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United Launch Alliance (ULA), legally United Launch Alliance, LLC, is an American spacecraft launch service provider that manufactures and operates a number of rocket vehicles that are capable of launching spacecraft into orbits around
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, and to other bodies in the
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and
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. The company, which is a
joint venture A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and risks, and shared governance. Companies typically pursue joint ventures for one of four reasons: to acces ...
between Lockheed Martin Space and Boeing Defense, Space & Security, was formed in December 2006. Launch customers of the United Launch Alliance include the
Department of Defense Department of Defence or Department of Defense may refer to: Current departments of defence * Department of Defence (Australia) * Department of National Defence (Canada) * Department of Defence (Ireland) * Department of National Defense (Philipp ...
(DoD),
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
, and other organizations. ULA provides launch services using expendable launch systems Delta IV Heavy and
Atlas V Atlas V is an expendable launch system and the fifth major version in the Atlas launch vehicle family. It was originally designed by Lockheed Martin, now being operated by United Launch Alliance (ULA), a joint venture between Lockheed Mart ...
, and until 2018 the medium-lift
Delta II Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 va ...
. The Atlas, Delta IV Heavy and the recently retired
Delta IV 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 and Security division for the Evolved Expendable Launch Vehicle (EELV) program, th ...
launch systems have launched payloads including weather, telecommunications, and national security satellites, scientific probes and orbiters. ULA also launches commercial satellites. , the company is developing the
Vulcan Centaur Vulcan Centaur is a two-stage-to-orbit, heavy-lift launch vehicle that is under development by the United Launch Alliance (ULA) since 2014 with an initial flight expected in early 2023. It is principally designed to meet launch demands for th ...
, a successor to the Atlas V that includes some Delta IV technology. The maiden flight is planned to take place in 2023, launching
Astrobotic Technology Astrobotic Technology is an American privately held company that is developing space robotics technology for lunar and planetary missions. It was founded in 2007 by Carnegie Mellon professor Red Whittaker and his associates with the goal of ...
's '' Peregrine'' lunar lander.


Company history


Formation

Boeing and Lockheed Martin announced their intent to form a 50-50
joint venture A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and risks, and shared governance. Companies typically pursue joint ventures for one of four reasons: to acces ...
on 2 May 2005 aiming to consolidate the manufacture and deployment of US government expendable launch vehicles and launch services. The United Launch Alliance name was announced at the same time. Prior to the creation of the United Launch Alliance and contrary to expectations of the Office of the Secretary of Defense, a strong, competitive commercial launch market did not materialize within the United States. Estimated prices for future contracts and program costs increased, resulting in a Nunn-McCurdy cost breach. There was also considerable turmoil within the
United States Air Force The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Si ...
(USAF) space community and between the two EELV launch service providers due to competition in the shrinking space launch market, cost increases, and the growing need for reliable access to space. This turmoil culminated in civil and criminal fraud accusations being brought against Boeing relating to the improper use of competitors' information and racketeering. As a result, the
United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national sec ...
changed its acquisition strategy to one which would maintain assured access to space. Under the "Buy III" program, all fixed costs were covered by the US government, which brought about a deal between the two major EELV contractors to combine their efforts into a single company. Annual savings were estimated to be US$100-150 million. SpaceX challenged the legality of the launch services monopoly on 23 October 2005 on anti-trust grounds, creating competition with reusable launch systems. The
Federal Trade Commission The Federal Trade Commission (FTC) is an independent agency of the United States government whose principal mission is the enforcement of civil (non-criminal) antitrust law and the promotion of consumer protection. The FTC shares jurisdiction o ...
gave ULA anti-trust clearance on 3 October 2006. It was the FTC's opinion that due to the challenge of entering the government medium-to-heavy launch services market, the entry of SpaceX was unlikely to reverse the anti-competitive effects resulting from the formation of ULA, but, it approved the joint venture on the basis that the benefits of assured access to space for national security outweighed anti-competitive harm. The commission required ULA to "cooperate on equivalent terms with all providers of government space vehicles ... provide equal consideration and support to all launch service providers when seeking any U.S. government delivery in orbit contract ... and to safeguard competitively sensitive information obtained from other providers of space vehicles and launch services".


Michael Gass era (2005-2014)

ULA merged the production and operation of the two companies' government space launch services into one central plant in Decatur, Alabama, and merged all engineering into another central facility in
Littleton, Colorado Littleton is a home rule municipality city located in Arapahoe, Douglas, and Jefferson counties, Colorado, United States. Littleton is the county seat of Arapahoe County and is a part of the Denver–Aurora–Lakewood, CO Metropolitan Stati ...
. The parent companies retained responsibility for marketing and sales of the Delta and Atlas rockets. ULA had a peak of seven space launch facilities between 2005 and 2011, including three
Delta II Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 va ...
launchpads, which were decommissioned starting in 2011. Two years after its formation, in late 2008, ULA announced it would lay off 350 of its 4200 workers in early 2009. In the event, ULA had approximately 3900 employees by August 2009. ULA joined the Commercial Spaceflight Federation (CSF) in June 2010 as an executive member. ULA's CEO Michael Gass described the company's membership as a "natural fit for us, and we are proud to do so". By May 2014, ULA's membership of the CSF had lapsed. With the introduction of competition from lower-cost launch providers and the annually increasing costs of ULA launches, increased attention has been paid to the amounts ULA has received for U.S. government launch contracts and for its annual government funding of $1 billion for launch capability and readiness. This readiness requirement included the maintenance of five launch pads and a number of variants of the Delta II, Delta IV, Delta IV Heavy, and Atlas V rockets. As a result of increasing costs by ULA, in April 2012, the EELV program triggered a critical Nunn-McCurdy cost breach and a reassessment of the program, of which ULA was the sole participant. An uncontested USAF block-purchase of 36 rocket cores for up to 28 launches, which was valued at US$11 billion, was awarded in December 2013 and drew protest from SpaceX, which said the cost of ULA's launches were approximately US$460 million each and proposed a price of US$90 million to provide similar launches. In response, ULA's CEO Michael Gass said its average launch price was US$225 million, with future launches as low as US$100 million.


