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Atlas-Able

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Atlas-Able
The Atlas-D Able rocket carryingPioneer P-3,sitting on Cape Canaveral's Launch Complex 14.
ManufacturerConvair Division ofGeneral Dynamics
Country of originUnited States
Size
Height28 m (91 ft)
Diameter3.05 m (10 ft)
Payload to
Trans-lunar injection
170 kg (370 lb)
Launch history
StatusRetired
Launch sitesLC-12,13&14,Cape Canaveral
Total launches3
Failure(s)3
First flight26 November 1959
Last flight15 December 1960

TheAtlas-Ablewas an Americanexpendable launch systemderived from theSM-65 Atlasmissile. It was a member of theAtlas familyof rockets, and was used to launch severalPioneerspacecraft towards theMoon.Of the five Atlas-Able rockets built, two failed duringstatic firings,and the other three failed to reach orbit.[1]

The Atlas-Able was a three-and-a-half-stage rocket, with astage-and-a-halfAtlas missile as the first stage, anAblesecond stage, and anAltairthird stage.[2]

The first Atlas-Able used anAtlas Cas the first stage,[3]and was intended to carryPioneer P-1,but exploded during a static fire test on 24 September 1959.[4]

The remaining Pioneer launches usedAtlas Dmissiles. Launches were conducted from Launch Complexes12and14at theCape Canaveral Air Force Station.One launch was planned fromLaunch Complex 13;this became the second Atlas-Able to be destroyed during a static firing, and hence never launched.[1]

Launches[edit]

Launches of Atlas-Able[2][3][5]
Date Serial No. Mission Launch Site Outcome Photo
- Atlas 9C Pioneer P-1 LC-14 Failure. Explosion during a static fire test.
26 November 1959 Atlas 20D Pioneer P-3 LC-14 Failure. The Payload fairing broke up at 45 seconds after liftoff, causing loss of the upper stage and payload.[6]
25 September 1960 Atlas 80D Pioneer P-30 LC-12 Failure. A propellant feed on the second stage had a malfunction.[7]
15 December 1960 Atlas 91D Pioneer P-31 LC-12 Failure. Vibration and/or debris from the Able adapter section ruptured the liquid oxygen tank of Atlas, causing an explosion.[8]

References[edit]

  1. ^abEncyclopedia Astronautica - Atlas
  2. ^abGunter's Space Page - Atlas-D Able
  3. ^abGunter's Space Page - Atlas-C Able
  4. ^Space Review, The Pioneer lunar orbiters: a forgotten failure, by Andrew J. LePage, Monday, December 13, 2010
  5. ^"Atlas-Able".nextspaceflight.Retrieved2022-02-18.
  6. ^"Atlas-D Able | Pioneer P-3".nextspaceflight.Retrieved2022-02-18.
  7. ^"Atlas-D Able | Pioneer P-30".nextspaceflight.Retrieved2022-02-18.
  8. ^"Atlas-D Able | Pioneer P-31".nextspaceflight.Retrieved2022-02-18.