | SSMEs throttled up to 104% | E41M2076D | ||||
16 :38 :05.684 | 5.674 | Right-hand SRB pressure 11.8 psi above normal. | B47P2302C | ||||
16 :38 :07 | 7 | CDR : "Houston, Challenger - Roll program. " | CVR | ||||
16 :38 :07.734 | 7.724 | Roll program initiated. | V90R5301C | ||||
16 :38 :11 | 11 | PLT : "Go you Mother!" | CVR | ||||
16 :38 :14 | 14 | MS1 : "LVLH" | CVR | ||||
16 :38 :15 | 15 | MS2 : " (Expletive) hot!" | CVR | ||||
16 :38 :16 | 16 | CDR : "Ooohh-kaaay. " | CVR | ||||
16 :38 :19 | 19 | PLT : "Looks like we've got a lotta wind here today. " | CVR | ||||
16 :38 :19.869 | 19.859 | SSMEs throttled back to 94% | E41M2076D | ||||
16 :38 :20 | 20 | CDR : "Yeah. " | CVR | ||||
16 :38 :21.134 | 21.124 | Roll program completed. | VP0R5301C | ||||
16 :38 :22 | 22 | CDR : "It's a little hard to see out my window here. " | CVR | ||||
16 :38 :28 | 28 | PLT : "There's ten thousand feet and Mach point five. " | CVR | ||||
16 :38 :30 | 30 | [Garble] | CVR | ||||
16 :38 :35 | 35 | CDR : "Point nine. " | CVR | ||||
16 :38 :35.389 | 35.379 | SSMEs throttled back to 65% | E41M2076D | ||||
16 :38 :37.000 | 36.990 | Roll and Yaw Attitude Response to wind shear (36.990 to 62.990 sec). | V95H352nC | ||||
The solid fuel'plug'is dislodged. | |||||||
16 :38 :40 | 40 | PLT : "There's Mach one. " | CVR | ||||
16 :38 :41 | 41 | CDR : "Going through nineteen thousand. " | CVR | ||||
16 :38 :43 | 43 | CDR : "OK, we're throttling down. " | CVR | ||||
16 :38 :51.870 | 51.860 | SSMEs throttled up to 104% | E41M2076D | ||||
16 :38 :57 | 57 | CDR : "Throttling up. " | CVR | ||||
16 :38 :58 | 58 | PLT : "Throttle up. " | CVR | ||||
16 :38 :58.798 | 58.788 | First evidence of flame on right-hand SRB. | Appareil photographique E207 | ||||
16 :38 :59 | 59 | CDR : "Roger. " | CVR | ||||
16 :38 :59.010 | 59.000 | Reconstructed Max Q (720 psf) | Best estimated trajectory | ||||
16 :38 :59.272 | 59.262 | Continuous well defined plume of flame on right-hand SRB. | Appareil photographique E207 | ||||
16 :38 :59.763 | 59.753 | Flame from right-hand SRB in downwards direction (seen from south side of vehicle). | Appareil photographique E204 | ||||
16 :38 :60 | 60 | PLT : "Feel that mother go!"