Tory Bruno era (2014 onward)

Michael Gass stepped down as ULA's CEO in August 2014 and was replaced by Tory Bruno, former vice president and general manager of Lockheed Martin Strategic and Missile Defense Systems. ULA entered into a partnership with
Blue Origin Blue Origin, LLC is an American private spaceflight, privately funded aerospace manufacturer and sub-orbital spaceflight services company headquartered in Kent, Washington. Founded in 2000 by Jeff Bezos, the founder and executive chairman of Am ...
in September 2014 to develop the BE-4 LOX /
methane Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane ...
engine to replace the
RD-180 The RD-180 ( rus, РД-180, Ракетный Двигатель-180, Raketnyy Dvigatel-180) is a rocket engine designed and built in Russia. It features a dual combustion chamber, dual- nozzle design and is fueled by a RP-1/ LOX mixture. The RD ...
on a new, lower cost first-stage booster rocket. At the time, the engine was in its third year of development by Blue Origin. ULA said it expected the new stage and engine to start flying no earlier than 2019 on a successor to the Atlas V. A month later, ULA announced a major restructuring of processes and workforce to halve launch costs, partly due to competition from SpaceX. The United States Government Accountability Office (GAO) calculated the average cost of each ULA rocket launch for the U.S. government had risen to approximately US$420 million in 2014. ULA had less success securing deals for Earth observation, commercial communication, and privately owned satellites than it had with launching U.S. military payloads. In November 2014, Tory Bruno stated the structuring was intended to "lead to improvements in how ULA interacts with its customers, both governmental and commercial", shorten launch cycles, and halve launch costs again. Part of that program involved the development of a new rocket, the Vulcan, initially with private funds, to tackle "skyrocketing launch costs". Bruno believed the new, lower-cost launcher could be competitive in the commercial satellite sector. ULA intended to have preliminary design ideas in place for a blending of the Atlas V and Delta IV technology by the end of 2014 but the high-level design was not announced until April 2015. In February 2016, it was announced the development of the Vulcan rocket would be funded via a
public–private partnership A public–private partnership (PPP, 3P, or P3) is a long-term arrangement between a government and private sector institutions.Hodge, G. A and Greve, C. (2007), Public–Private Partnerships: An International Performance Review, Public Adminis ...
with the U.S. government. By early 2016, the USAF had committed $201 million of funding for Vulcan development. ULA had not "put a firm price on the cost of Vulcan development" but according to Mike Gross of SpaceNews, Bruno "said new rockets typically cost US$2 billion, including US$1 billion for the main engine". In 2016, ULA had asked the U.S. government to provide a minimum of $1.2 billion by 2020 to assist the development of the new U.S. launch vehicle. It was unclear how the change in development funding mechanisms would change ULA plans for pricing market-driven launch services. Since Vulcan development began in October 2014, the privately generated funding for Vulcan development has been approved only on a short-term basis. The ULA board of directors, which was composed of executives from Boeing and Lockheed Martin, would approve development funding on a quarterly basis. ULA planned to reduce its number of launchpads from five in 2015 to two. ULA released contract values to the public and new CEO Tory Bruno testified before Congress in March 2015 that while ULA receives government subsidies "to conduct national security launches", the same is true of SpaceX, which received funding "to develop new capabilities and the use of low-cost or no-cost leases of previously developed launch infrastructure". It is difficult to directly compare launch costs because they are not necessarily calculated using the same cost-model assumptions. ULA announced in February 2015 it was considering undertaking domestic production of the Russian
RD-180 The RD-180 ( rus, РД-180, Ракетный Двигатель-180, Raketnyy Dvigatel-180) is a rocket engine designed and built in Russia. It features a dual combustion chamber, dual- nozzle design and is fueled by a RP-1/ LOX mixture. The RD ...
rocket engine at the Decatur, Alabama, rocket stage manufacturing facility. The U.S.-manufactured engines would be used for government civil (NASA) or commercial launches, and would not be used for U.S. military launches. This idea was abandoned following the passage of legislation permitting the continued purchase of the RD-180 from Russia. In May 2015, ULA stated it would go out of business unless it won commercial and civil satellite launch orders to offset an expected slump in U.S. military and spy launches. The same month, ULA announced it would lay off 12 of its executives, a reduction of 30%, in December 2015. The management layoffs were the "beginning of a major reorganization and redesign" as ULA endeavors to "slash costs and hunt out new customers to ensure continued growth despite the rise of SpaceX". A controversy arose in March 2016 following public remarks by ULA VP of Engineering, Brett Tobey, whose comments were, according to Peter de Selding of SpaceNews, "resentful of SpaceX" and dismissive of one of the two competitors ( Aerojet Rocketdyne) for the new engine that will power the Vulcan launch vehicle, which was under development. Tobey resigned on 16 March 2016 and Bruno disavowed the remarks.
Senator A senate is a deliberative assembly, often the upper house or chamber of a bicameral legislature. The name comes from the ancient Roman Senate (Latin: ''Senatus''), so-called as an assembly of the senior (Latin: ''senex'' meaning "the el ...
John McCain John Sidney McCain III (August 29, 1936 – August 25, 2018) was an American politician and United States Navy officer who served as a United States senator from Arizona from 1987 until his death in 2018. He previously served two te ...
asked the DoD to investigate the comments that implied it may have shown "favoritism to a major defense contractor or that efforts have been made to silence members of Congress". The Secretary of Defense asked the DoD's Inspector General to investigate. In 2016, ULA released the Cislunar 1000 Vision with an aim of creating an economy on the Moon and in Earth orbit with 1,000 people living and working in space. Core to this aim was that the production of fuel in space would allow for dramatically cheaper space travel. ULA made clear it was willing to become a customer for in-space refueling. It previously announced a willingness to pay US$3,000 per kilogram for fuel delivered in low Earth orbit, US$500 per kilogram on the lunar surface, and US$1,000 per kilogram at L1. ULA believes it will need off-Earth propellant supplies sometime in the 2020s. In December 2016, ULA created an online pricing tool called "Rocket Builder", which allowed potential customers and the public to estimate launch costs of the Atlas V rocket with configurable orbits, payloads and launch services. Purchase-price estimates were removed from the tool in 2018 because it potentially provided commercially sensitive information to ULA's competitors. Despite ULA's cost-cutting and restructuring, the cheapest ULA space launch in early 2018 remained the Atlas V 401 at a price of approximately US$109 million. Following the failure of a SpaceX Falcon 9 carrying AMOS-6, incorrect reports about potential
corporate espionage Industrial espionage, economic espionage, corporate spying, or corporate espionage is a form of espionage conducted for commercial purposes instead of purely national security. While political espionage is conducted or orchestrated by governmen ...
by ULA circulated. These reports were proved to be false and on 2 January 2017 SpaceX released an official statement saying the cause of the failure was a buckled liner in several of the
COPV A composite overwrapped pressure vessel (COPV) is a vessel consisting of a thin, non-structural liner wrapped with a structural fiber composite, designed to hold a fluid under pressure. The liner provides a barrier between the fluid and the comp ...
tanks. In July 2017 the company was awarded US$191 million single-launch contract to launch the STP-3 mission aboard the heavy-lift Atlas V 551. In January 2018, ULA took over marketing and sales responsibilities for Atlas V launches. Dan Collins, ULA's inaugural
Chief operating officer A chief operating officer or chief operations officer, also called a COO, is one of the highest-ranking executive positions in an organization, composing part of the " C-suite". The COO is usually the second-in-command at the firm, especially if ...
, retired in April 2018 and was replaced by John Elbon, former vice president and program manager at Boeing Defense, Space & Security. During the 2019–2020 COVID-19 pandemic, some aspects of ULA's launch related outreach were scaled back but the company said it would maintain its launch schedule. On 7 August 2020, the
U.S. Space Force The United States Space Force (USSF) is the space service branch of the U.S. Armed Forces, one of the eight U.S. uniformed services, and the world's only independent space force. Along with its sister branch, the U.S. Air Force, the Space ...
awarded contracts for the second phase of its long-term launch services program for national security launches through 2020. United Launch Alliance, along with SpaceX, was chosen over Blue Origin and Northrop Grumman. The decision was driven primarily by past launch performance. As ULA has had 100% success record in about two decades of operation, it was awarded 60% of the contract. In late 2020, ULA won a contract to launch and provide in-flight refueling for the Dynetics lunar lander. Initially, refueling would be provided by launching additional rockets to carry fuel. Each lunar mission would include two other Vulcan Centaur launches. The propellant from the upper stages of these rockets would be transferred to the Dynetics lander. ULA would significantly increase its launch pace of refueling rockets to minimize the boil-off of cryogenic fuel. The in-space refueling capability would have been tested in low Earth orbit before any lunar missions take place. However, in April 2021, NASA announced that SpaceX would instead be the prime contractor for the crewed lunar lander, having ranked the Dynetics bid low in readiness by 2024. In September 2020, Tory Bruno announced that it had found a vendor in its supply chain that has partial Chinese ownership. The vendor designed software tools for use in development of the Vulcan Centaur rocket. Bruno said the vendor did not acquire any sensitive information. The company in question is KUKA Robotics. The Chinese interest in the vendor was discovered by a private investigator hired by ULA to monitor the security of its supply chain. The case was referred to the FBI. Bruno called on the federal government to cooperate more closely with the private sector to deal with Chinese corporate espionage. By authority of Tory Bruno, United Launch Alliance implemented a vaccination requirement for its employees on 1 September 2021. ULA employees were required to receive a first dose by 30 September and any required second dose by 31 October 2021.


