About: Long Duration Exposure Facility

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NASA's Long Duration Exposure Facility, or LDEF (pronounced "eldef"), was a school bus-sized cylindrical facility designed to provide long-term experimental data on the outer space environment and its effects on space systems, materials, operations and selected spores' survival. It was placed in low Earth orbit by Space Shuttle Challenger in April 1984. The original plan called for the LDEF to be retrieved in March 1985, but after a series of delays it was eventually returned to Earth by Columbia in January 1990.

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rdf:type	Thing schema:Event dul:Event societal event wikidata:Q1656682 wikidata:Q2133344 yago:WikicatSpaceExposureExperiments architectural structure yago:Abstraction100002137 yago:Act100030358 yago:Action100037396 yago:Activity100407535 yago:Change100191142 yago:Event100029378 yago:Experiment100639556 yago:Investigation100633864 yago:Journey100306426 yago:Motion100279835 yago:PsychologicalFeature100023100 yago:Research100636921 yago:Work100575741 yago:YagoPermanentlyLocatedEntity event space mission yago:ScientificResearch100641820 yago:Spaceflight100313502 yago:Travel100295701 yago:Voyage100312553 yago:WikicatPhysicsExperiments
rdfs:label	Long Duration Exposure Facility (de) Long Duration Exposure Facility (es) Long Duration Exposure Facility (fr) Long Duration Exposure Facility (it) Long Duration Exposure Facility (en) Long Duration Exposure Facility (pl) Long Duration Exposure Facility (pt)
rdfs:comment	Le Long Duration Exposure Facility (LDEF) était un satellite artificiel de la NASA qui avait pour objectif d'exposer au vide spatial pendant une longue durée plusieurs expériences, pour être ensuite récupéré et ramené sur Terre. Il a été lancé et récupéré par la navette spatiale américaine dans les années 1980 et est resté en orbite plus de cinq ans et demi. (fr) Long Duration Exposure Facility (LDEF) – był kosmicznym eksperymentem naukowym NASA, w kształcie cylindra wielkości autobusu, jego celem było wystawienie na działanie przestrzeni kosmicznej rozmaitych próbek materiałów. Eksperyment trwał ponad pięć i pół roku i okrążył w tym czasie Ziemię 32 422 razy. (pl) O Long Duration Exposure Facility, ou somente LDEF; também podendo ser interpretado como Aparelho de Longa Duração à Exposição é um conjunto de 57 experiências da NASA colocadas na órbita da Terra para estudar os efeitos da exposição de uma espaçonave ao ambiente espacial. Posto em órbita em 7 de abril de 1984 pela STS-41-C Challenger, seu recolhimento estava previsto para o ano seguinte. Contudo, os diversos atrasos no programa do ônibus espacial, fizeram com que a recuperação do aparelho ocorresse somente em janeiro de 1990. (pt) Die Long Duration Exposure Facility (LDEF) war ein Satellit, der als Träger für technische und naturwissenschaftliche Experimente im Weltraum diente. Er kam nur ein einziges Mal zum Einsatz. LDEF bestand aus einer zylindrischen Aluminiumstruktur, an deren Außenseiten 86 Experimententräger angebracht waren: Zwölf Reihen zu je sechs Einheiten befanden sich im Mantel und je sieben an den beiden Enden. Der Satellit hatte eine Länge von 9,20 Meter und einen Durchmesser von 4,29 Meter. Die Struktur hatte eine Masse von 3,6 Tonnen; voll bestückt lag sie bei 9,7 Tonnen. (de) LDEF (Long Duration Exposure Facility) fue un satélite artificial recuperable de la NASA, lanzado mediante el transbordador espacial Challenger el 6 de abril de 1984, durante la misión STS-41-C. La misión de LDEF consistía en recoger datos a largo plazo sobre el entorno espacial, incluyendo los micrometeoritos, y su efecto en la degradación de diversos materiales y sistemas de satélite (energía, propulsión, óptica...). Portaba 57 experimentos montados en 86 bandejas, con la participación de más de 200 investigadores de 33 compañías privadas, 21 universidades, 7 centros de la NASA, 9 laboratorios del Departamento de Defensa y 8 países extranjeros. (es) NASA's Long Duration Exposure Facility, or LDEF (pronounced "eldef"), was a school bus-sized cylindrical facility designed to provide long-term experimental data on the outer space environment and its effects on space systems, materials, operations and selected spores' survival. It was placed in low Earth orbit by Space Shuttle Challenger in April 1984. The original plan called for the LDEF to be retrieved in March 1985, but after a series of delays it was eventually returned to Earth by Columbia in January 1990. (en) Il Long Duration Exposure Facility, o LDEF, è stato un satellite di forma cilindrica e dalle dimensioni di uno scuolabus, progettato e realizzato per fornire dati sperimentali sull'ambiente spaziale e sui suoi effetti sui sistemi spaziali, sui materiali impiegati nella costruzione di questi ultimi, sulle operazioni da essi svolte e sulla sopravvivenza di alcuni tipi di spore. Il satellite fu posto in un'orbita terrestre bassa dallo Space Shuttle Challenger nel corso della missione STS-41-C, nell'aprile del 1984. Il piano di volo originario del LDEF prevedeva che esso fosse recuperato nel marzo 1985 ma, dopo una serie di ritardi, esso fu riportato sulla Terra solo nel gennaio 1990 dallo Space Shuttle Columbia, nel corso della missione STS-32. (it)
foaf:name	Long Duration Exposure Facility (en)
foaf:homepage	https://crgis.ndc.nasa.gov/historic/Long_Duration_Exposure_Facility_(LDEF)
name	Long Duration Exposure Facility (en)
foaf:depiction
dcterms:subject	Space-flown life 1990 in spaceflight 1984 in spaceflight Satellites formerly orbiting Earth Space hardware returned to Earth intact Spacecraft launched in 1984 Physics experiments Astrobiology space missions Space exposure experiments Spacecraft launched by the Space Shuttle
Wikipage page ID	408579 (xsd:integer)
Wikipage revision ID	1121594507 (xsd:integer)
Link from a Wikipage to another Wikipage	Canada Power (physics) School bus Electronics Denmark Space-flown life Republic of Ireland DNA UV United Kingdom United States STS-32 STS-41-C 1990 in spaceflight Edwards Air Force Base Geocentric orbit Germany Glucose NASA 1984 in spaceflight Satellites formerly orbiting Earth Los Angeles Times Shuttle Carrier Aircraft Paint Spore Materials International Space Station Experiment Materials science Baja California Langley Research Center European Retrievable Carrier France Outer space Grapple fixture Gravity-gradient stabilization Thermodynamics Attitude control International Space Station Bacillus subtilis

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