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Delta II

Delta II
Delta II start 2007. aastal
Tootja McDonnell Douglas
United Launch Alliance
Päritolumaa Ameerika Ühendriigid
Raketistardi maksumus 51 mln dollarit (1987)
Suurus
Pikkus 38,2–39 m
Läbimõõt 2,44 m
Mass 151 700 – 231 870 kg
Astmeid 2 – 3
Kasulik last
Sihtkoht Maa-lähedane orbiit
Kandevõime 2700–6100 kg
Sihtkoht heliotsentriline orbiit
Kandevõime 1000 kg
Stardiajalugu
Hetkeseis pole enam kasutuses
Raketistarte 156
Edukaid starte 154
Nurjunud starte 1
Osaliselt nurjunud starte 1
Esmalend 14. veebruar 1989
Viimane lend 15. september 2018

Delta II oli ühekordselt kasutatav kanderakett, mida esialgu tootis ja arendas McDonnell Douglas ja hiljem United Launch Alliance.

1980ndate algul plaanisid Ameerika Ühendriigid loobuda kanderakettide kasutamisest ja kasutada nende asemel Space Shuttle'it.[1] Sellest poliitikast otsustati loobuda pärast Challengeri katastroofi ja augustis 1986 teatas president Ronald Reagan, et Space Shuttle ei vii enam kosmosesse erafirmade laadungeid.[2] 1987. aastal sõlmis McDonnell Douglas Ameerika Ühendriikide õhuväega lepingu seitsme Delta II müügiks ja 1990. aastal hakkas Delta II kasutama ka NASA.

Delta II võeti kasutusele 1989. aastal[3] ja sellest valmistati Delta 6000 ja hiljem Delta 7000 ("Light" ja "Heavy") variandid. Kanderaketi viimane start toimus 15. septembril 2018 mis oli Delta II 100. järjestikune edukas missioon.[4]

  1. United States Senate (1980). Department of Defense appropriations for fiscal year 1980. Lk 200.
  2. "Reagan Orders NASA To Halt Launch of Commercial Payloads". AP. Vaadatud 7. detsember 2018.
  3. "Delta II Data Sheet". Space Launch Report. Originaali arhiivikoopia seisuga 28. juuli 2014. Vaadatud 7. detsember 2018.
  4. "Early morning launch closes book on Delta 2 legacy spanning nearly 30 years". Spaceflight Now. Vaadatud 7. detsember 2018.
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Delta II
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