Launch vehicles and engines

As of 2020, ULA operates the
Atlas V Atlas V is an expendable launch system and the fifth major version in the Atlas launch vehicle family. It was originally designed by Lockheed Martin, now being operated by United Launch Alliance (ULA), a joint venture between Lockheed Mart ...
and
Delta IV 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 and Security division for the Evolved Expendable Launch Vehicle (EELV) program, th ...
rockets, which were developed under the National Security Space Launch (NSSL) program by Lockheed Martin and Boeing respectively, both launching in 2002. The Delta IV Medium was retired on 22 August 2019, but Delta IV Heavy rockets will continue to be used to launch heavy payloads. As of 2020, ULA is developing Vulcan, a heavy-lift launch vehicle that will replace its existing fleet. Astrobotic Technology's Peregrine lander will be launched on the first Vulcan certification flight, which is expected to occur in 2021 from SLC-41 at
Cape Canaveral Space Force Station Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida. Headquartered at the nearby Patrick Space Force Base, the stati ...
.


Current fleet


Atlas V

Atlas V is the fifth major version in the Atlas rocket family. It is an expendable launch system that was originally designed by Lockheed Martin. Each Atlas V rocket consists of two main stages. The first stage is powered by a Russian RD-180 engine, which is manufactured by RD Amross, and burns kerosene and liquid oxygen. Each RD-180 engine costs about US$10 million which is considerably cheaper than any competing rocket with the ability to launch a satellite to geostationary orbit. It has a flawless record of launching American satellites over many years of service. The Atlas V has been modified for human spaceflight. Human-rating required new computers to monitor performance and trigger an abort when necessary, data links between the rocket and spacecraft, and other changes. Crewed flights will include a mechanism to allow astronauts to manually abort. The Atlas V has already carried the Boeing CST-100 Starliner on its first unmanned spaceflight. The Atlas V that carried the Starliner was equipped with two SRBs from Aerojet Rocketdyne. This was the only Atlas V ever to fly without a payload fairing. With the Starliner on top, the rocket is 172 feet tall. In 2017, Sierra Nevada selected the Atlas V to launch the first two missions of the
Dream Chaser Dream Chaser is an American reusable lifting-body spaceplane being developed by Sierra Nevada Corporation (SNC) Space Systems. Originally intended as a crewed vehicle, the Dream Chaser Space System is set to be produced after the cargo varia ...
cargo capsule to the
International Space Station The International Space Station (ISS) is the largest Modular design, modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos ( ...
. These launches are part of NASA's Cargo Resupply Services 2 contract. At the time of signing its agreement with ULA, Sierra Nevada expected the missions to take place in 2020 and 2021. An Atlas V rocket was selected for the NROL-101 mission for the National Reconnaissance Office. The rocket was launched successfully on 13 November 2020. The variant of the Atlas V selected for this mission used of three new GEM-63 solid rocket booster made by Northrop Grumman. A larger version of this booster, the GEM 63XL, is being developed for the Vulcan Centaur. Amazon has selected the Atlas V to launch satellites for
Project Kuiper Kuiper Systems LLC is a subsidiary of Amazon that was set up in 2019 to deploy a large broadband satellite internet constellation to provide broadband internet connectivity. The deployment is also referred to by its project name "Project Kuipe ...
. Project Kuiper will offer a high-speed satellite internet service. The contract signed with Amazon is for nine launches. Project Kuiper aims to put thousands of satellites into orbit. ULA is Amazon's first launch provider.