"Woooohoooo!" |
CVR | ||||
16 :39 :00.014 | 60.238 | Pressures in right- and left-hand SRBs begin to diverge. | B47P2302 | ||||
16 :39 :00.248 | 60.238 | First evidence of intermittent plume deflection. | Appareil photographique E207 | ||||
16 :39 :00.258 | 60.248 | First evidence of SRB plume attaching to ET ring frame. | Appareil photographique E203 | ||||
16 :39 :00.998 | 60.988 | First evidence of continuous plume deflection. | Appareil photographique E207 | ||||
16 :39 :01.734 | 61.724 | Peak roll rate in response to wind shear. | V90R5301C | ||||
16 :39 :02 | 62 | PLT : "Thirty-five thousand going through one point five. " | CVR | ||||
16 :39 :02.094 | 62.084 | Peak TVC response to wind shear. | B58H1150C | ||||
16 :39 :02.414 | 62.404 | Peak yaw response to wind shear. | V90R5341C | ||||
16 :39 :02.494 | 62.484 | Right-hand outboard elevon actuator hinge moment spike. | V58P0966C | ||||
16 :39 :03.934 | 63.924 | RH outboard elevon actuator delta pressure change. | V58P0966C | ||||
16 :39 :03.974 | 63.964 | Start of planned pitch rate manœuvre. | V90R5321C | ||||
The plume of flame burns through the LH2 tank in the ET. | |||||||
16 :39 :04.670 | 64.660 | Change in anomalous plume shape (LH2 tank leak near 2058 ring frame). | Appareil photographique E204 | ||||
16 :39 :04.715 | 64.705 | Bright sustained glow on sides of ET | Appareil photographique E204 | ||||
16 :39 :04.947 | 64.937 | Start SSME gimbal angle large pitch variations | V58H1100A | ||||
16 :39 :05 | 65 | CDR : "Reading four eighty six on mine. " | CVR | ||||
16 :39 :05.174 | 65.164 | Beginning of transient motion due to changes in æro forces due to plume. | V90R5321C | ||||
16 :39 :06.774 | 66.764 | Start ET LH2 ullage pressure deviations. | T41P1700C | ||||
16 :39 :07 | 67 | PLT : "Yep, that's what I've got, too. " | CVR | ||||
16 :39 :10 | 70 | CDR : "Roger, go at throttle up. " (Last transmission on air-to-ground voice loop). | CVR | ||||
The flame burns through the lower attachment strut on the right-hand SRB, causing the SRB to move away from the ET. | |||||||
16 :39 :12.214 | 72.204 | Left- and right-hand SRB yaw rates begin to diverge. | V90R2528C | ||||
16 :39 :12.294 | 72.284 | Left- and right-hand SRB pitch rates begin to diverge. | V90R2525C | ||||
16 :39 :12.488 | 72.478 | SRB major high-rate actuator command. | V79H2111A | ||||
16 :39 :12.507 | 72.497 | SSME roll gimball rates 5 deg/sec. | V58H1100A | ||||
16 :39 :12.535 | 72.525 | Vehicle max +Y lateral acceleration (+. 227 g). | V98A1581C | ||||
16 :39 :12.574 | 72.564 | SRB major high-rate actuator motion. | B58H1151C | ||||
16 :39 :12.574 | 72.564 | Start of H2 tank pressure decrease with 2 flow control valves open. | T41P1700C | ||||
16 :39 :12.634 | 72.624 | Last state vector downlinked. | Data reduction | ||||
16 :39 :12.974 | 72.964 | Start of sharp MPS LOX inlet pressure drop. | V41P1330C | ||||
16 :39 :13 | 73 | PLT : "Uh-oh... " | CVR | ||||
16 :39 :13.020 | 73.010 | Last full computer frame of TDRS data. | Data reduction | ||||
16 :39 :13.054 | 73.044 | Start of sharp MPS LH2 inlet pressure drop. | V41P1100C | ||||
16 :39 :13.055 | 73.045 | Vehicle max -Y lateral accelerarion (-. 254 g). | V98A1581C | ||||
Challenger begins to disintegrate. | |||||||
16 :39 :13.134 | 73.124 | Circumferential white pattern on ET aft dome (LH2 tank failure). The bottom of the ET is open and liquid hydrogen spills. | Appareil photographique E204 | ||||
16 :39 :13.134 | 73.124 | Right-hand SRB pressure 19 psi lower than left-hand SRB | B47P2302C | ||||
16 :39 :13.147 | 73.137 | First hint of vapour at intertank. | Appareil photographique E207 | ||||
16 :39 :13.153 | 73.143 | All engine systems start responding to loss of fuel and LOX inlet pressure. | SSME team | ||||
