德尔塔 IV M | DMSP F-17

描述

Delta IV is a group of five expendable launch systems in the Delta rocket family introduced in the early 2000s. Originally designed by Boeing's Defense, Space & Security division for the Evolved Expendable Launch Vehicle (EELV) program, the Delta IV became a United Launch Alliance (ULA) product in 2006. The Delta IV was and is primarily a launch vehicle for United States Air Force military payloads, but has also been used to launch a number of U.S. government non-military payloads and a single commercial satellite.

德尔塔4号（Delta IV）是德尔塔火箭家族中的一组五型一次性运载系统，于21世纪初推出。它最初由波音防务、航天与安全部门为改进型一次性运载火箭（EELV）计划设计，2006年成为联合发射联盟（ULA）的产品。德尔塔4号过去和现在主要作为美国空军军用载荷的运载火箭，但也用于发射若干美国政府非军用载荷以及一颗商业卫星。