Centaur

The Centaur is a family of rocket-propelled upper stages currently with one main active version and one version under development. The 3.05-meter diameter Common Centaur/Centaur III flies as the upper stage of the Atlas V launch vehicle, while the 5.4-meter diameter Centaur V is being developed as the upper stage of ULA's new Vulcan rocket. A lengthened version of the Centaur V will be used on the Vulcan Centaur Heavy. The Centaur upper stage is powered by one or two RL10 engines, which are manufactured by Aerojet Rocketdyne, and burn liquid hydrogen and liquid oxygen. The Centaur is the first rocket stage to use these fuels. On the Atlas V ULA typically only uses the one RL10 version of the Centaur upper stage. However, Aerojet Rocketdyne supplies two RL10A-4-2 engines for each Starliner mission flown by the Atlas V. The dual-engine Centaur configuration is used on human-rated launches for safety reasons. This configuration allows the rocket to fly on a shallower path to orbit, meaning horizontal velocity is emphasized over vertical velocity. This in turn reduces the maximum G-forces endured by the crew and allows for a safe abort at any time during the launch. The standard payload fairings are 4 or 5 meters (13 or 16 ft) in diameter with varying lengths. The dual-engine variant of the Centaur has flown more than 100 times on Atlas variant rockets. 166 of the Centaur's flights have used dual-engine variants. As of late 2019, Centaurs of all kinds had flown 251 times. The Centaur upper stage for the Atlas V also has an Aft Bulkhead Carrier capacity. The capacity was developed initially for the National Reconnaissance Office to take advantage of the extra capacity Atlas V has.


Delta IV

Delta IV is a group of five expendable launch systems in the Delta rocket family, which was introduced in the early 2000s. The Delta IV was originally designed by Boeing's Defense, Space & Security division for the
Evolved Expendable Launch Vehicle National Security Space Launch (NSSL) — formerly Evolved Expendable Launch Vehicle (EELV) from 1994 to 2019 — is a program of the United States Space Force (USSF) intended to assure access to space for United States Department of Defense and o ...
(EELV) program, and became a ULA product in 2006. The Delta IV is mostly used for launching
United States Air Force The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Si ...
military payloads but has also been used to launch a number of U.S. government non-military payloads and one commercial satellite. The Delta IV originally had two main versions, which allowed the family to accommodate a range of payload sizes and masses; models include the retired Medium, which had four configurations, and the Heavy. As of 2019, only the Heavy remains active; payloads that would previously fly on Medium moved to either the existing
Atlas V Atlas V is an expendable launch system and the fifth major version in the Atlas launch vehicle family. It was originally designed by Lockheed Martin, now being operated by United Launch Alliance (ULA), a joint venture between Lockheed Mart ...
or the forthcoming
Vulcan Centaur Vulcan Centaur is a two-stage-to-orbit, heavy-lift launch vehicle that is under development by the United Launch Alliance (ULA) since 2014 with an initial flight expected in early 2023. It is principally designed to meet launch demands for th ...
. Retirement of the Delta IV family as a whole is anticipated in 2024.


ICPS

ULA designed and builds the Interim Cryogenic Propulsion Stage for the
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any ...
(SLS) in Decatur, Alabama and by Boeing in Huntsville, Alabama. It is a variant of a stage used for the Delta rocket family. The ICPS was the first the first component of the SLS to arrive at Kennedy Space Center in Florida. ICPS will be located high on the SLS stack, just below the Orion capsule.


Delta IV Heavy variant

The Delta IV Heavy combines a 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. As of 2007, a longer 5 meter diameter composite fairing was standard on the Delta IV Heavy, with an
aluminum Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It ha ...
isogrid fairing also available. The aluminum trisector (three-part) fairing was built by
Boeing The Boeing Company () is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, telecommunications equipment, and missiles worldwide. The company also provides leasing and ...
and derived from a Titan IV fairing. The trisector fairing was first used on the DSP-23 flight.


Delta Cryogenic Second Stage

The Delta Cryogenic Second Stage (DCSS) is a family of cryogenic rocket stages used on the Delta III and Delta IV rockets, and which is planned to be used on the Space Launch System Block 1. DCSS consists of a cylindrical liquid hydrogen tank structurally separated from an oblate spheroid liquid oxygen tank. The liquid hydrogen tank cylinder carries payload launch loads, while the liquid oxygen tank and engine are suspended below within the rocket's interstage. The stage is powered by a single Pratt & Whitney RL10B-2 engine, which features an extendable carbon-carbon nozzle to improve specific impulse.


