Delta IV

Delta IV-M+(4,2)Delta IV rocketDelta IV HeavyDelta IV HLVDelta IV-M+(5,4)Delta Cryogenic Second StageDelta IV (Heavy)Delta IV-HDelta IV-M+Delta IVH
Delta IV is a group of five expendable launch systems in the Delta rocket family introduced in the early 2000s.wikipedia
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Delta IV Heavy

Delta IV Heavy rocketHeavy
The Delta IV originally had two main versions which allowed the family to cover a range of payload sizes and masses: the retired Medium (which had four configurations) and Heavy.
The Delta IV Heavy (Delta 9250H) is an expendable heavy-lift launch vehicle, the largest type of the Delta IV family and the world's second highest-capacity rocket in operation.

National Security Space Launch

Evolved Expendable Launch VehicleEELVNSSL
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.
Started in 1994 as the Evolved Expendable Launch Vehicle (EELV) launch system program, the initial program goal was to make government space launches more affordable and reliable, leading to the development of the Delta IV and Atlas V EELV families.

Vandenberg Air Force Base

Vandenberg AFBVandenbergVAFB
Final assembly is completed at the launch site by ULA: at the Horizontal Integration Facility for launches from SLC-37B pad at Cape Canaveral and in a similar facility for launches from SLC-6 pad at Vandenberg Air Force Base.
Vandenberg AFB is a Department of Defense space and missile testing base, with a mission of placing satellites into polar orbit from the West Coast using expendable boosters (Pegasus, Taurus, Minotaur, Atlas V, and Delta IV) and reusable boosters (SpaceX's Falcon 9).

Vulcan (rocket)

VulcanVulcan CentaurVulcan rocket
As of 2019, only the Heavy remains active, with payloads that would previously fly on Medium moving to either the existing Atlas V or the forthcoming Vulcan.
Vulcan is ULA's first launch vehicle design, adapting and evolving various technologies previously developed for the Atlas V and Delta IV rockets of the USAF's EELV program.

United Launch Alliance

ULAThe United Launch AllianceUnited Launch Alliance (ULA)
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 Atlas, Delta IV Heavy, and recently retired Delta IV Medium launch system families have launched a variety of payloads including weather, telecommunications, and national security satellites and scientific probes and orbiters.

Vandenberg AFB Space Launch Complex 6

SLC-6Space Launch Complex 6an existing launch site
Final assembly is completed at the launch site by ULA: at the Horizontal Integration Facility for launches from SLC-37B pad at Cape Canaveral and in a similar facility for launches from SLC-6 pad at Vandenberg Air Force Base.
The pad was subsequently used for several Athena launches before being modified to support the Delta IV launch vehicle family, which have used the pad since 2006.

Horizontal Integration Facility

Final assembly is completed at the launch site by ULA: at the Horizontal Integration Facility for launches from SLC-37B pad at Cape Canaveral and in a similar facility for launches from SLC-6 pad at Vandenberg Air Force Base.

Common Booster Core

Delta IV Common Booster Core
This would have featured the Delta II second stage, an optional Thiokol Star 48B third stage, and the Delta II payload fairing, all atop a single Common Booster Core (CBC).
The Common Booster Core (CBC) is an American rocket stage, which is used on the Delta IV rocket as part of a modular rocket system.

Atlas V

Atlas V 401Atlas V 541Atlas V 551
As of 2019, only the Heavy remains active, with payloads that would previously fly on Medium moving to either the existing Atlas V or the forthcoming Vulcan.
Later in the decade, the FTINU was replaced with avionics common to both the Atlas V and Delta IV.

Cape Canaveral Air Force Station Space Launch Complex 37

Space Launch Complex 37BSLC-37BLC-37B
Final assembly is completed at the launch site by ULA: at the Horizontal Integration Facility for launches from SLC-37B pad at Cape Canaveral and in a similar facility for launches from SLC-6 pad at Vandenberg Air Force Base.
In 2001 it was modified as the launch site for Delta IV, a launch system operated by United Launch Alliance.

Delta II

Delta 2Delta II 7925Delta II rocket
This would have featured the Delta II second stage, an optional Thiokol Star 48B third stage, and the Delta II payload fairing, all atop a single Common Booster Core (CBC).
Delta III, with its liquid hydrogen second stage and more powerful GEM-46 boosters, could bring twice as much mass as Delta II to geostationary transfer orbit, but a string of two failures and one partial failure, along with the development of the much more powerful Delta IV, led to the cancellation of Delta III program.

