Other rockets of this class, such as Boeing’s Delta IV and the Atlas V, operated jointly by Boeing and Lockheed Martin, are children of the military-industrial complex.

然而同一级别的其他火箭，例如由波音公司与洛克斯勒马汀公司联合经营的波音德尔塔IV与阿特勒斯V火箭，是军工联合企业的子辈。

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The delta-winged Columbia, before reaching the orbit, jettisoned its dual booster rockets two minutes into flight.

三角翼的哥伦比亚号航天飞机在进入轨道前，起飞两分钟就抛下其两个助推火箭。

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The delta-winged columbia, before reaching the orbit , jettisoned its dual booster rockets two minutes into flight.

三角翼的哥伦比亚号航天飞机在进入轨道前，起飞两分钟就抛下其两个助推火箭。

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He didn't give details about the most likely types of missions and why the new system would manage to attract a wider range of customers than NASA's phased-out Delta II rockets, which Stratolaunch hopes to replace.

WSJ: Microsoft Co-Founder to Build Massive Jet for Space Launches

Some of these customers are to be found just up the road, part of the dense engineering conglomeration of this most industrious of towns, but others, such as Boeing Aerospace, for which Pietro Carnaghi has built a machine to shape the top of Delta-4 rockets, are in America.

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One alternative to Ares, proposed by the United Launch Alliance, a joint venture of Lockheed Martin and Boeing, is to use modified versions of their existing Delta 4 and Atlas 5 rockets both to go to the moon and to resupply the space station, but at lower cost.

ECONOMIST: Human spaceflight