In development


Vulcan Centaur

Vulcan is a heavy-lift launch vehicle that ULA is developing to meet the demands of the NSSL competition and launch program. The rocket is ULA's first launch vehicle design, which is adapting and evolving technologies that were developed for the Atlas V and Delta IV rockets. Vulcan is intended to undergo the human-rating certification process to allow the launch of crew in a vehicle such as the Boeing Starliner or a crewed version of the Sierra Nevada Dream Chaser. Vulcan will have a maximum liftoff thrust of and carry to
low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never m ...
, to a geo-transfer orbit, and to geostationary orbit with a heavier payload than any currently available single-core rocket. The first-stage propellant tanks share the diameter of the Delta IV Common Booster Core but will contain liquid methane and liquid oxygen propellants rather than the Delta IV's liquid hydrogen and liquid oxygen. Blue Origin's
BE-4 The Blue Engine 4 or BE-4 is an oxygen-rich liquefied-methane-fueled staged-combustion rocket engine under development by Blue Origin. The BE-4 is being developed with private and public funding. The engine has been designed to produce of thr ...
engine was selected to power Vulcan's first stage in September 2018 after a competition with the Aerojet Rocketdyne's AR1. ULA may use the Sensible Modular Autonomous Return Technology (SMART) which seeks to capture and re-use the BE-4 engines. ULA is working on the 'Sensible Modular Autonomous Return Technology' (SMART) reuse concept. The booster engines, avionics, and thrust structure would be detached as a module from the propellant tanks after booster engine cutoff, with the module descending through the atmosphere under an inflatable heat shield. After parachute deployment, the module would be captured by a helicopter in mid-air. ULA estimated that this would reduce the cost of the first stage propulsion by 90%, and 65% of the total first stage cost. The BE-4 burns liquified natural gas. Vulcan's upper stage will be the Centaur V, an upgraded variant of the Common Centaur/Centaur III that is currently used on the Atlas V. A lengthened version of the Centaur V will be used on the Vulcan Centaur Heavy. ULA planned to eventually upgrade the Centaur V with Integrated Vehicle Fluids technology to become the Advanced Cryogenic Evolved Stage (ACES). Those plans were dropped in 2020 with efforts focusing on improving the capabilities of the existing Centaur V upper stage. ULA had plans for tanker called XEUS, developed in partnership with Masten Space Systems, that would have been able to land on the moon to be stocked with fuel and then fly to a gravitationally stable libration point in the Earth-Moon system known as L1. XEUS planned to utilize the now abandoned ACES upper stage but this concept has been paused until there a clear commercial need. During the first several years of its development, the ULA board of directors made quarterly funding commitments to Vulcan Centaur development. , the U.S. government had committed approximately US$1.2 billion in a
public–private partnership A public–private partnership (PPP, 3P, or P3) is a long-term arrangement between a government and private sector institutions.Hodge, G. A and Greve, C. (2007), Public–Private Partnerships: An International Performance Review, Public Adminis ...
to Vulcan Centaur development, with future funding being dependent on ULA securing an NSSL contract. By March 2016, the U.S. Air Force had committed up to US$202 million of funding for Vulcan development. At that time, ULA had not yet estimated the total cost of Vulcan development, but CEO Tory Bruno noted that "new rockets typically cost US$2 billion, including US$1 billion for the main engine". In April 2016, ULA Board of Directors member and President of Boeing's Network and Space Systems (N&SS) division Craig Cooning expressed confidence in the possibility of further USAF funding of Vulcan development. In March 2018, ULA CEO Tory Bruno said that Vulcan-Centaur had been "75% privately funded" up to that time. In October 2018 and following a request for proposals and technical evaluation, ULA was awarded US$967 million to develop a prototype Vulcan launch system as a part of the National Security Space Launch program. Two other providers,
Blue Origin Blue Origin, LLC is an American private spaceflight, privately funded aerospace manufacturer and sub-orbital spaceflight services company headquartered in Kent, Washington. Founded in 2000 by Jeff Bezos, the founder and executive chairman of Am ...
and Northrop Grumman Innovation Systems, were awarded US$500 million and US$792 million in development funding, with detailed proposals and a competitive selection process to follow in 2019. The USAF's goal with the next generation of Launch Service Agreements is to get out of the business of "buying rockets" and move to acquire launch services from launch service providers, but U.S. government funding of launch vehicle development continues. The Vulcan rocket, directly and indirectly, provides about 22,000 jobs spread over 46 states. In August 2020, the U.S. Space Force awarded ULA a firm, fixed-price indefinite-delivery contract to launch 60% of National Security Space Launch (NSSL) Phase 2 missions over a 5-year procurement with the next-generation Vulcan Centaur rocket, the other 40% were won by SpaceX. In September 2020, ULA announced that ULA is carefully studying a "Vulcan Heavy" variant with three booster cores. Speculation about a new variant had been rampant for months after an image of a model of that version popped on social media. Tory Bruno later tweeted a clearer image of the model and said it was the subject of ongoing study. ULA has been using the Atlas V to test systems for the Vulcan Centaur. In early 2021, NASA added the Vulcan Centaur to the Launch Services II contract (NLS II). This makes the Vulcan Centaur part of the Launch Services Program and subjects it the "on-ramp" provisions in NLS II. The on-ramp provisions allow existing launch providers to introduce new vehicles that NASA has not yet requested.


Retired


Delta II

Delta II was an expendable launch system that was originally designed and built by
McDonnell Douglas McDonnell Douglas was a major American aerospace manufacturing corporation and defense contractor, formed by the merger of McDonnell Aircraft and the Douglas Aircraft Company in 1967. Between then and its own merger with Boeing in 1997, it ...
, and was later built by Boeing prior to the formation of ULA. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000 and the two later Delta 7000 variants ("Light" and "Heavy"). The rocket flew its final mission ICESat-2 on 15 September 2018. A nearly-complete Delta II, made from flight-qualified spare parts, is displayed in its 7320-10 configuration in the rocket garden at
Kennedy Space Center Visitors Complex The Kennedy Space Center Visitor Complex is the visitor center at NASA's Kennedy Space Center on Merritt Island, Florida. It features exhibits and displays, historic spacecraft and memorabilia, shows, two IMAX theaters, and a range of bus ...
.


