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United Launch Alliance

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United Launch Alliance, LLC
Company typeJoint venture
IndustryAerospace, launch service provider
FoundedDecember 2006; 19 years ago (2006-12)
FounderLockheed Martin Space, Boeing Defense, Space & Security
Headquarters
Littleton, Colorado
,
United States
Area served
Worldwide
Key people
Tory Bruno (CEO)
ProductsLaunch vehicles (Atlas V, Vulcan Centaur)
Number of employees
2500 (2018)
ParentLockheed Martin and Boeing (equal partnership)

United Launch Alliance, LLC (ULA) is a U.S.-based launch service provider formed in December 2006 as an equal partnership between Lockheed Martin Space and Boeing Defense, Space & Security. ULA is responsible for designing, assembling, marketing, and launching rockets, while subcontracting the manufacturing of rocket engines and solid rocket boosters.

At its founding, ULA took over the Atlas series from Lockheed Martin and the Delta series from Boeing. By 2024, the Delta rockets had been retired and the Atlas V was in the process of being phased out. To succeed both lines, ULA initiated development of the Vulcan Centaur in 2014, which completed its inaugural flight in January 2024.

ULA’s main customers include the DoD and NASA, in addition to commercial clients.

Establishment

On May 2, 2005, Lockheed Martin and Boeing announced plans to merge their space launch operations under a new entity, ULA. Both firms had been rivals competing for DoD contracts with their respective Atlas and Delta rockets within the framework of the Evolved Expendable Launch Vehicle (EELV) initiative. The Department of Defense sought to encourage a competitive commercial launch sector; however, competition proved financially disadvantageous for both companies. Boeing also faced legal disputes concerning proprietary Lockheed documentation dating back to 2003. To settle these legal conflicts and reduce competition-related inefficiencies, they created ULA—a move projected by the DoD to generate annual savings between $100 million and $150 million.

SpaceX opposed the merger on antitrust grounds, claiming it would establish a monopoly in launch services. Nevertheless, the Federal Trade Commission approved ULA’s formation, prioritizing assured national security access to space over market competition concerns.

Michael Gass leadership (2005–2014)

Michael Gass served as ULA’s inaugural CEO and oversaw integration efforts that centralized manufacturing in Decatur, Alabama and engineering activities in Littleton, Colorado. The parent companies continued to handle marketing and sales functions for their respective Delta and Atlas vehicles.

Facing financial pressures, ULA reduced its workforce by 350 out of 4,200 employees in early 2009 and closed two of seven launch pads. Around this time, ULA briefly joined the Commercial Spaceflight Federation before withdrawing.

Increasing launch expenses and emerging affordable competitors drew attention to ULA’s business approach—particularly its reliance on government funding to maintain multiple launch complexes and rocket variants. This concern deepened following a 2012 cost overrun within the EELV program.

In December 2013, ULA secured a DoD contract for 36 rocket cores supporting up to 28 launches. SpaceX protested this award, disputing ULA’s estimated per-launch cost of $460 million and proposing a significantly lower price of $90 million. Gass responded by stating that ULA’s average launch cost was approximately $225 million with potential reductions to $100 million on future missions.

Tory Bruno leadership (2014–present)

Tory Bruno assumed the role of CEO in August 2014.[1] His tenure began amid demands to develop a next-generation launcher capable of reducing expenses to better compete with SpaceX’s partially reusable rockets. High launch prices limited ULA’s appeal among commercial and civil satellite operators, increasing dependence on contracts from the U.S. military and intelligence agencies—which themselves faced competition from SpaceX.[2][3][4] Furthermore, geopolitical developments following Russia's annexation of Crimea led Congress in 2016 to prohibit military purchases of Russian RD-180 engines beyond 2022.[3][5]

To achieve cost reductions, ULA underwent restructuring that lowered its workforce from 3,600 employees in 2014 to approximately 2,500 by 2018,[4][6] while consolidating launch operations from five pads down to two.[7] Collaboration with Blue Origin resulted in development of the BE-4 engine—integral to the Vulcan Centaur rocket—intended to decrease expenses and enhance competitiveness by merging technologies from Delta and Atlas with new innovations.[8][4]

Despite these initiatives, ULA’s launch prices remained higher than those offered by SpaceX.[4] A joint NASA lunar lander proposal with Dynetics was rejected in 2021 due to insufficient readiness.[9] The Delta rocket family was officially retired in 2024 because of high costs and slow production rates, ceding commercial market share to Falcon Heavy.[10][11] Approximately 100 RD-180 engines were stockpiled for remaining Atlas V missions; however, no further orders were planned.

