Atlas V ( "V" is pronounced "Five") is an expendable launch system in the Atlas rocket family. It was formerly operated by Lockheed Martin and is now operated by United Launch Alliance (ULA), a joint venture with Boeing. Each Atlas V rocket uses a Russian-built RD-180 engine burning kerosene and liquid oxygen to power its first stage and an American-built RL10 engine burning liquid hydrogen and liquid oxygen to power its Centaur upper stage. The RD-180 engines are provided by RD Amross, while Aerojet Rocketdyne provides both the RL10 engines and the strap-on boosters used in some configurations. The standard payload fairing sizes are 4 or 5 meters in diameter and of various lengths. Fairings sizes as large as 7.2 m in diameter and up to 32.3 m in length have been considered. The rocket is assembled in Decatur, Alabama and Harlingen, Texas.
|Function||EELV/medium-heavy launch vehicle|
|Manufacturer||United Launch Alliance|
|Country of origin||United States|
|Cost per launch||US$109 million in 2016|
|Height||58.3 m (191 ft)|
|Diameter||3.81 m (12.5 ft)|
|Mass||334,500 kg (737,400 lb)|
|Payload to LEO||8,250–20,520 kg (18,190–45,240 lb)|
|Payload to GTO||4,750–8,900 kg (10,470–19,620 lb)|
|Family||Atlas (rocket family)|
|Launch sites||Cape Canaveral SLC-41|
(401: 38, 411: 5, 421: 7, 431: 3)
(501: 6, 521: 2, 531: 3, 541: 6, 551: 9)
(401: 37, 411: 5, 421: 7, 431: 3)
(501: 6, 521: 2, 531: 3, 541: 6, 551: 9)
|Partial failures||1 (401 – low orbit, customer declared success)|
|First flight||21 August 2002 (Hot Bird 6)|
|Last flight||17 October 2018 (AEHF-4)|
|Boosters – AJ-60A|
|No. boosters||0 to 5|
|Length||17.0 m (669 in)|
|Diameter||1.6 m (62 in)|
|Gross mass||46,697 kg (102,949 lb)|
|Propellant mass||42,630 kg (93,980 lb) |
|Thrust||1,688.4 kN (379,600 lbf)|
|Specific impulse||279.3 s (2.739 km/s)|
|Burn time||94 seconds|
|First stage – Atlas CCB|
|Length||32.46 m (106.5 ft)|
|Diameter||3.81 m (12.5 ft)|
|Empty mass||21,054 kg (46,416 lb)|
|Propellant mass||284,089 kg (626,309 lb)|
|Thrust||3,827 kN (860,000 lbf) (SL)|
4,152 kN (933,000 lbf) (vac)
|Specific impulse||311.3 s (3.053 km/s) (SL)|
337.8 s (3.313 km/s) (vac)
|Burn time||253 seconds|
|Fuel||RP-1 / LOX|
|Second stage – Centaur|
|Length||12.68 m (41.6 ft)|
|Diameter||3.05 m (10.0 ft)|
|Empty mass||2,316 kg (5,106 lb)|
|Propellant mass||20,830 kg (45,920 lb)|
|Engines||1 RL10A or 1 RL10C|
|Thrust||99.2 kN (22,300 lbf) (RL10A)|
|Specific impulse||450.5 s (4.418 km/s) (RL10A-4-2)|
|Burn time||842 seconds (RL10A-4-2)|
|Fuel||LH2 / LOX|
The Atlas V was developed by Lockheed Martin Commercial Launch Services as part of the US Air Force Evolved Expendable Launch Vehicle (EELV) program and made its inaugural flight on August 21, 2002. The vehicle operates out of Space Launch Complex 41 at Cape Canaveral Air Force Station and Space Launch Complex 3-E at Vandenberg Air Force Base. Lockheed Martin Commercial Launch Services continued to market the Atlas V to commercial customers worldwide until January 2018, when ULA assumed control of commercial marketing and sales.
Atlas V first stageEdit
The Atlas V first stage, the Common Core Booster (CCB), is 12.5 ft (3.8 m) in diameter and 106.6 ft (32.5 m) in length. It is powered by a single Russian RD-180 main engine burning 627,105 lb (284,450 kg) of liquid oxygen and RP-1. The booster operates for about four minutes, providing about 4 meganewtons (860,000 lbf) of thrust. Thrust can be augmented with up to five Aerojet strap-on solid rocket boosters, each providing an additional 1.27 meganewtons (285,500 lbf) of thrust for 94 seconds.
The Atlas V is the newest member of the Atlas family. Compared to the Atlas III vehicle, there are numerous changes. Compared to the Atlas II, the first stage is a near-redesign. There was no Atlas IV.
The main features of the Atlas V with regards to the Atlas family are:
- The first stage tanks no longer use stainless-steel monocoque "balloon" construction. The tanks are isogrid aluminum and are structurally stable when unpressurized.
- Use of aluminium, with a higher thermal conductivity than stainless steel, requires insulation for the liquid oxygen. The tanks are covered in a polyurethane-based layer.
- Accommodation points for parallel stages, both smaller solids and identical liquids, are built into first-stage structures.
- The "1.5 staging" technique is no longer used, having been discontinued on the Atlas III with the introduction of the Russian RD-180 engine. The RD-180 features a dual combustion chamber, dual-nozzle design and is fueled by a kerosene/liquid oxygen mixture.
- The main-stage diameter increased from 10 feet to 12.5 feet. As with the Atlas III, the different mixture ratio of the engine called for a larger oxygen tank (relative to the fuel tank) compared to Western engines and stages.
Centaur upper stageEdit
The Centaur upper stage uses a pressure-stabilized propellant-tank design and cryogenic propellants. The Centaur stage for Atlas V is stretched 5.5 ft (1.68 m) relative to the Atlas IIAS Centaur and is powered by either one or two Aerojet Rocketdyne RL10A-4-2 engines, each engine developing a thrust of 99.2 kN (22,300 lbf). The inertial navigation unit (INU) located on the Centaur provides guidance and navigation for both the Atlas and Centaur and controls both Atlas and Centaur tank pressures and propellant use. The Centaur engines are capable of multiple in-space starts, making possible insertion into low Earth parking orbit, followed by a coast period and then insertion into GTO. A subsequent third burn following a multi-hour coast can permit direct injection of payloads into geostationary orbit. As of 2006[update], the Centaur vehicle had the highest proportion of burnable propellant relative to total mass of any modern hydrogen upper stage and hence can deliver substantial payloads to a high-energy state.
Atlas V payload fairings are available in two diameters, depending on satellite requirements. The 4.2-meter fairing, originally designed for the Atlas II booster, comes in three different lengths: the original 9-meter-long version, as well as 10-meter and 11-meter versions, first flown respectively on the AV-008/Astra 1KR and AV-004/Inmarsat-4 F1 missions.
A wider 5.4-meter fairing (4.57 meters internally usable) was developed and built by RUAG Space in Switzerland. The RUAG fairing uses carbon fiber composite construction, based on flight-proven hardware from the Ariane 5. Three configurations are manufactured to support the Atlas V: 20.7, 23.4 and 26.5 meters long. While the classic 4-meter fairing covers only the payload, the RUAG fairing is much longer because it fully encloses the Centaur stage, as well as the payload.