Launch history


2006–2009

The first launch conducted by ULA was a Delta II from Vandenberg Air Force Base on 14 December 2006, carrying the satellite USA-193 for the National Reconnaissance Office. The satellite failed shortly after launch and was intentionally destroyed on 21 February 2008, by an SM-3 missile that was fired from the . ULA's first
Atlas V Atlas V is an expendable launch system and the fifth major version in the Atlas launch vehicle family. It was originally designed by Lockheed Martin, now being operated by United Launch Alliance (ULA), a joint venture between Lockheed Mart ...
launch was in March 2007; it was an Atlas V variant 401 launching six military research satellites for Space Test Program (STP) 1. This mission also performed three burns of the Centaur upper stage; it was the first three-burn mission for Atlas V. ULA's first commercial mission
COSMO-SkyMed COSMO-SkyMed (COnstellation of small Satellites for the Mediterranean basin Observation) is an Earth-observation satellite space-based radar system funded by the Italian Ministry of Research and Ministry of Defence and conducted by the Ita ...
was launched on behalf of Italy's Ministry of Defense three months later using a Delta II rocket. On June 15, 2007, the engine in the Centaur upper stage of a ULA-launched Atlas V shut down early, leaving its payload – a pair of NROL-30 ocean surveillance satellites – in a lower than intended orbit. The NRO declared the launch a success. 2007 also saw ULA's first two interplanetary spacecraft launches using the Delta II; the '' Phoenix'' probe was launched to
Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...
in August 2007 and the ''
Dawn Dawn is the time that marks the beginning of twilight before sunrise. It is recognized by the appearance of indirect sunlight being scattered in Earth's atmosphere, when the centre of the Sun's disc has reached 18° below the observer's ...
'' satellite to was launched to the asteroids Vesta and Ceres in September 2007. Using a Delta II, the '' WorldView-1'' satellite was also launched into a
low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never m ...
on behalf of DigitalGlobe. The company's first launch to geostationary transfer orbit using an Atlas V 421 variant carrying the USA-195 (or WGS-1) communications satellite also occurred that year. ULA's tenth mission was launching satellite GPS IIR-17 into
medium Earth orbit A medium Earth orbit (MEO) is an Earth-centered orbit with an altitude above a low Earth orbit (LEO) and below a high Earth orbit (HEO) – between above sea level.
on a Delta II. The company completed its first Delta IV launch using the Delta IV Heavy rocket to place a payload into geosynchronous orbit in November 2007, which was followed by three more launches in December 2007. 2008 saw seven launches, including Atlas V's from Vandenberg's Space Launch Complex 3E and five others using the Delta II. The Atlas launch carried NROL-28 in March 2008 and in September 2008 the '' GeoEye-1'' satellite was orbited by a Delta II rocket. ULA completed eight Delta II, five Atlas V, and three Delta IV launches in 2009. The Delta II launches carried three Space Tracking and Surveillance System satellites over two launches, two
Global Positioning System The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite ...
satellites, and the
NOAA-19 NOAA-19, known as NOAA-N' (NOAA-N Prime) before launch, is the last of the American National Oceanic and Atmospheric Administration (NOAA) series of weather satellites. NOAA-19 was launched on 6 February 2009. NOAA-19 is in an afternoon Sun-sy ...
and '' WorldView-2'' satellites, as well as the ''
Kepler Johannes Kepler (; ; 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws o ...
'' and the
Wide-field Infrared Survey Explorer Wide-field Infrared Survey Explorer (WISE, observatory code C51, Explorer 92 and SMEX-6) is a NASA infrared astronomy space telescope in the Explorers Program. It was launched in December 2009, and placed in hibernation mode in February 2 ...
space telescopes. The Atlas launches carried the
Lunar Reconnaissance Orbiter The Lunar Reconnaissance Orbiter (LRO) is a NASA robotic spacecraft currently orbiting the Moon in an eccentric polar mapping orbit. Data collected by LRO have been described as essential for planning NASA's future human and robotic missions t ...
and LCROSS mission as part of the Lunar Precursor Robotic Program, which was later intentionally crashed into the
Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...
and found the existence of water; other 2009 Atlas V launches in included
Intelsat 14 Intelsat 14 is a communications satellite owned by Intelsat located at 45° West longitude, serving the Americas, Europe, and African markets. Intelsat 14 replaced Intelsat 1R which was at the end of its design life. It was built by Spa ...
, WGS-2, PAN, and a
weather satellite A weather satellite or meteorological satellite is a type of Earth observation satellite that is primarily used to monitor the weather and climate of the Earth. Satellites can be polar orbiting (covering the entire Earth asynchronously), or ...
as part of the Defense Meteorological Satellite Program (DMSP). The Delta IV rockets carried the
NROL-26 USA 202, previously NRO Launch 26 or NROL-26, is a classified spacecraft which is operated by the United States National Reconnaissance Office. It is an Advanced Orion ELINT satellite. According to ''Aviation Week,'' it "fundamentally involves Am ...
, GOES 14, and WGS-3 satellites.


2010–2014

In 2010, Atlas V launches deployed the Solar Dynamics Observatory, the first Boeing X-37B, the first
Advanced Extremely High Frequency Advanced Extremely High Frequency (AEHF) is a constellation of communications satellites operated by the United States Space Force. They are used to relay secure communications for the United States Armed Forces, the British Armed Forces, the C ...
(AEHF) satellite, and the NROL-41. The Delta II system placed the last
COSMO-SkyMed COSMO-SkyMed (COnstellation of small Satellites for the Mediterranean basin Observation) is an Earth-observation satellite space-based radar system funded by the Italian Ministry of Research and Ministry of Defence and conducted by the Ita ...
and Delta IV launches deployed the
GOES 15 GOES-15, previously known as GOES-P, is an American weather satellite, which forms part of the Geostationary Operational Environmental Satellite (GOES) system operated by the U.S. National Oceanic and Atmospheric Administration. The spacecraft was ...
, GPS Block IIF, and USA-223 satellites. ULA completed eleven launches in 2011, including five by Atlas, three by Delta II, and three by Delta IV. The Atlas system orbited another Boeing X-37, two NROL-34 signals intelligence satellites, a Space-Based Infrared System (SBIS) satellite, the '' Juno'' spacecraft and ''
Curiosity Curiosity (from Latin '' cūriōsitās'', from ''cūriōsus'' "careful, diligent, curious", akin to ''cura'' "care") is a quality related to inquisitive thinking such as exploration, investigation, and learning, evident by observation in human ...
'' rover. The Delta II launches placed the
SAC-D SAC-D ( es, Satélite de Aplicaciones Científicas-D, meaning ''Satellite for Scientific Applications-D''), also known as Aquarius after its primary instrument, is an Argentine Earth science satellite built by INVAP and operated by CONAE. SAC-D ...
and Suomi NPP satellites into orbit, as well as two spacecraft associated with NASA's GRAIL lunar mission. Delta IV launches carried the NROL-49, NROL-27, and another GPS satellite. ULA's 2012 launches included six Atlas Vs and four Delta IVs. The Atlas system carried Mobile User Objective System (MUOS) and AEHF satellites, another Boeing X-37, the Intruder and Quasar satellites, and the Van Allen Probes. Delta IVs deployed GPS and WGS satellites
USA-233 USA-233, or Wideband Global SATCOM 4 (WGS-4) is a United States military communications satellite operated by the United States Air Force as part of the Wideband Global SATCOM program, launched in 2012. The fourth Wideband Global SATCOM sate ...
, as well as NROL-25 and NROL-15 on behalf of the National Reconnaissance Office. In 2013, the Atlas flew eight times. The system launched the TDRS-11, Landsat 8, AEHF-3, and NROL-39 satellites, as well as SBIS, GPS, and MUOS satellites, as well as NASA's MAVEN space probe to Mars. Delta IV launches orbited the fifth and sixth Wideband Global SATCOM satellites WGS-5 and
WGS-6 USA-244, or Wideband Global SATCOM 6 (WGS-6) is a United States military communications satellite operated by the United States Air Force as part of the Wideband Global SATCOM programme. Launched in 2013, it was the sixth WGS satellite to rea ...
, as well as NROL-65. In 2014, ULA's Atlas V orbited the TDRS-12 communications satellite in January, the '' WorldView-3'' commercial satellite in August 2014, and the CLIO communications satellite during September and October 2014. Atlas rockets also carried the satellites DMSP-5D-3/F19, NROL-67, NROL-33, and NROL-35. Delta IV rockets orbited GPS satellites and two
Geosynchronous Space Situational Awareness Program The Space Based Space Surveillance (SBSS) system is a planned United States Space Force constellation of satellites and supporting ground infrastructure that will improve the ability of the United States Department of Defense (DoD) to detect and ...
satellites, and in July 2014, NASA's Orbiting Carbon Observatory 2 was carried by a Delta II. Orion's first test flight was launched by a Delta IV Heavy rocket in December 2014, as part of Exploration Flight Test-1.


