{"id":20775,"date":"2025-09-09T18:54:20","date_gmt":"2025-09-09T16:54:20","guid":{"rendered":"https:\/\/reperes-astro.fr\/?p=20775"},"modified":"2025-09-09T19:03:44","modified_gmt":"2025-09-09T17:03:44","slug":"le-command-module-cm-002-et-la-mission-a-004","status":"publish","type":"post","link":"https:\/\/reperes-astro.fr\/le-command-module-cm-002-et-la-mission-a-004\/","title":{"rendered":"Le Command Module CM-002 et la Mission A-004"},"content":{"rendered":"\n

Le Command Module CM-002<\/strong> et la Mission A-004 <\/strong>occupent une place importante dans les d\u00e9buts du programme spatial Apollo. Il s\u2019agissait du premier module de commande de production (Bloc I) <\/strong>\u00e0 \u00eatre lanc\u00e9 dans le cadre d\u2019un vol d\u2019essai. Contrairement aux maquettes ou aux capsules de test structurel utilis\u00e9es jusque-l\u00e0, CM-002 repr\u00e9sentait la premi\u00e8re v\u00e9ritable version du vaisseau Apollo apte \u00e0 valider en conditions r\u00e9elles les syst\u00e8mes de s\u00e9curit\u00e9 essentiels au futur vol habit\u00e9.<\/p>\n\n\n\n

La mission A-004<\/strong><\/h2>\n\n\n\n

Le 20 janvier 1966, CM-002 prit place au sommet d\u2019une fus\u00e9e Little Joe II<\/strong>, un petit lanceur sp\u00e9cialement d\u00e9velopp\u00e9 pour tester les syst\u00e8mes d\u2019\u00e9jection et de s\u00e9curit\u00e9 des capsules Apollo. Le vol, d\u00e9sign\u00e9 A-004<\/strong>, se d\u00e9roula depuis le White Sands Missile Range <\/strong>au Nouveau-Mexique.<\/p>\n\n\n

\n
\"Command<\/a><\/figure>\n<\/div>\n\n\n

<\/p>\n\n\n\n

L\u2019objectif principal \u00e9tait de v\u00e9rifier le fonctionnement du Launch Escape System(LES)<\/strong>, la tour de sauvetage \u00e0 fus\u00e9e install\u00e9e au-dessus de la capsule. Ce dispositif devait pouvoir arracher rapidement le module de commande de la fus\u00e9e en cas d\u2019explosion ou de dysfonctionnement du lanceur. Pour ce test, la fus\u00e9e Little Joe II simula une situation d\u2019urgence \u00e0 haute altitude : apr\u00e8s une ascension propuls\u00e9e, une instabilit\u00e9 intentionnelle fit basculer la fus\u00e9e, d\u00e9clenchant automatiquement le syst\u00e8me d\u2019\u00e9jection.<\/p>\n\n\n

\n
\"\"<\/a><\/figure>\n<\/div>\n\n\n

<\/p>\n\n\n\n

Le LES<\/strong> se s\u00e9para correctement du lanceur, emportant CM-002 loin de tout danger potentiel, puis lib\u00e9ra la capsule qui descendit sous parachutes. Ce vol confirma que les astronautes pourraient \u00eatre sauv\u00e9s m\u00eame dans une situation critique lors des premi\u00e8res secondes du lancement.<\/p>\n\n\n\n

Un jalon dans le programme Apollo<\/strong><\/h2>\n\n\n\n

La r\u00e9ussite de la mission A-004 valida non seulement le syst\u00e8me de sauvetage<\/strong>, mais aussi la solidit\u00e9 structurelle <\/strong>du Command Module Apollo en conditions r\u00e9elles. CM-002 fut ainsi un maillon essentiel de la campagne d\u2019essais qui permit \u00e0 la NASA d\u2019acqu\u00e9rir la confiance n\u00e9cessaire pour autoriser les premiers vols habit\u00e9s quelques ann\u00e9es plus tard.<\/p>\n\n\n\n

Une pi\u00e8ce de mus\u00e9e<\/strong><\/h2>\n\n\n\n

Apr\u00e8s sa r\u00e9cup\u00e9ration, CM-002 fut pr\u00e9serv\u00e9 et est aujourd\u2019hui expos\u00e9 au Cradle of Aviation Museum<\/a> <\/strong>\u00e0 Garden City, Long Island, New York. Les visiteurs peuvent y admirer cette capsule, t\u00e9moin direct des essais qui ont assur\u00e9 la s\u00e9curit\u00e9 des astronautes et pav\u00e9 la route vers la Lune.<\/p>\n\n\n

\n
\"Command<\/a>
Simon Pierre posant devant le CM-002.<\/figcaption><\/figure>\n<\/div>
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<\/path><\/svg><\/i> \"Loading\"<\/p>

<\/div>","protected":false},"excerpt":{"rendered":"

Le Command Module CM-002 et la Mission A-004 occupent une place importante dans les d\u00e9buts du programme spatial Apollo. Il s\u2019agissait...<\/p>\n

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<\/path><\/svg><\/i> \"Loading\"<\/p>\n

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