Many systems on the Atlas V have been the subject of upgrade and enhancement both prior to the first Atlas V flight and since that time. Work on a new Fault Tolerant Inertial Navigation Unit (FTINU) started in 2001 to enhance mission reliability for Atlas vehicles by replacing the existing non-redundant navigation and computing equipment with a fault-tolerant unit. The upgraded FTINU first flew in 2006,[full citation needed] and in 2010 a follow-on order for more FTINU units was awarded.[full citation needed]
Atlas V CTS (Crew Transportation System)Edit
From 2006 through at least 2014 ULA made proposals and did some design work for a human-rated version of the Atlas V. Atlas V was selected by NASA in late 2014, in conjunction with the Boeing CST-100 space capsule, to be used for human flight from 2018.
The work began as early as 2006, by ULA's predecessor company Lockheed Martin. An agreement between Lockheed and Bigelow Aerospace that year was reported that could lead to commercial private trips to low Earth orbit (LEO).
Beginning in 2010, ULA did design and simulation work to human-rate the Atlas V for carrying passengers. ULA won a 2010 small contract of US$6,700,000 in the first phase of the NASA Commercial Crew Program (CCP) to develop an Emergency Detection System (EDS) for human-rating the Atlas V launch vehicle. As of February 2011[update], ULA "is still finishing up work on its $6.7-million award... In December ULA carried out a demonstration of its Emergency Detection System ... The company said it received an extension from NASA until April 2011 'to enable us to finish critical timing analyses tasks' for [the] fault coverage analysis work."
NASA solicited proposals for CCP phase 2 in October 2010, under which ULA made a proposal for funding to "finish designing a key safety system for potential commercial crew launches on its Atlas and Delta rocket fleet". While NASA's goal then was to get astronauts to orbit by 2015, ULA President and CEO Michael Gass stated: "I think we need to stretch our goals to have commercial crew service operating by 2014" and committed ULA to meet that schedule if funded. Other than the addition of the Emergency Detection System, no major changes were expected to the Atlas V rocket, but ground infrastructure modifications were planned. The most likely candidate for the human-rating was the 402 configuration, with dual RL10 engines on the Centaur upper stage and no solid rocket boosters.
On July 18, 2011 NASA and ULA announced an agreement on the possibility of certifying the Atlas V to NASA's "human-rating" standards. ULA agreed to provide NASA with data on the Atlas V, while NASA would provide ULA with draft human certification requirements. As of July 2011[update] Bigelow Aerospace was still considering the use of a human-rated Atlas V for carrying spaceflight participants to its private space station.
In 2011, Sierra Nevada Corporation (SNC) picked the Atlas V to be the booster for its still-under-development Dream Chaser crewed spacecraft. The Dream Chaser is designed to be a crewed vertical-takeoff, horizontal-landing (VTHL) lifting-body spaceplane that will be placed into LEO by an Atlas V, and is a proposed CCDev ISS crew transport vehicle. However, in late 2014 NASA did not select the Dream Chaser to be one of the two vehicles selected under the Commercial Crew competition.
On August 4, 2011 Boeing announced that it would use the Atlas V as the initial launch vehicle for its CST-100 crewed spaceship, intended for both NASA-funded trips to the International Space Station, as well as for private trips to the proposed Bigelow Commercial Space Station. As of August 2011[update], a three-flight test program had been projected to be completed by 2015, and potentially certify the Atlas V/CST-100 combination for human-spaceflight operations. The first flight was expected to include an Atlas V rocket integrated with an unpiloted CST-100 capsule, to launch from Cape Canaveral's LC-41 in early 2015 into LEO, with the second flight hoped to be an in-flight launch abort system demonstration in the middle of that year, and the test-flight phase expected to culminate with a crewed mission at the end of 2015, carrying two Boeing test-pilot astronauts into LEO and returning them safely. As of 2018[update], the spacecraft is expected to fly unmanned in March 2019 with a first crewed test flight in August 2019
New solid boostersEdit
In 2015, ULA announced that the Aerojet Rocketdyne-produced AJ-60A solid rocket boosters (SRBs) currently in use on Atlas V will be phased out in favor of new GEM 63 boosters produced by Orbital ATK. A stretched version of this booster will be used on the upcoming Vulcan rocket.
Each Atlas V booster configuration has a three-digit designation that indicates the features of that configuration. The first digit shows the diameter (in meters) of the payload fairing and always has a value of "4" or "5". The second digit indicates the number of solid rocket boosters attached to the base of the rocket and can range from "0" through "3" with the 4-meter fairing, and "0" through "5" with the 5-meter fairing. As shown on the right, all layouts of solid boosters are asymmetrical. The third digit represents the number of engines on the Centaur stage, either "1" or "2". For example, an Atlas V 552 has a 5-meter fairing, 5 solid rocket boosters, and 2 Centaur engines, whereas an Atlas V 431 has a 4-meter fairing, 3 solid rocket boosters, and 1 Centaur engine. As of October 2018, only the single-engine Centaur (SEC) has been used. The first launch using the dual-engine Centaur (DEC) upper stage is planned for 2019, when an Atlas V with no payload fairing and 2 strap on boosters will carry the Starliner vehicle for its first orbital test flight. It is scheduled for NET March 2019.
As of June 2015, all versions of the Atlas V, its design and production rights, and intellectual property rights are owned by ULA and Lockheed Martin.
List date: October 17, 2018 Mass to LEO numbers are at an inclination of 28.5°.
|Version||Fairing||CCBs||SRBs||Upper stage||Payload to LEO, kg||Payload to GTO, kg||Launches to date||Base price|
|Heavy (HLV / 5H1)||5.4 m||3||–||SEC||–||–||0||–|
|Heavy (HLV DEC / 5H2)||5.4 m||3||–||DEC||29,400||–||0||–|
|N22 (for Starliner)||None||1||2||DEC||~13,000
Since 2016 ULA has provided pricing for the Atlas V through its RocketBuilder website, advertising a base price for each rocket configuration, which ranges from $109 million for the 401 up to $153 million for the 551. Each additional SRB adds an average of $6.8 million to the cost of the rocket. On top of the base price, commercial customers can also choose to purchase larger payload fairings or additional launch service options. NASA and Air Force launch costs are often higher than equivalent commercial missions, due to additional government accounting, analysis, and processing requirements. These government requirements can add $30–$80 million to the cost of a launch.
Before 2016, ULA did not publicly advertise a price for Atlas V launches, and so cost data was limited to the few for which prices were disclosed. In 2010, NASA contracted with ULA to launch the MAVEN mission on an Atlas V 401 for approximately $187 million. The 2013 cost of this configuration for the Air Force under their block buy of 36 rockets was $164 million. In 2015, the TDRS-M mission aboard this same rocket cost NASA $132.4 million.