2015–2019

A Delta II rocket orbited a
Soil Moisture Active Passive Soil Moisture Active Passive (SMAP) is a NASA environmental monitoring satellite that measures soil moisture across the planet. It is designed to collect a global 'snapshot' of soil moister every 2 to 3 days. With this frequency, changes from sp ...
satellite in January 2015. In March 2015, an Atlas V rocket carried NASA's Magnetospheric Multiscale Mission spacecraft, and a Delta IV rocket orbited the GPS IIF-9 satellite on behalf of the U.S. Air Force. The U.S. Air Force's X-37B spaceplane was carried by an Atlas V rocket in May 2015, and a Delta IV orbited the WGS-7 satellite in July 2015. The fourth MUOS satellite was orbited by an Atlas V in September 2015. ULA's 100th consecutive successful liftoff was completed on 2 October 2015, when an Atlas V rocket orbited a Mexican Satellite System communications satellite on behalf of the Secretariat of Communications and Transportation. The classified NROL-55 satellite was launched by an Atlas V rocket several days later. Atlas V rockets launched GPS Block IIF satellites and the '' Cygnus'' cargo spacecraft in November 2015 and December 2015, respectively. In 2016, Delta IV rockets carried the NROL-45 satellite and Air Force Space Command 6 mission in February 2016 and August 2016, respectively. During a launch of the Atlas V rocket on 22 March 2016, a minor first-stage anomaly led to shutdown of the first-stage engine approximately five seconds before anticipated. The Centaur upper stage was able to compensate by firing for approximately one minute longer than planned using its reserved fuel margin. Atlas V rockets carried MUOS-5 in June 2016, NROL-61 satellites in July 2016, and the OSIRIS-REx spacecraft in September 2016. ULA launched multiple satellites in late 2016. The weather satellite Geostationary Operational Environmental Satellite (GOES-R) was carried in November 2016, as was the ''
WorldView-4 ''WorldView-4'', previously known as ''GeoEye-2'', was a third generation commercial Earth observation satellite launched on 11 November 2016, at 18:30:33 UTC. The spacecraft was operated by DigitalGlobe. With a maximum resolution of , ''Worl ...
'' imaging satellite. In December 2016, the Wideband Global SATCOM's eighth satellite WGS-8 was launched on a Delta IV Medium rocket, and an Atlas V carried the EchoStar XIX communications satellite on behalf of Hughes Communications. In March 2017, WGS-9 was orbited by a Delta IV. Atlas V rockets carried NRO satellites, TDRS-M, and a ''Cygnus'' cargo capsule in 2017. The weather satellite NOAA-20 (JPSS-1) was launched by a Delta II rocket in November 2017. An Atlas V carried the SBIRS-GEO 4 military satellite in January 2018. The Atlas V's launch of
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
's InSight to
Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...
in 2018 was the first interplanetary probe to depart from the U.S. West Coast. In August 2018, a Delta IV Heavy launched Parker Solar Probe, NASA's solar space probe that will visit and study the sun's outer corona in August 2018. It was also the Delta IV Heavy with a Star-48BV kick stage, and the highest-ever spacecraft velocity. The company launched the final Delta II rocket, carrying ICESat-2 from Vandenberg Air Force Base SLC-2 on 15 September 2018. This marks the last launch of a Delta family rocket based on the original
Thor Thor (; from non, Þórr ) is a prominent god in Germanic paganism. In Norse mythology, he is a hammer-wielding god associated with lightning, thunder, storms, sacred groves and trees, strength, the protection of humankind, hallowing, ...
IRBM. On 22 August 2019, ULA launched its last Delta IV Medium rocket for the GPS III Magellan project. An Atlas V carried Boeing's Starliner Orbital Flight Test (OFT) mission for NASA in December 2019.


2020

In 2020, an Atlas V carried the
Solar Orbiter The Solar Orbiter (SolO) is a Sun-observing satellite developed by the European Space Agency (ESA). SolO, designed to obtain detailed measurements of the inner heliosphere and the nascent solar wind, will also perform close observations of ...
spacecraft, an international collaboration between the
European Space Agency , owners = , headquarters = Paris, Île-de-France, France , coordinates = , spaceport = Guiana Space Centre , seal = File:ESA emblem seal.png , seal_size = 130px , image = Views in the Main Control Room (120 ...
(ESA) and NASA to provide a new global view of the Sun. In March 2020, an Atlas V also launched Advanced Extremely High Frequency 6 (AEHF-6), the first U.S. Space Force National Security Mission. In May 2020, ULA launched an Atlas V rocket carrying the USSF-7 mission with the X-37B
spaceplane A spaceplane is a vehicle that can fly and glide like an aircraft in Earth's atmosphere and maneuver like a spacecraft in outer space. To do so, spaceplanes must incorporate features of both aircraft and spacecraft. Orbital spaceplane ...
for the U.S Space Force and the mission honors victims of the
COVID-19 pandemic The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identi ...
as well as
first responder A first responder is a person with specialized training who is among the first to arrive and provide assistance or incident resolution at the scene of an emergency, such as an accident, disaster, medical emergency, structure fire, crime, or ...
s,
health professional A health professional, healthcare professional, or healthcare worker (sometimes abbreviated HCW) is a provider of health care treatment and advice based on formal training and experience. The field includes those who work as a nurse, physician (suc ...
s, military personnel, and other essentialworkers. On 30 July 2020, Atlas V in the 541 configuration successfully launched Perseverance and Ingenuity as part of
Mars 2020 Mars 2020 is a Mars rover mission forming part of NASA's Mars Exploration Program that includes the rover '' Perseverance'', the small robotic, coaxial helicopter '' Ingenuity'', and associated delivery vehicles. Mars 2020 was launched from ...
towards Mars. In November 2020, ULA launched NROL-101, a top secret spy satellite for the National Reconnaissance Office, on board their Atlas V in a 531 configuration. This launch was notable because it was the first flight of the GEM-63 solid rocket boosters, a version of which will be used on their
Vulcan Centaur Vulcan Centaur is a two-stage-to-orbit, heavy-lift launch vehicle that is under development by the United Launch Alliance (ULA) since 2014 with an initial flight expected in early 2023. It is principally designed to meet launch demands for th ...
launch vehicle.


