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The Delta IV Medium (Delta 9040) was the most basic Delta IV. It featured a single CBC and a modified Delta III second stage, with 4-meter liquid hydrogen and liquid oxygen tanks (called a Delta Cryogenic Second Stage (DCSS)) and a 4-meter payload fairing. The Delta IV Medium was capable of launching 4,200 kg to geostationary transfer orbit ...
Delta IV Medium, coded Delta 9040, was the most basic Delta IV. It featured a single CBC and a modified Delta 3 second stage, with 4-meter liquid hydrogen and liquid oxygen tanks (called a Delta Cryogenic Second Stage (DCSS)) and a 4-meter payload fairing. The Delta IV Medium was capable of launching 4,200 kg to geostationary transfer orbit ...
The second stage and fairing were taken from the Delta III in smaller (Delta IV Medium) models; widened to 5 metres in Medium+ and Heavy models. Medium+ models had two or four GEM 60, 60-inch-diameter (1.5 m) solid boosters. The plumbing was revised and electrical circuits eliminated need for a launch tower.
The Delta Cryogenic Second Stage (DCSS) is a family of cryogenic-fuelled rocket stages used on the Delta III, Delta IV, and on the Space Launch System Block 1 launch vehicles. The DCSS employs a unique two-tank architecture where the cylindrical liquid hydrogen (LH 2 ) tank carries payload launch loads and forms the upper section.
The Delta IV Heavy made its debut during a December 2004 demonstration flight from Launch Complex 37. Mission: ULA's last Delta IV Heavy triple-core rocket will launch on the NROL-70 national ...
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Delta IV was a group of five expendable launch systems in the Delta rocket family introduced in the early 2000s. 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.
The Delta IV Heavy rocket will attempt to launch at 12:53 p.m. EDT Tuesday, April 9, to deliver NROL-70, a National Reconnaissance Office mission, to space from Space Launch Complex-37 at Cape ...