Space Delta 4 operates and supports three constellations of Overhead Persistent Infrared satellites and two types of Ground-Based Radars for the purpose of conducting strategic and theater missile

Delta IV was a group of five expendable launch systems in the Delta rocket family. It flew 45 missions from 2002 to 2024. Originally designed by Boeing's Defense, Space and Security division for the Evolved Expendable Launch Vehicle (EELV) program, the Delta IV became a United Launch Alliance (ULA) product in 2006.

德尔塔IV型重型火箭是美国现役最高的运载火箭，这是联合发射同盟(United Launch Alliance)德尔塔IV型火箭的重型版本，德尔塔IV型重型火箭高235英尺(约合72米)，2009年1月德尔塔IV型重型火箭将美国国家侦查办公室(National Reconnaissance Office)的一颗军事机密卫星发射升空。

Mission Delta 4 (MD4) is a United States Space Force unit responsible for providing strategic and theater missile warning and tracking to the United States and its international partners. It operates three constellations of Overhead Persistent Infrared (OPIR) satellites and two types of Ground-Based Radars (GBRs) for the purpose of conducting ...

The Delta IV Heavy rocket was a workhorse for the National Reconnaissance Office (NRO) launching 12 missions delivering critical national security payloads. The heavy-performance rocket is recognized for delivering high-priority missions for national security and NASA's first Orion spacecraft on an uncrewed flight test and sent the Parker Solar ...

The Delta IV Heavy (Delta 9250H) was an expendable heavy-lift launch vehicle, the largest type of the Delta IV family. It had the highest capacity of any operational launch vehicle in the world after the retirement of the Space Shuttle in 2011 until the Falcon Heavy debuted in 2018, and it was the world's third highest-capacity launch vehicle ...

德尔塔4 （Delta IV）属于德尔塔（Delta）火箭系列，于本世纪初首次发射。 德尔塔4最初由波音设计，后于2006年成为 联合发射联盟 （ULA）的产品。 德尔塔4主要用于发射美国空军的军用有效载荷，但也被用于发射一些美国政府非军用有效载荷和其他商业卫星。 德尔塔4最初有两个主要版本：中型（有四种配置）和重型。 这使得它的运力能够涵盖一系列有效载荷尺寸和质量。 德尔塔4重型已经在 UTC 时间2024年4月9日进行了最后一次发射，现已退役，鉴于 宇宙神5 已经 …

2020年7月24日 · Mission Delta 4 (MD4) provides strategic and theater missile warning to the United States and our International Partners. It operates and supports three constellations of Overhead Persistent Infrared (OPIR) satellites and two types of Ground-Based Radars,

DEL 4 manages weapon system architectures and ensures operations are intelligence-led, cyber-resilient, and driven by innovation, while postured to operate in a contested, degraded, and operationally-limited environment. DEL 4 is one of eight mission-oriented Deltas within the United States Space Force.

2024年4月9日 · Running more than three months late, a United Launch Alliance Delta 4-Heavy rocket took off Thursday and carried a U.S. government spy satellite into an orbit thousands of miles above Earth in...