The Atlas V historically was not cost-competitive for most commercial launches, where launch costs were about $100 million per satellite to GTO in 2013. The price drop from approximately $180 million to $109 million has been in large part due to competitive pressure that emerged in the launch services marketplace during the early 2010s, with United Launch Alliance CEO Tory Bruno stating that ULA needs at least 2 commercial missions each year in order to stay profitable. Still, the company is not attempting to win these missions on purely lowest purchase price, stating that it "would rather be the best value provider". ULA suggests that customers will have much lower insurance and delay costs because of the high Atlas V reliability and schedule certainty, making overall customer costs close to that of using competitors like the SpaceX Falcon 9.
Atlas V launchesEdit
Last updated on October 20, 2018
|#||Date and time(UTC)||Type||Serial no.||Launch site||Payload||Type of payload||Orbit||Outcome||Remarks|
|1||August 21, 2002
|401||AV-001||CCAFS SLC-41||Hot Bird 6||Commercial communications satellite||GTO||Success||First Atlas V launch|
|2||May 13, 2003
|401||AV-002||CCAFS SLC-41||Hellas Sat 2||Commercial communications satellite||GTO||Success||First satellite for Greece and Cyprus|
|3||July 17, 2003
|521||AV-003||CCAFS SLC-41||Rainbow 1||Commercial communications satellite||GTO||Success||First Atlas V 500 launch|
First Atlas V launch with SRBs
|4||December 17, 2004
|521||AV-005||CCAFS SLC-41||AMC 16||Commercial communications satellite||GTO||Success|
|5||March 11, 2005
|431||AV-004||CCAFS SLC-41||Inmarsat 4-F1||Commercial communications satellite||GTO||Success||First Atlas V 400 launch with SRBs|
|6||August 12, 2005
|401||AV-007||CCAFS SLC-41||Mars Reconnaissance Orbiter||Mars orbiter||Heliocentric to
|Success||First Atlas V launch for NASA|
|7||January 19, 2006
|551||AV-010||CCAFS SLC-41||New Horizons||Pluto and Kuiper Belt probe||Hyperbolic||Success||Boeing Star 48B third stage used, first Atlas V launch with a third stage|
|8||April 20, 2006
|411||AV-008||CCAFS SLC-41||Astra 1KR||Commercial communications satellite||GTO||Success|
|9||March 9, 2007
|401||AV-013||CCAFS SLC-41||Space Test Program-1||6 military research satellites||LEO||Success|
|10||June 15, 2007
|401||AV-009||CCAFS SLC-41||USA-194 (NRO L-30/NOSS-4-3A & B)||Two NRO Reconnaissance satellites||LEO||Partial failure||First Atlas V flight for the National Reconnaissance Office Payload reached lower than intended orbit; customer declared success.|
|11||October 11, 2007
|421||AV-011||CCAFS SLC-41||USA-195 (WGS SV-1)||Military communications satellite||GTO||Success||Valve replacement|
|12||December 10, 2007
|401||AV-015||CCAFS SLC-41||USA-198 (NRO L-24)||NRO reconnaissance satellite||Molniya||Success|
|13||March 13, 2008
|411||AV-006||VAFB SLC-3E||USA-200 (NRO L-28)||NRO reconnaissance satellite||Molniya||Success||First Atlas V launch from Vandenberg|
|14||April 14, 2008
|421||AV-014||CCAFS SLC-41||ICO G1||Commercial communications satellite||GTO||Success|
|15||April 4, 2009
|421||AV-016||CCAFS SLC-41||USA-204 (WGS SV2)||Military communications satellite||GTO||Success|
|16||June 18, 2009
|401||AV-020||CCAFS SLC-41||LRO/LCROSS||Lunar exploration||HEO to Lunar||Success||First Centaur stage to impact on the Moon.|
|17||September 8, 2009
|401||AV-018||CCAFS SLC-41||USA-207 (PAN)||Military communications satellite||GTO||Success|
|18||October 18, 2009
|401||AV-017||VAFB SLC-3E||USA-210 (DMSP 5D3-F18)||Military weather satellite||LEO||Success|
|19||November 23, 2009
|431||AV-024||CCAFS SLC-41||Intelsat 14||Commercial communications satellite||GTO||Success||LMCLS launch|
|20||February 11, 2010
|401||AV-021||CCAFS SLC-41||SDO||Solar telescope||GTO||Success|
|21||April 22, 2010
|501||AV-012||CCAFS SLC-41||USA-212 (X-37B OTV-1)||Military orbital test vehicle||LEO||Success||A piece of the external fairing did not break up on impact, but washed up on Hilton Head Island.|
|22||August 14, 2010
|531||AV-019||CCAFS SLC-41||USA-214 (AEHF-1)||Military communications satellite||GTO||Success|
|23||September 21, 2010
|501||AV-025||VAFB SLC-3E||USA-215 (NRO L-41)||NRO reconnaissance satellite||LEO||Success|
|24||March 5, 2011
|501||AV-026||CCAFS SLC-41||USA-226 (X-37B OTV-2)||Military orbital test vehicle||LEO||Success|
|25||April 15, 2011
|411||AV-027||VAFB SLC-3E||USA-229 (NRO L-34)||NRO reconnaissance satellite||LEO||Success|
|26||May 7, 2011
|401||AV-022||CCAFS SLC-41||USA-230 (SBIRS-GEO-1)||Missile Warning satellite||GTO||Success|
|27||August 5, 2011
|551||AV-029||CCAFS SLC-41||Juno||Jupiter orbiter||Hyperbolic to
|28||November 26, 2011
|541||AV-028||CCAFS SLC-41||Mars Science Laboratory||Mars rover||Hyperbolic
|Success||First launch of the 541 configuation|
Centaur entered orbit around the sun
|29||February 24, 2012
|551||AV-030||CCAFS SLC-41||MUOS-1||Military communications satellite||GTO||Success||
|30||May 4, 2012
|531||AV-031||CCAFS SLC-41||USA-235 (AEHF-2)||Military communications satellite||GTO||Success|
|31||June 20, 2012
|401||AV-023||CCAFS SLC-41||USA-236 (NROL-38)||NRO reconnaissance satellite||GTO||Success||50th EELV launch|
|32||August 30, 2012
|401||AV-032||CCAFS SLC-41||Van Allen Probes (RBSP)||Van Allen Belts exploration||HEO||Success|
|33||September 13, 2012
|401||AV-033||VAFB SLC-3E||USA-238 (NROL-36)||NRO reconnaissance satellites||LEO||Success|
|34||December 11, 2012
|501||AV-034||CCAFS SLC-41||USA-240 (X-37B OTV-3)||Military orbital test vehicle||LEO||Success|
|35||January 31, 2013
|401||AV-036||CCAFS SLC-41||TDRS-K (TDRS-11)||Data relay satellite||GTO||Success|
|36||February 11, 2013
|401||AV-035||VAFB SLC-3E||Landsat 8||Earth Observation satellite||LEO||Success||First West Coast Atlas V Launch for NASA|
|37||March 19, 2013
