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・ Delta sleep-inducing peptide
・ Delta smelt
・ Delta Solar
・ Delta South
・ Delta Southern Railroad
・ Delta Special School District
・ Delta Sphinx Family
・ Delta Spirit
・ Delta Spirit (album)
・ Delta Kappa Delta
・ Delta Kappa Epsilon
・ Delta Kappa Epsilon Fraternity House
・ Delta Kappa Epsilon Fraternity House (Champaign, Illinois)
・ Delta Kappa Phi
・ Delta King
Delta L
・ Delta L problem
・ Delta Lake
・ Delta Lake (New York)
・ Delta Lake (Teton County, Wyoming)
・ Delta Lake State Park
・ Delta Lambda
・ Delta Lambda Phi
・ Delta landfill
・ Delta Leonis
・ Delta Leporis
・ Delta Librae
・ Delta Lloyd Group
・ Delta Lloyd Regatta
・ Delta Lotsman


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Delta L : ウィキペディア英語版
Delta L

The Delta L, Thor-Delta L, or Thrust-Augmented Long Tank Thor-Delta was a US expendable launch system used to launch the Pioneer E and TETR satellites in 1969 (failed) and HEOS satellite in 1972. It was a member of the Delta family of rockets.
The Delta L was a three-stage rocket. The first stage was a Long Tank Thor, a stretched version of the Thor missile, augmented by three Castor-2 solid rocket boosters. The second stage was the Delta E. An FW-1D solid rocket motor was used as the third stage.
The first launch of the Delta L took place on 27 August 1969, from Launch Complex 17A at the Cape Canaveral Air Force Station. A defective valve caused plumbing in the hydraulics system to rupture and leak fluid, causing first stage engine gimbaling to fail around 2-1/2 minutes into launch. The stage completed its burn successfully, but threw the second stage far off course. Orbital velocity could not be achieved and Range Safety sent the destruct command at T+383 seconds. Neither the Pioneer E nor the TETR〔 Test satellite for NASA's Manned Space Flight Network see: http://www.astronautix.com/craft/tetr.htm〕 payloads achieved orbit. The second, and final, Delta L launch was from Space Launch Complex 2E at the Vandenberg Air Force Base, on 31 January 1972. It successfully placed the HEOS-2 satellite into a highly elliptical orbit.
==Notes==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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