16 :39 :13.172 | 73.162 | Sudden cloud along ET between intertank and aft dome. The right booster slams into the ET just as the LH2 tank is thrust into the oxygen tank. | Appareil photographique E207 | ||||
16 :39 :13.201 | 73.191 | Flash between Orbiter & LH2 tank. | Appareil photographique E204 | ||||
16 :39 :13.221 | 73.211 | SSME telemetry data interference from 73.211 to 73.303. | Data reduction | ||||
16 :39 :13.223 | 73.213 | Flash near SRB forward attachment strut and brightening of flash between Orbiter and ET | Appareil photographique E204 | ||||
16 :39 :13.292 | 73.282 | First indication intense white flash at SRB fwd attach point. | Appareil photographique E204 | ||||
16 :39 :13.337 | 73.327 | Greatly increased intensity of white flash. | Appareil photographique E204 | ||||
16 :39 :13.387 | 73.377 | Start of RCS jet chamber pressure fluctuations. | V42P1552A | ||||
16 :39 :13.393 | 73.383 | All engines approaching HPFT discharge temp redline limits. | E41Tn010D | ||||
16 :39 :13.492 | 73.482 | ME-2 HPFT discharge temperature. Channel A votes for shutdown; 2 strikes on Channel B. | MEC data | ||||
16 :39 :13.492 | 73.482 | SSME-2 controller last time word update. | MEC data | ||||
16 :39 :13.513 | 73.503 | SSME-3 in shutdown due to HPFT discharge temperature redline exceedance. | MEC data | ||||
16 :39 :13.513 | 73.503 | SSME-3 controller last time word update. | MEC data | ||||
16 :39 :13.533 | 73.523 | SSME-1 in shutdown due to HPFT discharge temperature redline exceedance. | Calculation | ||||
16 :39 :13.553 | 73.543 | SSME-1 last telemetered data point. | Calculation | ||||
16 :39 :13.628 | 73.618 | Last validated Orbiter telemetry measurement. | V46P0120A | ||||
16 :39 :13.641 | 73.631 | End of last reconstructured data frame with valid synchronization and frame count. | Data reduction | ||||
16 :39 :14.140 | 74.130 | Last radio frequency signal from Orbiter | Data reduction | ||||
Loss of downlink - Challenger is lost. | |||||||
16 :39 :14.597 | 74.587 | Bright flash in vicinity of Orbiter nose. | Appareil photographique E204 | ||||
16 :39 :16.447 | 76.437 | Right-hand SRB nose cap separation & parachute deployment. | Appareil photographique E207 | ||||
16 :39 :50.260 | 110.250 | Destruction of right-hand SRB via Range Safety System. | E202 Camera. | ||||
16 :39 :50.262 | 110.252 | Destruction of left-hand SRB via Range Safety System. | Appareil photographique E230 |
Notes et références
- (en) Cet article est partiellement ou en totalité issu d'une traduction de l'article de Wikipédia en anglais intitulé «STS-51-L Mission timeline».
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Ce texte est issu de l'encyclopédie Wikipedia. Vous pouvez consulter sa version originale dans cette encyclopédie à l'adresse http://fr.wikipedia.org/wiki/Chronologie_de_l%27accident_de_la_navette_spatiale_Challenger.
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La version présentée ici à été extraite depuis cette source le 19/04/2009.
Ce texte est disponible sous les termes de la licence de documentation libre GNU (GFDL).
La liste des définitions proposées en tête de page est une sélection parmi les résultats obtenus à l'aide de la commande "define:" de Google.
Cette page fait partie du projet Wikibis.
Voir la liste des contributeurs.
La version présentée ici à été extraite depuis cette source le 19/04/2009.
Ce texte est disponible sous les termes de la licence de documentation libre GNU (GFDL).
La liste des définitions proposées en tête de page est une sélection parmi les résultats obtenus à l'aide de la commande "define:" de Google.
Cette page fait partie du projet Wikibis.