|401||AV-037||CCAFS SLC-41||USA-241 (SBIRS-GEO 2)||Missile Warning satellite||GTO||Success|
|38||May 15, 2013
|401||AV-039||CCAFS SLC-41||USA-242 (GPS IIF-4)||Navigation satellite||MEO||Success||*First GPS satellite launched by an Atlas V
|39||July 19, 2013
|551||AV-040||CCAFS SLC-41||MUOS-2||Military Communications satellite||GTO||Success|
|40||September 18, 2013
|531||AV-041||CCAFS SLC-41||USA-246 (AEHF-3)||Military communications satellite||GTO||Success|
|41||November 18, 2013
|401||AV-038||CCAFS SLC-41||MAVEN||Mars orbiter||Hyperbolic to
|42||December 6, 2013
|501||AV-042||VAFB SLC-3E||USA-247 (NROL-39)||NRO reconnaissance satellite||LEO||Success|
|43||January 24, 2014
|401||AV-043||CCAFS SLC-41||TDRS-L (TDRS-12)||Data relay satellite||GTO||Success|
|44||April 3, 2014
|401||AV-044||VAFB SLC-3E||USA-249 (DMSP-5D3 F19)||Military weather satellite||LEO||Success||50th RD-180 launch|
|45||April 10, 2014
|541||AV-045||CCAFS SLC-41||USA-250 (NROL-67)||NRO reconnaissance satellite||GTO||Success|
|46||May 22, 2014
|401||AV-046||CCAFS SLC-41||USA-252 (NROL-33)||NRO reconnaissance satellite||GTO||Success|
|47||August 2, 2014
|401||AV-048||CCAFS SLC-41||USA-256 (GPS IIF-7)||Navigation satellite||MEO||Success|
|48||August 13, 2014
|401||AV-047||VAFB SLC-3E||WorldView-3||Earth imaging satellite||LEO||Success|
|49||September 17, 2014
|401||AV-049||CCAFS SLC-41||USA-257 (CLIO)||Military communications satellite||GTO||Success|
|50||October 29, 2014
|401||AV-050||CCAFS SLC-41||USA-258 (GPS IIF-8)||Navigation satellite||MEO||Success||50th Atlas V launch|
|51||December 13, 2014
|541||AV-051||VAFB SLC-3E||USA-259 (NROL-35)||NRO reconnaissance satellite||Molniya||Success||First use of the RL-10C engine on the Centaur stage|
|52||January 21, 2015
|551||AV-052||CCAFS SLC-41||MUOS-3||Military Communications satellite||GTO||Success|
|53||March 13, 2015
|421||AV-053||CCAFS SLC-41||MMS||Magnetosphere research satellites||HEO||Success|
|54||May 20, 2015
|501||AV-054||CCAFS SLC-41||USA-261 (X-37B OTV-4/AFSPC-5)||Military orbital test vehicle||LEO||Success|
|55||July 15, 2015
|401||AV-055||CCAFS SLC-41||USA-262 (GPS IIF-10)||Navigation satellite||MEO||Success|
|56||September 2, 2015
|551||AV-056||CCAFS SLC-41||MUOS-4||Military Communications satellite||GTO||Success|
|57||October 2, 2015
|421||AV-059||CCAFS SLC-41||Mexsat-2||Communications satellite||GTO||Success|
|58||October 8, 2015
|401||AV-058||VAFB SLC-3E||USA-264 (NROL-55)||NRO reconnaissance satellites||LEO||Success|
|59||October 31, 2015
|401||AV-060||CCAFS SLC-41||USA-265 (GPS IIF-11)||Navigation satellite||MEO||Success|
|60||December 6, 2015
|401||AV-061||CCAFS SLC-41||Cygnus CRS OA-4||ISS logistics spacecraft||LEO||Success||First Atlas rocket used to directly support the ISS program|
|61||February 5, 2016
|401||AV-057||CCAFS SLC-41||USA-266 (GPS IIF-12)||Navigation satellite||MEO||Success|
|62||March 23, 2016
|401||AV-064||CCAFS SLC-41||Cygnus CRS OA-6||ISS logistics spacecraft||LEO||Success||First stage shut down early but did not affect mission outcome|
|63||June 24, 2016
|551||AV-063||CCAFS SLC-41||MUOS-5||Military Communications satellite||GTO||Success|
|64||July 28, 2016
|421||AV-065||CCAFS SLC-41||USA-267 (NROL-61)||NRO reconnaissance satellite||GTO||Success|
|65||September 8, 2016
|411||AV-067||CCAFS SLC-41||OSIRIS-REx||Asteroid sample return||Heliocentric||Success|
|66||November 11, 2016
|401||AV-062||VAFB SLC-3E||WorldView-4 (GeoEye-2) + 7 NRO cubesats||Earth Imaging, cubesats||SSO||Success||LMCLS launch|
|67||November 19, 2016
|541||AV-069||CCAFS SLC-41||GOES-R (GOES-16)||Meteorology||GTO||Success||100th EELV launch|
|68||December 18, 2016
|431||AV-071||CCAFS SLC-41||EchoStar 19 (Jupiter 2)||Communication satellite||GTO||Success||LMCLS launch|
|69||January 21, 2017
|401||AV-066||CCAFS SLC-41||USA-273 (SBIRS GEO-3)||Missile Warning satellite||GTO||Success|
|70||March 1, 2017
|401||AV-068||VAFB SLC-3E||USA-274 (NROL-79)||NRO Reconnaissance Satellite||LEO||Success|
|71||April 18, 2017
|401||AV-070||CCAFS SLC-41||Cygnus CRS OA-7||ISS logistics spacecraft||LEO||Success|
|72||August 18, 2017
|401||AV-074||CCAFS SLC-41||TDRS-M (TDRS-13)||Data relay satellite||GTO||Success|
|73||September 24, 2017
|541||AV-072||VAFB SLC-3E||USA-278 (NROL-42)||NRO Reconnaissance Satellite||Molniya||Success|
|74||October 15, 2017
|421||AV-075||CCAFS SLC-41||USA-279 (NROL-52)||NRO Reconnaissance satellite||GTO||Success|
|75||January 20, 2018
|411||AV-076||CCAFS SLC-41||USA-282 (SBIRS GEO-4)||Missile Warning satellite||GTO||Success|
|76||March 1, 2018
|541||AV-077||CCAFS SLC-41||GOES-S (GOES-17)||Meteorology||GTO||Success||Expended the 100th AJ-60 SRB|
|77||April 14, 2018
|551||AV-079||CCAFS SLC-41||AFSPC-11||Military comsat||GEO||Success|
|78||May 5, 2018
|401||AV-078||VAFB SLC-3E||InSight MarCO||Mars lander; 2 CubeSats||Hyperbolic
|Success||First interplanetary mission from VAFB; first interplanetary CubeSats.|
|79||October 17, 2018,
|551||AV-073||CCAFS SLC-41||USA-288 (AEHF-4)||Military comsat||GTO||Success||250th Centaur|
The first payload launched with an Atlas V was the Hot Bird 6 communications satellite launched from Cape Canaveral in a 401 configuration. It carried the communications satellite into geostationary transfer orbit (GTO) on August 21, 2002.
On August 12, 2005, Mars Reconnaissance Orbiter was launched aboard an Atlas V 401 rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station. The Centaur upper stage of the rocket completed its burns over a 56-minute period and placed MRO into an interplanetary transfer orbit towards Mars
On January 19, 2006, New Horizons was launched by a Lockheed Martin Atlas V 551 rocket, with a third stage added to increase the heliocentric (escape) speed. This was the first launch of the Atlas V 551 configuration, which uses five solid rocket boosters, and the first Atlas V with a third stage.