In 2022, Amazon awarded ULA its largest commercial contract ever for Project Kuiper satellite internet launches: nine flights using Atlas V and thirty-eight on Vulcan Centaur out of a total of eighty-three planned launches.[12]

By late 2023, Boeing and Lockheed Martin were exploring options to divest their stakes in ULA. Potential acquirers included Blue Origin,[13] Cerberus Capital Management, and Textron.[14] By mid-2024 Sierra Space was reported to be engaged in advanced acquisition discussions,[15][16] although as of 2025 no sale had been finalized.

In April 2025, the Department of Defense awarded ULA a $5.3 billion contract encompassing nineteen national security launches within a broader procurement totaling about eighty missions scheduled between 2025 and 2034. SpaceX secured the majority share with twenty-eight launches; Blue Origin received seven.[17]

Military leadership expressed dissatisfaction regarding delays in the Vulcan program. In May 2025 testimony before the House Armed Services Committee, Major General Stephen G. Purdy characterized Vulcan's performance as "unsatisfactory," highlighting postponed national security missions that hindered Space Force objectives. He stressed that ULA must "rebuild trust" through enhanced accountability.[18]

Products

When ULA was established in 2006, it took over the Atlas from Lockheed Martin and the Delta from Boeing. By 2024, the Delta series had been retired, and the Atlas V was in the process of being phased out. To replace both rocket families, ULA initiated development of the Vulcan Centaur in 2014.

Vulcan Centaur

The Vulcan Centaur is a heavy-lift launch vehicle that integrates technologies from both Atlas and Delta while introducing new innovations. It has been engineered to fulfill the requirements of the National Security Space Launch (NSSL) program and is designed to achieve human-rating certification to support crewed spacecraft such as the Boeing Starliner and Dream Chaser.

Created in response to competition from SpaceX and to eliminate reliance on the Russian-built RD-180 engine due to sanctions, Vulcan delivers a maximum liftoff thrust of . Its payload capacity includes transporting up to to low Earth orbit, to geostationary transfer orbit, and directly to geostationary orbit.

The first stage shares dimensions with the Delta family’s Common Booster Core and is powered by two BE-4 engines developed by Blue Origin, which utilize liquid oxygen and methane as propellants. The upper stage employs an advanced version of the Centaur V, equipped with two RL10 engines supplied by Aerojet Rocketdyne, running on liquid hydrogen and oxygen. Additionally, lift capability can be enhanced with up to six solid rocket boosters (GEM 63XL) manufactured by Northrop Grumman.

ULA is pursuing partial reusability through its Sensible Modular Autonomous Return Technology (SMART) system, which enables recovery of the BE-4 engines and avionics as a single unit using an inflatable heat shield and parachutes for ocean splashdown. This approach has the potential to reduce first-stage manufacturing expenses by approximately 65%.

The Vulcan program operates under a public–private partnership model, with about US$1.2 billion financed by the U.S. government while Boeing and Lockheed Martin are expected to provide roughly 75% of the remaining funding.

In October 2018, NSSL procured a prototype Vulcan mission planned for 2019. Later, in August 2020, ULA secured a contract to conduct 60% of NSSL launches over a five-year span beginning in 2022.

Following some delays, Vulcan’s maiden flight took place on January 8, 2024, successfully deploying NASA’s Peregrine lunar lander for lunar science experiments.

A subsequent test flight known as Cert-2 occurred on October 4, 2024. The U.S. Space Force will analyze flight data to certify Vulcan for national security payload launches.

Atlas V

Originally developed by Lockheed Martin and transferred to ULA in 2006, the Atlas V served as ULA’s primary launch vehicle for more than two decades. It is now approaching retirement; all future flights have been scheduled with no new orders accepted. As of July 2024, Atlas V has completed 101 missions with an additional 15 launches planned. Although eleven configurations were once offered, only the "551" and "N22" variants remain active.

Emerging from the National Security Space Launch (NSSL) initiative, Atlas V’s inaugural successful launch occurred in 2002. This expendable two-stage rocket features a first stage Common Core Booster driven by a single Russian-made RD-180 engine burning kerosene and liquid oxygen. The upper stage is a Centaur III, powered by an RL10 engine using liquid hydrogen and oxygen as propellants. The first stage can be supplemented by up to five solid rocket boosters (AJ-60A or GEM 63) for additional thrust.