2021

On 18 May 2021, the SBIRS GEO 5 missile-warning satellite was launched on an Atlas V 421 rocket. The Lucy spaceflight began on 16 October 2021 upon launch aboard a United Launch Alliance Atlas V 401 rocket into a stable parking orbit. During the next hour, the second stage reignited to place Lucy on an interplanetary trajectory in a heliocentric orbit on a twelve-year mission to two groups of Sun-Jupiter Lagrange point Trojan asteroids as well as a close flyby of a mainbelt asteroid during one of three planned passes through the asteroid belt. If the spacecraft remains operational during the 12-year planned duration, it is likely the controlled flight will be continued and directed at additional asteroid targets.


Infrastructure


Launch facilities

ULA operates orbital launch sites at
Cape Canaveral Space Force Station Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida. Headquartered at the nearby Patrick Space Force Base, the stati ...
in Cape Canaveral, Florida, and Vandenberg Space Force Base near Lompoc, California. In Florida, ULA has used
Space Launch Complex 41 Space Launch Complex 41 (SLC-41), previously Launch Complex 41 (LC-41), is an active launch site at Cape Canaveral Space Force Station. As of 2020, the site is used by United Launch Alliance (ULA) for Atlas V launches. Previously, it had been use ...
for Atlas V launches since its maiden flight in August 2002, and Launch Complex 37 for
Delta IV 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 and Security division for the Evolved Expendable Launch Vehicle (EELV) program, th ...
launches since the rocket's maiden flight in November 2002. Aging infrastructure and low flight cadence from LC-37 contributed to a number of delays in the launch of NROL-44. ULA is looking to mitigate this with improvement to their operations readiness process. The company has two launch pads at Vandenberg as of November 2020. These include Space Launch Complex 3 for Atlas launches and Space Launch Complex 6 for Delta IV and Delta IV Heavy launches. Space Launch Complex 2 is no longer in active use by ULA since the retirement of the Delta II in September 2018. Launches from Cape Canaveral typically head east to give satellites extra momentum from the rotation of the Earth as they head to other planets or into an equatorial orbit. Vandenberg Space Force Base is the primary U.S. launch site from which satellites are sent into polar orbits. Commercial and military spacecraft like imaging and weather satellites need to be launched southward on a path to reach a polar orbit to cover the entire globe. ULA's Atlas V rocket launched NASA's InSight mission to Mars from the West Coast in 2018, the first interplanetary mission to do so. In 2015, as part of the company's transition from the Atlas V and Delta IV launch vehicles to the
Vulcan Centaur Vulcan Centaur is a two-stage-to-orbit, heavy-lift launch vehicle that is under development by the United Launch Alliance (ULA) since 2014 with an initial flight expected in early 2023. It is principally designed to meet launch demands for th ...
, ULA announced plans to reduce the number of launch pads in use from five to two by the early 2020s. ULA works closely with the
45th Weather Squadron 45th Weather Squadron (45 WS), 45th Operations Group (45 OG), Space Launch Delta 45, at Patrick Space Force Base, Florida performs weather assessments for air and space operations; specifically, weather observations, forecasts, advisories, and war ...
on its launches from Florida.


Headquarters and manufacturing

ULA's headquarters in Centennial, Colorado, are responsible for program management, rocket engineering, testing, and launch support functions. ULA's largest factory is and located in Decatur, Alabama. A factory in Harlingen, Texas, fabricates and assembles components for the Atlas V rocket. In 2015, the company announced the opening of an engineering and propulsion test center in
Pueblo, Colorado Pueblo () is a home rule municipality that is the county seat and the most populous municipality of Pueblo County, Colorado, United States. The city population was 111,876 at the 2020 United States Census, making Pueblo the ninth most popu ...
.


Spaceflight Processing Operations Center

The Spaceflight Processing Operations Center (SPOC), located near SLC-40 and
SLC-41 Space Launch Complex 41 (SLC-41), previously Launch Complex 41 (LC-41), is an active launch site at Cape Canaveral Space Force Station. As of 2020, the site is used by United Launch Alliance (ULA) for Atlas V launches. Previously, it had been us ...
, is used to construct the mobile launcher platform for the Vulcan Centaur launch vehicle. It also serve as a storage room for the Atlas Mobile launcher platform (MLP). On 6 August 2019, the first two parts of Vulcan's MLP were transported to the SPOC. SPOC was formerly known as the Solid Motor Assembly and Readiness Facility (SMARF) during its support of the Titan IVB launch vehicle; it was renamed during Vulcan Centaur's topping ceremony in October 2019.


See also

* Aerojet Rocketdyne ( RS-68 and
RL10 The RL10 is a liquid-fuel cryogenic rocket engine built in the United States by Aerojet Rocketdyne that burns cryogenic liquid hydrogen and liquid oxygen propellants. Modern versions produce up to of thrust per engine in vacuum. Three RL ...
) *
Blue Origin Blue Origin, LLC is an American private spaceflight, privately funded aerospace manufacturer and sub-orbital spaceflight services company headquartered in Kent, Washington. Founded in 2000 by Jeff Bezos, the founder and executive chairman of Am ...
(
BE-4 The Blue Engine 4 or BE-4 is an oxygen-rich liquefied-methane-fueled staged-combustion rocket engine under development by Blue Origin. The BE-4 is being developed with private and public funding. The engine has been designed to produce of thr ...
) * National Security Space Launch * Northrop Grumman Innovation Systems ( Graphite-Epoxy Motor) *
RUAG Space Beyond Gravity is the space-oriented segment of the Swiss technology group RUAG. At a total of fourteen sites in Switzerland ( Zurich, Emmen and Nyon), Sweden (Gothenburg, Linköping), Finland (Tampere), Germany ( Coswig), USA (Denver, Titusv ...
( payload fairings, composite structures) ;Past launch vehicles *
Delta II Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 va ...
*
Delta IV Medium 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 and Security division for the Evolved Expendable Launch Vehicle (EELV) program, the ...
;Other launch vehicle providers * SpaceX * Arianespace *
Mitsubishi Heavy Industries is a Japanese multinational engineering, electrical equipment and electronics corporation headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group and its automobile division is the predecessor of Mitsubishi ...
* Roscosmos


References


External links

* * * * * * * {{Atlas rockets 2006 establishments in Colorado Boeing Commercial launch service providers American companies established in 2006 Companies based in Centennial, Colorado Joint ventures Lockheed Martin Space Act Agreement companies Space organizations Technology companies established in 2006