On September 8, 2016, the OSIRIS-REx Asteroid Sample Return Mission was launched on an Atlas V rocket in the 411 configuration. It will arrive at the asteroid Bennu in 2018 and return with a sample ranging from 60 grams to 2 kilograms in 2023.
The first four Boeing X-37B spaceplane missions were successfully launched with the Atlas V. The X-37B is a reusable unmanned spacecraft operated by USAF, which is also known as the Orbital Test Vehicle (OTV) that can autonomously conduct landings from orbit to a runway. The first four X-37B launches with the Atlas V were conducted from the Cape Canaveral Air Force Station in Florida with subsequent landings taking place on a 15,000-foot (4,600 m) runway located at Vandenberg Air Force Base in California that was originally designed for Space Shuttle return from orbit operations.
Mission success recordEdit
In its more than 75 launches (as of March 2018), starting with its maiden launch in August 2002, Atlas V has had an almost perfect mission success rate. This is in contrast to the industry failure rate of 5–10%. However, there have been two anomalous flights that – while still successful in their mission – prompted a grounding of the Atlas fleet while investigations determined the root cause of their problems.
The first anomalous event in the use of the Atlas V launch system occurred on June 15, 2007, when the engine in the Centaur upper stage of an Atlas V shut down early, leaving its payload – a pair of NRO L-30 ocean surveillance satellites – in a lower than intended orbit. The cause of the anomaly was traced to a leaky valve, which allowed fuel to leak during the coast between the first and second burns. The resulting lack of fuel caused the second burn to terminate 4 seconds early. Replacing the valve led to a delay in the next Atlas V launch. However, the customer (the National Reconnaissance Office) categorized the mission as a success.
A flight on March 23, 2016, suffered an underperformance anomaly on the first-stage burn and shut down 5 seconds early. The Centaur proceeded to boost the Orbital Cygnus payload, the heaviest on an Atlas to date, into the intended orbit by utilizing its fuel reserves to make up for the shortfall from the first stage. This longer burn cut short a later Centaur disposal burn. An investigation of the incident revealed that this anomaly was due to a fault in the main engine mixture-ratio supply valve, which restricted the flow of fuel to the engine. The investigation and subsequent examination of the valves on upcoming missions led to a delay of the next several launches.
Proposed development optionsEdit
Replacement for the RD-180 engineEdit
Geopolitical and US political considerations in 2014 led to an effort by ULA to consider the possible replacement of the Russian-supplied RD-180 engine used on the first-stage booster of the Atlas V. Formal study contracts were issued in June 2014 to a number of US rocket-engine suppliers. The results of those studies have led to decisions by ULA to develop a new launch vehicle to replace the Atlas V and Delta IV existing fleet.
The Aerojet AR1 rocket engine under development as of 2017, is a backup plan to the successor rocket Vulcan, to re-engine the Atlas V. In addition to the ULA backup plan, a consortium of companies including Aerojet and Dynetics seek license production or rights to the Atlas V to manufacture it using the AR1 engine in place of the RD-180. This proposal has been declined by ULA. The private company Blue Origin is developing the BE-4 LOX/methane engine as an RD-180 replacement.
Atlas V HeavyEdit
In 2006, ULA offered an Atlas V Heavy option that would use three Common Core Booster (CCB) stages strapped together to lift a 29,400 kg payload to low Earth orbit. ULA stated at the time that 95% of the hardware required for the Atlas V Heavy has already been flown on the Atlas V single-core vehicles. The lifting capability of the proposed rocket was to be roughly equivalent to the Delta IV Heavy, which utilizes RS-68 engines developed and produced domestically by Aerojet Rocketdyne.
A 2006 report, prepared by the RAND Corporation for the Office of the Secretary of Defense, stated that Lockheed Martin had decided not to develop an Atlas V heavy-lift vehicle (HLV). The report recommended for the Air Force and the National Reconnaissance Office to "determine the necessity of an EELV heavy-lift variant, including development of an Atlas V Heavy", and to "resolve the RD-180 issue, including coproduction, Stockpile, or U.S. development of an RD-180 replacement".
In March 2015, Bruno confirmed on Twitter that the Atlas V Heavy will not be developed, instead they would be focusing on the Next Gen Launch System (Vulcan).
Atlas Phase 2Edit
With the merger of Boeing and Lockheed Martin space operations into United Launch Alliance in the mid-2000s, the Atlas V program became able to share the tooling and processes for 5-meter-diameter stages used on Delta IV. This led to a concept being put forth to combine Delta IV production processes into a new Atlas design: the "Atlas Phase 2". If the first stage were to be 5 meters in diameter, such a stage could accept dual RD-180 engines. The conceptual heavy-lift vehicle was known as Atlas Phase 2 or "PH2".
An Atlas V PH2-Heavy (three 5 m stages in parallel; six RD-180s) along with Shuttle-derived, Ares V and Ares V Lite, was considered as a theoretically possible heavy lifter for use in future space missions in the Augustine Report. If built, the Atlas PH2 Heavy was projected to be able to launch a payload mass of approximately 70 metric tons into an orbit of 28.5° inclination. None of the Atlas V Phase 2 proposals reached development.
The Atlas V Common Core Booster was to have been used as the first stage of the joint US-Japanese GX rocket, which was scheduled to make its maiden flight in 2012. GX launches would have been from the Atlas V launch complex at Vandenberg AFB, SLC-3E.
In December 2009, the Japanese government decided to cancel the GX project.
In September 2014, ULA announced that it has entered into a partnership with Blue Origin to develop the BE-4 LOX/methane engine to replace the RD-180 on a new first-stage booster. As the Atlas V core is designed around RP-1 fuel and cannot be retrofitted to use a methane-fueled engine, a new first stage must be developed. This booster will be derived from the first-stage tankage of the Delta IV, using two of the 2,400-kilonewton (550,000 lbf)-thrust BE-4 engines. The engine is already in its third year of development by Blue Origin, and ULA expects the new stage and engine to start flying no earlier than 2019.
Vulcan will initially use the same Centaur upper stage as on Atlas V, later to be upgraded to ACES. It will also use a variable number of optional solid rocket boosters, called the GEM 63XL, derived from the new solid boosters planned for Atlas V.
X-37B OTV-1 (Orbital Test Vehicle) being encased in its payload fairing for its April 22, 2010 launch
- Ariane 5
- Chang Zheng 5
- Delta IV
- Falcon 9
- Falcon Heavy
- Geosynchronous Satellite Launch Vehicle Mk III
- Comparison of orbital launchers families
- Comparison of orbital launch systems
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- "RocketBuilder". United Launch Alliance. 2017-03-10. Retrieved 2017-03-10.
- Gunter's Space Page – Atlas V (401). Space.skyrocket.de. Retrieved on 2011-11-19. Archived 1 May 2013 at WebCite
- "Atlas V Solid Rocket Motor". Aerojet Rocketdyne. Retrieved 2015-06-02.