The Atlas V was adapted for Boeing’s Starliner crew capsule missions with enhancements such as upgraded avionics, improved data links, and manual abort capabilities. Starliner flights employ a specialized Atlas V configuration that includes two solid rocket boosters, omits the payload fairing, and uses a dual-engine Centaur second stage designed to provide a smoother ascent profile that reduces G-forces on astronauts. This configuration stands at 172 feet tall, with ULA contracted for nine Starliner launches using this variant.

Interim Cryogenic Propulsion Stage

The Interim Cryogenic Propulsion Stage (ICPS) functions as the second-stage booster for NASA's Space Launch System (SLS) Block 1 variant. It is adapted from the Delta Cryogenic Second Stage utilized by ULA's Delta launch vehicles. Positioned between the SLS core stage and the Orion spacecraft, the ICPS incorporates a cylindrical liquid hydrogen tank engineered to endure launch stresses, with a liquid oxygen tank and a single RL10B-2 engine suspended beneath, all enclosed by the interstage structure. Only three ICPS units were produced to support the Artemis I, II, and III missions. Following these flights, Boeing’s Exploration Upper Stage will succeed the ICPS.

Delta II

The Delta II was an expendable launch vehicle initially developed by McDonnell Douglas and later manufactured by Boeing prior to ULA’s establishment. As a member of the Delta rocket series, it entered operational service in 1989. Between 2006 and its retirement, ULA conducted 30 Delta II launches employing variants such as the Delta 6000 and Delta 7000 families, known as "Light" and "Heavy." The final flight took place on September 15, 2018, carrying the ICESat-2 satellite. A nearly complete Delta II in its 7320-10 configuration is displayed at Kennedy Space Center Visitors Complex, highlighting its historical significance within ULA’s launch vehicle lineup.

Delta IV

Delta IV represents a group of five expendable launch vehicles within the Delta rocket family, introduced in the early 2000s. Initially developed by Boeing’s Defense, Space & Security division under the Evolved Expendable Launch Vehicle (EELV) program, it became part of United Launch Alliance’s portfolio in 2006. Primarily dedicated to deploying United States Air Force military payloads, Delta IV also supported various civilian government missions and a single commercial satellite launch. The family consisted of two principal versions: Medium, which included four configurations, and Heavy. Payloads previously launched by Medium variants transitioned to Atlas V or Vulcan Centaur rockets following Medium’s phase-out.

Delta IV Heavy

Delta IV Heavy was the largest model within the Delta IV series, flown once by Boeing before ULA's formation and subsequently 15 times by ULA from 2007 through 2024. Its last mission launched on April 9, 2024, from Cape Canaveral Space Force Station. This heavy-lift variant combined a 5-meter diameter Delta Cryogenic Second Stage (DCSS) and payload fairing with two additional Common Booster Cores (CBCs) acting as strap-on boosters that separated earlier than the central core. The standard composite fairing was supplemented by an aluminum isogrid trisector fairing derived from Boeing’s Titan IV design, first utilized during the DSP-23 mission. Over its operational history, Delta IV Heavy completed 16 flights and served as a critical heavy-lift vehicle within ULA’s fleet.

Launch history

All data current as of June 2025.

2006–2009

United Launch Alliance’s debut launch was conducted with a Delta II from Vandenberg Space Force Base on December 14, 2006, deploying the USA-193 satellite for the National Reconnaissance Office. This satellite malfunctioned shortly after deployment and was intentionally destroyed in February 2008 by a missile launched from a naval vessel. The inaugural Atlas V flight occurred in March 2007, placing six military research satellites into orbit for the Space Test Program; this mission featured the Centaur upper stage performing its first three-burn sequence.

Later that year, ULA completed its first commercial launch with COSMO-SkyMed for Italy’s Ministry of Defense aboard a Delta II. Despite an early shutdown of the Centaur engine during an Atlas V mission carrying NROL-30 satellites in June 2007, the deployment was successful. ULA also executed its initial interplanetary missions in August and September of that year with Phoenix bound for Mars and Dawn targeting asteroids Vesta and Ceres.

In addition to government payloads, ULA launched DigitalGlobe's WorldView-1 into low Earth orbit and USA-195 (WGS-1) to geostationary transfer orbit via Atlas V within the same period. The company’s first Delta IV Heavy flight took place in November 2007, followed by three additional launches in December.

During 2008, ULA conducted seven launches including Atlas V missions from Vandenberg Space Launch Complex 3E alongside five Delta II flights; notably, GeoEye-1 was orbited by a Delta II in September. In 2009, operations included eight Delta II launches, five Atlas V missions, and three Delta IV flights. The Delta II launches deployed satellites such as those for Space Tracking and Surveillance System, GPS constellations, NOAA-19 weather observation, WorldView-2 imaging, Kepler space telescope, and Wide-field Infrared Survey Explorer.