Liquid-propellant rocket

liquidliquid-fuel rocketbipropellant
In 2002, the Delta IV was first launched, with the RS-68 becoming the first large liquid-propellant rocket engine designed in the U.S. since the Space Shuttle main engine (SSME) in the 1970s.

Economic Espionage Act of 1996

Economic Espionage Acteconomic espionageIndustrial Espionage Act of 1996
In February 2010, Naturalized citizen Dongfan Chung, an engineer working with Boeing, was the first person convicted under the Economic Espionage Act of 1996.
Chung, a native of China, was convicted by the US District Court for the Central District of California of stealing Boeing trade secrets related to the US Space Shuttle program and the Delta IV rocket.

List of Thor and Delta launches (2010–19)

List of Thor and Delta launches (2010-2019)List of Thor and Delta launches (2010–2019)
For future launches, see List of Thor and Delta launches (2010–2019).
As of October 2018, only the Delta IV remains in production.

Space Launch System

SLSSLS Block 1Space Launch System (SLS)
Orion was intended to fly on the Ares I launch vehicle, then the Space Launch System after Ares I was cancelled.
It is a modified Delta IV 5 m Delta Cryogenic Second Stage (DCSS) powered by a single RL10B-2.

Cape Canaveral Air Force Station

Cape CanaveralCCAFSCape Kennedy
Final assembly is completed at the launch site by ULA: at the Horizontal Integration Facility for launches from SLC-37B pad at Cape Canaveral and in a similar facility for launches from SLC-6 pad at Vandenberg Air Force Base.
In 2001, LC-37 was recommissioned and converted to service Delta IV launch vehicles.

RS RocketShip

M/V ''Delta MarinerMV ''Delta Mariner
They are then loaded onto the M/V Delta Mariner, a roll-on/roll-off cargo vessel, and shipped to either launch pad.
Her primary role is transporting components for the ULA Atlas V, Delta IV and Vulcan rockets from the manufacturer, located in Decatur, Alabama, to launch facilities at Cape Canaveral Air Force Station in Florida and Vandenberg Air Force Base in California.

Aerojet Rocketdyne

AerojetRocket Research Co.
Each CBC is powered by one Aerojet Rocketdyne RS-68 engine, which burns liquid hydrogen and liquid oxygen.

Ares I

AresAres rocketCrew Launch Vehicle
Orion was intended to fly on the Ares I launch vehicle, then the Space Launch System after Ares I was cancelled.
The safety of the Atlas V and Delta IV was estimated from the failure rates of all Delta II, Atlas-Centaur, and Titan launches since 1992, although they are not similar designs.

RL10

RL-10RL10B-2Common Extensible Cryogenic Engine
Regardless of the diameter, each DCSS is powered by one RL10B2 engine, with an extendable carbon-carbon nozzle to improve specific impulse.
The RL10A-4-2 and the RL10C-1 are still in production for the Centaur upper stage of the Atlas V and the DCSS of the Delta IV.

Boeing Defense, Space & Security

Boeing Integrated Defense SystemsBoeingBoeing IDS
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.

Graphite-Epoxy Motor

GEMGEM-40GEM 46
The Delta IV Medium+ (4,2) (Delta 9240) had the same CBC and DCSS as the Medium, but with the addition of two Orbital ATK-built 1.5-m (60-in) diameter solid rocket booster Graphite-Epoxy Motors (GEM-60s) strap-on boosters to increase payload capacity to 6,150 kg to GTO.
GEM series boosters were previously used on the Delta II, Delta III, and Delta IV.

Expendable launch system

expendableexpendable launch vehicleexpendable launch vehicles
Delta IV is a group of five expendable launch systems in the Delta rocket family introduced in the early 2000s.
Both the Delta IV and Atlas V from the 1994 Evolved ELV (EELV) program remain in active service, operated by the United Launch Alliance.

Northrop Grumman Innovation Systems

Orbital ATKNorthrop GrummanOrbital Sciences
The Delta IV Medium+ (4,2) (Delta 9240) had the same CBC and DCSS as the Medium, but with the addition of two Orbital ATK-built 1.5-m (60-in) diameter solid rocket booster Graphite-Epoxy Motors (GEM-60s) strap-on boosters to increase payload capacity to 6,150 kg to GTO.

Human-rating certification

human-ratedman-ratedhuman-rating
In 2009 The Aerospace Corporation reported on NASA results of a study to determine the feasibility of modifying Delta IV to be human-rated for use in NASA human spaceflight missions.
The United Launch Alliance (ULA) published a paper submitted to AIAA detailing the modifications to its Delta IV and Atlas V launch vehicles that would be needed to conform to NASA Standard 8705.2B.