- "Space Launch Report: Atlas 5 Data Sheet". Space Launch Report. October 15, 2017.
- "Atlas V Launch Services User's Guide" (PDF). Centennial, CO: United Launch Alliance. March 2010. Archived from the original (PDF) on 2013-05-14. Retrieved 2011-12-04.
- "Lockheed Martin Ready For Launch Of Intelsat 14 Spacecraft". Lockheed Martin. November 11, 2009. Archived from the original on 2011-12-17.
- "United Launch Alliance Assumes Marketing and Sales for Atlas V from Lockheed Martin – Parabolic Arc". www.parabolicarc.com. Parabolic Arc. Retrieved 19 July 2018.
- "Atlas V Launch Services User's Guide" (PDF). United Launch Alliance. March 2010. p. 1-5 to 1-7. Archived from the original (PDF) on 2013-04-07.
- "Evolved Expendable Launch Vehicle". March 2009. Archived from the original on 2014-04-27.
- Bonnie Birckenstaedt; Bernard F. Kutter; Frank Zegler (2006). "Centaur Application to Robotic and Crewed Lunar Lander Evolution" (PDF). American Institute of Physics. p. 2. Archived from the original (PDF) on 2013-05-14.
- "Atlas V 401 – Rockets". spaceflight101.com. Retrieved 2016-04-18.
- "Launcher Fairings & Structures". RUAG Space. Retrieved May 12, 2017.
- "Gunter's Space Page – Atlas-5 (Atlas-V)". Archived from the original on 2014-04-27. Retrieved 2011-08-05.
- Honeywell awarded $52 million Atlas V contract – Military & Aerospace Electronics[full citation needed] Archived July 19, 2011, at the Wayback Machine.. Militaryaerospace.com (2001-05-01). Retrieved on 2011-11-19.
- Atlas V Launch Services User's Guide Archived 2012-06-08 at WebCite. United Launch Alliance. March 2010
- Honeywell Provides Guidance System For Atlas V Rocket. Space-travel.com. Retrieved on 2011-11-19.
- Gaskill, Braddock (2007-01-31). "Human Rated Atlas V for Bigelow Space Station details emerge". NASASpaceflight.com. Archived from the original on 2008-03-14.
- "NASA Selects United Launch Alliance for Commercial Crew Development Program". 2010-02-02. Archived from the original on 2013-12-07. Retrieved 2011-02-14.
- "CCDev awardees one year later: where are they now?". NewSpace Journal. 2011-02-13. Archived from the original on 2013-06-05. Retrieved 2011-02-05.
- Clark, Stephen (2011-02-13). "Safety system tested for Atlas and Delta rockets". Spaceflight Now. Archived from the original on 2014-04-27. Retrieved 2011-02-14.
- "NASA Begins Commercial Partnership With United Launch Alliance". NASA. 2011-07-18. Archived from the original on 2013-05-14.
- Boyle, Alan (2011-07-18). "Rocket venture to work with NASA". MSNBC Cosmic Log. Archived from the original on 2012-05-11. Retrieved 2011-07-21.
- Kelly, John (2011-08-06). "Atlas V rising to the occasion". Florida Today. Melbourne, Florida. Archived from the original on 2011-08-11. Retrieved 2011-08-10.
- "Boeing selects Atlas V Rocket for Initial Commercial Crew Launches" (Press release). Houston: Boeing. 2011-08-04. Archived from the original on 2011-08-06. Retrieved 2011-08-06.
- Malik, Tariq (2011-08-04). "Boeing Needs Space Pilots for Spaceship & Rocket Test Flights". SPACE.com. Archived from the original on 2011-08-08. Retrieved 2011-08-07.
- Jason Rhian (23 September 2015). "ULA selects Orbital ATK's GEM 63/63 XL SRBs for Atlas V and Vulcan boosters". Spaceflight Insider.
- "Atlas V" (PDF). ULA. 2010. pp. 1–4. Archived from the original (PDF) on 2012-06-08.
- Mike Gruss (19 June 2015). "Air Force Confirms ULA Position on Atlas 5 Production Rights". Space News.
- "Jonathan's Space Report Launch Vehicle Database – Atlas V". Jonathan McDowell. 2010-10-28. Archived from the original on 2013-12-11. Retrieved 2010-12-11.
- Atlas V Mission Planner's Guide – March 2010 Archived December 17, 2011, at the Wayback Machine.. (PDF) Retrieved on 2011-11-19.
- "2010 U.S. Commercial Space Transportation Developments and Concepts: Vehicles, Technologies, and Spaceports" (PDF). Federal Aviation Administration. January 2010. Archived from the original (PDF) on 2012-09-21. Retrieved 2011-11-26.
- Egan, Barbara [@barbegan13] (October 15, 2016). "We are calling the config N22. No payload fairing with the Starliner on board" (Tweet) – via Twitter.
- Krebs, Gunter. "Starliner (CST-100)". Gunter's Space Page. Retrieved May 24, 2017.
- Grush, Loren (2016-11-30). "United Launch Alliance unveils website that lets you price out a rocket 'like building a car'". The Verge. Retrieved 2016-12-01.
- "NASA Awards Launch Services Contract for Maven Mission". NASA Mars Exploration Program. 21 October 2010. Retrieved 7 May 2016.
- "ULA Frequently Asked Questions – Launch Costs". Archived from the original on 24 March 2016. Retrieved 7 May 2016.
- Northon, Karen (30 October 2015). "NASA Awards Launch Services Contract for TDRS Satellite". NASA. Retrieved 7 May 2016.
- Stephen Clark (24 November 2013). "Sizing up America's place in the global launch industry". Spaceflight Now. Archived from the original on 2013-12-03. Retrieved 25 November 2013.
- Thompson, Loren. "CEO Tory Bruno Explains How United Launch Alliance Will Stay Ahead Of Competitors". Forbes. Retrieved 2016-12-01.
- "The Great Rocket Race". Fortune. Retrieved 2016-12-01.
- William Harwood (30 November 2016). "ULA unveils 'RocketBuilder' website". Spaceflight Now. Retrieved 1 December 2016.
- "Inaugural Atlas V Scores Success for ILS, Lockheed Martin". International Launch Services. August 21, 2002. Archived from the original on 2013-07-25. Retrieved 2013-02-28.
- "ILS Launches Hellas-Sat on Atlas V". International Launch Services. May 13, 2003. Retrieved 2013-02-28.
- "ILS Launches Rainbow 1 Satellite". International Launch Services. July 17, 2003. Retrieved 2013-02-28.
- "ILS Launches AMC-16; Wraps Up Year With 10 Mission Successes". International Launch Services. December 17, 2004. Archived from the original on 2010-12-19.
- "ILS Atlas V Vehicle Lifts Massive Satellite For Inmarsat". International Launch Services. March 11, 2005. Retrieved 2013-02-28.
- "NASA's Multipurpose Mars Mission Successfully Launched". NASA. 2005-08-12. Archived from the original on 2013-05-10. Retrieved 2011-12-04.
- "NASA's Pluto Mission Launched Toward New Horizons". NASA. 2006-01-19. Archived from the original on 2014-04-27. Retrieved 2011-12-04.