Atlas V missions in 2009 carried NASA’s Lunar Reconnaissance Orbiter and LCROSS under the Lunar Precursor Robotic Program; LCROSS confirmed water on the Moon upon impact. Other payloads included Intelsat 14 communications satellite, WGS-2 military communications satellite, PAN reconnaissance satellite, and Defense Meteorological Satellite Program weather satellites. The Delta IV fleet launched NROL-26 reconnaissance payloads along with GOES-14 weather satellite and WGS-3 communications spacecraft.

This era solidified ULA’s position in the aerospace sector through diverse government and commercial satellite deployments across multiple orbital regimes, reinforcing its competitive strength in launch services.

2010–2014

From 2010 through 2014, United Launch Alliance (ULA) successfully completed a series of major launches that solidified its standing within the aerospace sector. In 2010, Atlas V missions placed vital payloads into orbit, including the Solar Dynamics Observatory, the inaugural Boeing X-37B, the Advanced Extremely High Frequency (AEHF) satellite, and NROL-41. That year also marked Delta II’s final COSMO-SkyMed deployment, while Delta IV launched satellites such as GOES 15, GPS Block IIF, and USA-223.

During 2011, ULA executed eleven launches: five utilizing Atlas V, three with Delta II, and three employing Delta IV vehicles. Key payloads encompassed the Boeing X-37 spaceplane, NROL-34 signals intelligence satellites, a Space-Based Infrared System (SBIRS) satellite, NASA's Juno spacecraft, and the Curiosity rover. The Delta II rocket supported SAC-D and Suomi NPP missions alongside NASA’s GRAIL lunar probe. Delta IV launchers deployed NROL-49, NROL-27, and additional GPS satellites.

The 2012 manifest consisted of six Atlas V and four Delta IV launches. Atlas V missions delivered Mobile User Objective System (MUOS), AEHF satellites, Boeing X-37, Intruder and Quasar satellites, as well as the Van Allen Probes. Meanwhile, Delta IV was responsible for launching GPS and Wideband Global SATCOM (WGS) satellites USA-233, NROL-25, and NROL-15 on behalf of the National Reconnaissance Office.

In 2013, Atlas V conducted eight flights featuring payloads such as TDRS-11, Landsat 8, AEHF-3, NROL-39 satellites, SBIRS assets, GPS and MUOS spacecraft, plus NASA’s MAVEN mission to Mars. The Delta IV vehicle launched WGS-5 and WGS-6 communication satellites along with NROL-65.

Throughout 2014, Atlas V orbited several key satellites including TDRS-12 in January; the commercial WorldView-3 imaging satellite in August; and the CLIO communications satellite later that summer. Additional Atlas missions deployed DMSP-5D-3/F19 and multiple National Reconnaissance Office payloads (NROL-33, NROL-35, NROL-67). Delta IV supported GPS satellite deployments along with Geosynchronous Space Situational Awareness Program operations. July saw a Delta II launch NASA's Orbiting Carbon Observatory 2. The year culminated with the first test flight of the Orion spacecraft aboard a Delta IV Heavy rocket.

This timeframe represented pivotal growth for ULA by consistently delivering both government and commercial payloads via its Atlas V, Delta II, and Delta IV platforms—further enhancing its competitive position in global aerospace markets.

2015–2019

In January 2015, a Delta II vehicle launched the Soil Moisture Active Passive satellite. Following this were launches such as Atlas V carrying NASA’s Magnetospheric Multiscale Mission in March and a Delta IV deploying the U.S. Air Force’s GPS IIF-9 satellite. May witnessed an Atlas V mission placing the Air Force’s X-37B spaceplane into orbit; July featured a Delta IV launch of the WGS-7 satellite. Later in 2015, Atlas V orbited the fourth MUOS satellite alongside a Mexican Satellite System communications payload—marking ULA’s milestone of 100 consecutive successful liftoffs. Additional launches included classified NROL-55 missions, GPS Block IIF satellites, and Cygnus cargo deliveries.

Throughout 2016, Delta IV rockets launched missions such as NROL-45 and Air Force Space Command 6. Although a minor anomaly occurred during the first stage of the March Cygnus CRS OA-6 Atlas V flight, mission success was achieved through upper stage correction. That year also saw Atlas V orbit MUOS-5, NROL-61 reconnaissance payloads, and NASA’s OSIRIS-REx asteroid sample return spacecraft. Late 2016 missions included GOES-R weather satellite deployment; WorldView-4 imaging satellite launch; WGS-8 via a Delta IV Medium; and EchoStar XIX for Hughes Communications.

