On December 21, 2004, The Boeing Company Delta IV Heavy launch vehicle lifted off from Cape Canaveral Air Force Station, Florida, at 4:50 p.m. EST, on a demonstration launch for the Air Force’s Evolved Expendable Launch Vehicle (EELV) program.
National Security Space Launch - Los Angeles Air Force Base
A Boeing Delta IV Heavy launch vehicle lifts off from Launch Complex 37 at Cape Canaveral Air Force Station, Florida. Originally known as the Evolved Expendable Launch Vehicle, or EELV program, the National Security Space Launch program is designed to improve our nation's access to space by making space launch vehicles more affordable and reliable.
德尔塔-4重型运载火箭 - 维基百科，自由的百科全书
三角洲4号重型运载火箭 (Delta 9250H)为 一次性 （ 英语 ： Evolved Expendable Launch Vehicle ） 大型运载火箭，为三角洲4号系列运载火箭中最大者。 [4] [5] 本火箭由联合发射联盟生产，于2004年进行首次发射，2024年退役。 [6]
'Heavy' history: ULA launches final Delta rocket after 64 years …
2024年4月9日 · United Launch Alliance (ULA) ignited its last Delta IV Heavy rocket to launch NROL-70, a classified payload for the U.S. National Reconnaissance Office (NRO).
Delta IV - Wikipedia
Delta IV Heavy launching. The Delta IV Heavy (Delta 9250H) combines a 5 m (16 ft) diameter DCSS and payload fairing with two additional CBCs. These are strap-on boosters which are separated earlier in the flight than the center CBC.
Evolved Expendable Launch Vehicle (EELV) - Vandenberg Space …
2021年10月14日 · The Evolved Expendable Launch Vehicle (EELV) program provides the United States affordable, reliable, and assured access to space with two families of launch vehicles: Atlas V and Delta IV. These launch vehicles provide critical spacelift capability to support Department of Defense and other National Security missions (together known as ...
The Boeing legacy Delta IV focused on a suite several different upgrades, including adding GEM-60 solids to the Heavy configuration, an RS-68 upgrade, a new upper stage, and propellant crossfeed, which when combined can remarkably double lift capacity while retaining the basic Delta IV Heavy configuration with three, 5m-diameter cores, the ...
> Launches > launch-nrol-70 - National Reconnaissance Office
United Launch Alliance’s Delta IV Heavy is a heavy-lift launch vehicle, the largest type of the Delta IV family and one of the world’s most powerful rockets. The Delta IV Heavy configuration is comprised of a common booster core (CBC), a cryogenic upper stage and a 5-meter diameter payload fairing (PLF).
Delta IV Heavy - Wikipedia
The Delta IV Heavy (Delta 9250H) was an expendable heavy-lift launch vehicle, the largest type of the Delta IV family. It was the world's third highest-capacity launch vehicle in operation at the time of its retirement in 2024, behind NASA's Space Launch System and SpaceX's Falcon Heavy and closely followed by CASC's Long March 5.
The DSP-23 launch will be the first operational satellite launch atop a ULA Delta IV Heavy Evolved Expendable Launch Vehicle (EELV). United Launch Alliance is proud to launch DSP-23, the last satellite of this constellation that has been the cornerstone of North America’s early warning system for more than 35 years.