- "ILS Launches ASTRA 1KR Satellite". International Launch Services. April 20, 2006. Archived from the original on 2010-12-19.
- "United Launch Alliance Successfully Launches First USAF Atlas V". United Launch Alliance. March 8, 2007.
- "Mission Status Center". Spaceflight Now. August 16, 2007. Archived from the original on 2014-02-21. Retrieved 2013-02-28.
- "NRO satellite successfully launched aboard Atlas V" (PDF). NRO. June 15, 2007. Archived from the original (PDF) on 2013-02-17. Retrieved 2013-04-18.
- "United Launch Alliance Atlas V Successfully Launches AF WGS Satellite". United Launch Alliance. October 10, 2007.
- Peterson, Patrick (September 2, 2007). "Faulty valve pushes back Atlas 5 launch". Florida Today. Archived from the original on 2012-10-25.
- "United Launch Alliance Atlas V Successfully Launches NRO Satellite". United Launch Alliance. December 10, 2007.
- "United Launch Alliance Inaugural Atlas V West Coast Launch a Success". United Launch Alliance. March 13, 2008.
- "United Launch Alliance Launches Heaviest Commercial Satellite for Atlas V". United Launch Alliance. April 14, 2008. Archived from the original on 2013-12-07.
- "United Launch Alliance Atlas V Successfully Launches AF WGS-2 Satellite". United Launch Alliance. April 3, 2009. Archived from the original on 2013-12-07.
- "United Launch Alliance Successfully Launches Moon Mission for NASA". United Launch Alliance. June 18, 2009. Archived from the original on 2013-12-07.
- "Clues about mystery payload emerge soon after launch". Spaceflight Now. September 8, 2009. Archived from the original on 2014-04-27.
- "United Launch Alliance Successfully Launches PAN Satellite". United Launch Alliance. September 8, 2009. Archived from the original on 2013-12-07.
- "United Launch Alliance 600th Atlas Mission Successfully Launches DMSP F18". United Launch Alliance. October 18, 2009. Archived from the original on 2013-12-07.
- "United Launch Alliance Launches 4th 2009 Commercial Mission: Intelsat 14". United Launch Alliance. November 23, 2009. Archived from the original on 2013-12-07.
- "United Launch Alliance Launches Solar Observatory Mission for NASA". United Launch Alliance. February 11, 2010. Archived from the original on 2013-12-07.
- "United Launch Alliance Successfully Launches OTV Mission". United Launch Alliance. April 22, 2010. Archived from the original on 2013-12-07.
- Experts weigh in on rocket debris found on Hilton Head. Wistv.com. Retrieved on 2011-11-19. Archived March 18, 2012, at the Wayback Machine.
- "United Launch Alliance Successfully Launches First AEHF Mission". United Launch Alliance. August 14, 2010. Archived from the original on 2013-12-07.
- "United Launch Alliance Successfully Launches National Defense Mission". United Launch Alliance. September 20, 2010. Archived from the original on 2013-12-07.
- "United Launch Alliance Successfully Launches Second OTV Mission". United Launch Alliance. March 5, 2011. Archived from the original on 2013-12-07.
- "ULA Successfully Launches Fifth NRO Mission in Seven Months". United Launch Alliance. April 14, 2011. Archived from the original on 2013-12-07.
- "United Launch Alliance Marks 50th Successful Launch by delivering the Space-Based Infrared System (SBIRS) Satellite to orbit for the U.S. Air Force". United Launch Alliance. May 7, 2011. Archived from the original on 2013-12-07.
- "United Launch Alliance Successfully Launches Juno Spacecraft on Five-Year Journey to study Jupiter". United Launch Alliance. August 5, 2011. Archived from the original on 2013-12-07.
- Harwood, William (2011-11-26). "Mars Science Laboratory begins cruise to red planet". Spaceflight Now Inc. Archived from the original on 2014-04-27. Retrieved 2011-12-04.
- "Challenge of Getting to Mars". Chapter 4: Launching Curiosity. JPL.
- Rik Myslewski (2011-11-26). "US Martian nuke-truck launches without a hitch, but..." Archived from the original on 2012-05-27.
- "United Launch Alliance Atlas V Rocket, with 200th Centaur, Successfully Launches Mobile User Objective System-1 Mission". United Launch Alliance. February 24, 2012. Archived from the original on 2013-12-07.
- Justin Ray (February 9, 2012). "Landmark launch in rocketry: Centaur set for Flight 200". Spaceflight Now. Archived from the original on 2014-04-27.
- :::: United Launch Alliance, LLC :::: Archived December 7, 2013, at the Wayback Machine.
- Spaceflight Now | Atlas Launch Report | Mission Status Center Archived December 20, 2013, at the Wayback Machine.
- :::: United Launch Alliance, LLC :::: Archived December 7, 2013, at the Wayback Machine.
- Graham, William (13 September 2012). "ULA Atlas V finally launches with NROL-36". NASASpaceFlight.com (Not affiliated with NASA). Archived from the original on 2013-12-16. Retrieved 2012-09-14.
- "United Launch Alliance Successfully Launches Third X-37B Orbital Test Vehicle for the Air Force". United Launch Alliance. December 11, 2012. Archived from the original on 2013-12-07.
- "United Launch Alliance Successfully Launches NASA's Tracking and Data Relay Satellite". United Launch Alliance. January 31, 2013. Archived from the original on 2013-12-07.
- Justin Ray. "Atlas 5 rocket launch continues legacy of Landsat". Spaceflight Now. Archived from the original on 2014-04-21. Retrieved 2013-02-11.
- "United Launch Alliance Successfully Launches Second Space-Based Infrared System SBIRS Satellite to Orbit for the U.S. Air Force". United Launch Alliance. Archived from the original on 2013-12-07. Retrieved 2013-03-20.
- "ULA Launches 70th Successful Mission in 77 Months with the Launch of the GPS IIF-4 Satellite for the Air Force". United Launch Alliance. Archived from the original on 2013-12-07. Retrieved 2013-05-15.
- "United Launch Alliance Atlas V Rocket Successfully Launches Mobile User Objective System-2 Mission for U.S. Navy". United Launch Alliance. Archived from the original on 2013-12-07. Retrieved 2013-07-19.
- "United Launch Alliance Marks 75th Successful Launch by Delivering the Advanced Extremely High Frequency-3 Satellite to Orbit for the U.S. Air Force". United Launch Alliance. Archived from the original on 2013-12-07. Retrieved 2013-09-18.
- "United Launch Alliance Atlas V Rocket Successfully Launches MAVEN mission on Journey to the Red Planet". United Launch Alliance. Archived from the original on 2013-12-07. Retrieved 2013-11-19.
- "United Launch Alliance Atlas V Rocket Successfully Launches Payload for the National Reconnaissance Office". United Launch Alliance. Archived from the original on 2013-12-07. Retrieved 2013-12-06.
- "United Launch Alliance successfully launches NASA's Tracking and Data Relay Satellite payload". United Launch Alliance. January 23, 2014. Archived from the original on 2013-12-07.
