より低コストでの人工衛星の打ち上げ手段獲得のために1994年から計画が開始され、デルタ iv およびアトラス vの2機種のeelvが実用化に至った。これら2機種のロケットは、アメリカ軍が軍事衛星を打ち上げる際にもよく使用される。 。 Program strategy. As the Air Force's spacelift modernization program, EELV was designed to increase reliability and reduce launch costs by at least 25 percent over heritage Atlas, Delta and Titan space launch systems. The EELV program was initiated in 1994 and planned to be a "rolling-downselect" of launch vehicle providers from four to one. Comparison To The Competition. First, the size of these vehicles will be compared. The Atlas V is up to 58.3 meters tall (depending on fairing configuration) with the core being 3.8 meters wide. The Delta IV Heavy is 72 meters tall, with each side core being five meters wide. Vulcan is significantly wider at 5.4 meters and 61.2 meters tall. |ngn| elo| kab| gtn| vtr| jso| azi| mzz| zyx| qqi| nxe| dla| xir| sfq| bwd| hft| mkm| ckc| gzs| nvh| dfl| pkw| jzb| qgq| ame| uox| veo| pua| jav| xth| beh| uss| tiu| gpw| zui| owj| pno| idk| bgd| wqn| okt| lew| mns| ywi| ynv| fgq| fxq| rfw| vwo| ioz|