Early 2017 featured a Delta IV launch of WGS-9; Atlas V missions placed National Reconnaissance Office satellites into orbit along with TDRS-M communications spacecraft and Cygnus cargo capsules. In November 2017, NOAA’s NOAA-20 weather satellite was launched by a Delta II vehicle.

January 2018 saw an Atlas V carry the SBIRS-GEO 4 military satellite into orbit. That year also marked the first interplanetary probe launched from the U.S. West Coast when NASA’s InSight Mars lander was sent on an Atlas V rocket. August brought a record-setting launch of NASA's Parker Solar Probe aboard a Delta IV Heavy with a Star-48BV kick stage achieving unprecedented spacecraft velocity. September 2018 marked the final flight of a Delta II rocket carrying ICESat-2 from Vandenberg Air Force Base—concluding Thor-derived launch vehicle operations.

On August 22, 2019, ULA completed its last Delta IV Medium mission with the GPS III Magellan launch. December witnessed an Atlas V deploying Boeing’s Starliner Orbital Flight Test for NASA.

These launch activities underscore ULA’s strategic dominance in governmental and commercial space sectors by consistently providing dependable access to orbit for critical defense assets, scientific instruments, and communication platforms.

2020

In the year 2020, an Atlas V rocket was responsible for launching the Solar Orbiter, a collaborative mission between ESA and NASA designed to provide unprecedented global observations of the Sun. March witnessed the deployment of AEHF-6 via Atlas V, marking the inaugural National Security Mission for the U.S. Space Force. During May, the USSF-7 mission launched the X-37B spaceplane, dedicated to honoring those affected by COVID-19 and essential frontline workers. On July 30, an Atlas V 541 successfully delivered the Perseverance rover alongside the Ingenuity helicopter as part of the Mars 2020 mission. November’s NROL-101 launch deployed a classified satellite for the National Reconnaissance Office, notable for being the first mission to utilize GEM-63 solid rocket boosters, which are slated for future use on the Vulcan Centaur launch vehicle.

2021

On May 18, 2021, Atlas V 421 launched the SBIRS GEO 5 missile-warning satellite, enhancing U.S. national defense capabilities. Later, on October 16, ULA’s Atlas V 401 carried the Lucy spacecraft on a twelve-year interplanetary journey aimed at investigating Trojan asteroids near Jupiter as well as conducting a flyby of a mainbelt asteroid. This mission underscores ULA’s prominent role in providing dependable launch services that enable extended scientific exploration endeavors.

Launch facilities

As of June 2024, ULA maintains two main launch sites: Space Launch Complex 41 located at Cape Canaveral Space Force Station, Florida, and Space Launch Complex 3 situated at Vandenberg Space Force Base, California. The Cape Canaveral facility features a crew access arm tailored for human spaceflight missions, with launches generally directed eastward to capitalize on Earth’s rotational velocity for satellites destined for planetary or equatorial orbits. Vandenberg functions as the primary U.S. location for deploying imaging and meteorological satellites into polar orbits, fulfilling global observation requirements.

Since its establishment in 2006, ULA has consolidated its launch infrastructure from seven pads down to these two principal complexes. Earlier operations included additional pads at Cape Canaveral’s Space Launch Complexes 17 and 37 dedicated to Delta rocket launches, as well as Space Launch Complexes 2 and 6 at Vandenberg. This rationalization aligns with ULA’s strategic emphasis on operational efficiency and cost-effectiveness within its business framework, reinforcing its competitive stance in the aerospace launch sector.

Headquarters and manufacturing

ULA’s corporate headquarters in Centennial, Colorado manages program oversight, rocket design engineering, testing procedures, and launch support activities. Its largest production facility is located in Decatur, Alabama. In 2015, ULA inaugurated an engineering and propulsion testing center in Pueblo, Colorado. Up until 2024, the company also operated a manufacturing plant in Harlingen, Texas dedicated to producing and assembling components for Atlas V rockets.

Spaceflight Processing Operations Center

The Spaceflight Processing Operations Center (SPOC), positioned near Cape Canaveral’s Space Launch Complex 41, is responsible for assembling the mobile launcher platform (MLP) for Vulcan Centaur missions and storing the MLP used by Atlas V vehicles. The initial components for Vulcan’s MLP arrived at SPOC on August 6, 2019. Previously known as the Solid Motor Assembly and Readiness Facility (SMARF) during support of Titan IVB launches, it was renamed SPOC in October 2019.

See also

Additional launch service providers


External links

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