- "United Launch Alliance Marks 80th Successful Launch by Delivering Air Force's Weather Satellite to Orbit". United Launch Alliance. April 3, 2014. Archived from the original on 2013-12-07.
- "United Launch Alliance Successfully Launches Second Mission in Just Seven Days". United Launch Alliance. Archived from the original on 2013-12-07. Retrieved 2014-04-11.
- "United Launch Alliance Successfully Launches Four Missions in Just Seven Weeks". United Launch Alliance. Archived from the original on 2014-05-22. Retrieved 2014-05-22.
- "United Launch Alliance Successfully Launches Two Rockets in Just Four Days". United Launch Alliance. Retrieved 2014-08-03.
- "United Launch Alliance Atlas V Launches WorldView-3 Satellite for DigitalGlobe". United Launch Alliance. Retrieved 2014-08-13.
- William Graham (September 17, 2014). "ULA Atlas V successfully launches secretive CLIO mission". NASASpaceflight.com.
- "United Launch Alliance Launches Its 60th Mission from Cape Canaveral". United Launch Alliance. September 17, 2014.
- "United Launch Alliance Successfully Launches 50th Atlas V Rocket". United Launch Alliance. October 29, 2014.
- "United Launch Alliance Atlas V Successfully Launches Payload for the National Reconnaissance Office". United Launch Alliance. Retrieved 2014-12-13.
- "United Launch Alliance Successfully Launches the U.S. Navy's Mobile User Objective System-3". United Launch Alliance. Retrieved 2015-01-21.
- "United Launch Alliance Successfully Launches Solar Probes to Study Space Weather for NASA". United Launch Alliance. Retrieved 2015-03-15.
- "United Launch Alliance Successfully Launches X-37B Orbital Test Vehicle for the U.S. Air Force". United Launch Alliance. Retrieved 2015-05-21.
- "United Launch Alliance Successfully Launches Global Positioning Satellite for the U.S. Air Force". United Launch Alliance. July 15, 2015.
- "United Launch Alliance Successfully Launches the U.S. Navy's Mobile User Objective System-4". United Launch Alliance. September 2, 2015.
- "United Launch Alliance Reaches 100 Successful Missions with Morelos-3 Satellite". United Launch Alliance. October 2, 2015.
- "United Launch Alliance Successfully Launches Payload for the National Reconnaissance Office". United Launch Alliance. 8 October 2015. Retrieved 8 October 2015.
- "United Launch Alliance Successfully Launches GPS IIF-11 Satellite for U.S. Air Force". United Launch Alliance. 31 October 2015. Retrieved 1 November 2015.
- "United Launch Alliance Successfully Launches OA-4 Cygnus to International Space Station". United Launch Alliance. 6 December 2015. Retrieved 6 December 2015.
- "United Launch Alliance Successfully Launches GPS IIF-12 Satellite for U.S. Air Force". United Launch Alliance. 5 February 2016. Retrieved 5 February 2016.
- "United Launch Alliance Successfully Launches 7,745 Pounds of Cargo to International Space Station". United Launch Alliance. 22 March 2016. Retrieved 28 March 2016.
- "United Launch Alliance Successfully Launches MUOS-5 Satellite for the U.S Air Force and U.S. Navy". United Launch Alliance. 24 June 2016. Retrieved 9 August 2016.
- "United Launch Alliance Successfully Launches NROL-61 Payload for the National Reconnaissance Office". United Launch Alliance. July 28, 2016.
- "United Launch Alliance Successfully Launches OSIRIS-REx Spacecraft for NASA". United Launch Alliance. 8 September 2016. Retrieved 10 September 2016.
- "United Launch Alliance Successfully Launches WorldView-4 for DigitalGlobe". United Launch Alliance. 11 November 2016. Retrieved 11 November 2016.
- "United Launch Alliance Successfully Launches GOES-R Satellite for NASA and NOAA". United Launch Alliance. 19 November 2016. Retrieved 20 November 2016.
- "United Launch Alliance Successfully Launches EchoStar XIX Satellite". United Launch Alliance. 18 December 2016. Retrieved 23 December 2016.
- "United Launch Alliance Successfully Launches SBIRS GEO Flight 3 Satellite to Orbit for U.S. Air Force". United Launch Alliance. 20 January 2017. Retrieved 21 January 2017.
- "United Launch Alliance Successfully Launches NROL-79 Payload for the National Reconnaissance Office". Ulalaunch.com. Retrieved 2017-08-11.
- Klotz, Irene (18 April 2017). "Atlas V Rocket Launches Private Cygnus Cargo Ship to Space Station". Space.com. Retrieved 18 April 2017.
- "United Launch Alliance Successfully Launches NASA's TDRS-M Satellite". Ulalaunch.com. Retrieved 18 August 2017.
- "United+Launch+Alliance+Successfully+Launches+NROL-42+Mission+for+the+National+Reconnaissance+Office". United Launch Alliance. 24 September 2017. Retrieved 24 September 2017.
- Graham, William (October 15, 2017). "Atlas V finally launches with NROL-52". NASASpaceFlight.com. Retrieved October 15, 2017.
- "United Launch Alliance Successfully Launches SBIRS GEO Flight 4 Mission for the U.S. Air Force". United Launch Alliance. January 20, 2018. Archived from the original on 2018-01-20. Retrieved January 20, 2018.
- "United Launch Alliance Successfully Launches GOES-S Weather Satellite for NASA and NOAA". United Launch Alliance. March 1, 2018. Retrieved March 1, 2018.
- "United Launch Alliance Successfully Launches AFSPC-11 Mission for the U.S. Air Force". United Launch Alliance. 15 April 2018. Retrieved 15 April 2018.
- "United Launch Alliance Successfully Launches West Coast's First Interplanetary Mission for NASA". United Launch Alliance. 5 May 2018. Retrieved 5 May 2018.
- "United Launch Alliance Successfully Launches AEHF-4 Mission". United Launch Alliance. 17 October 2018. Retrieved 17 October 2018.
- Ray, Justin. "Atlas 5 rocket sends Cygnus in hot pursuit of space station | Spaceflight Now". Retrieved 2015-12-07.
- "About Us". Af.mil. Retrieved 11 August 2017.
- Fahey, Mark (2016-09-01). "When a rocket blows up, space insurers pay for it". Cnbc.com. Retrieved 2016-12-07.
- "Air Force Issues Second Update Regarding Atlas V Centaur Upper Stage Anomaly Review". U.S. Air Force. 2 July 2007. Archived from the original on 2014-02-23.
- "NRO satellite successfully launched aboard Atlas V" (PDF) (Press release). NRO. June 15, 2007. Archived from the original (PDF) on 2013-02-17.
- "NROL-30 launch update" (PDF) (Press release). NRO. June 18, 2007. Archived from the original (PDF) on 2013-02-17.
- "Atlas 5 forced to improvise during Tuesday's climb to orbit" (Press release). SpaceflightNow. March 24, 2016.
- Ray, Justin. "New lineup spelled out for upcoming Atlas 5 rocket launches from the Cape – Spaceflight Now". Retrieved 2016-05-07.
- Ferster, Warren (2014-09-17). "ULA To Invest in Blue Origin Engine as RD-180 Replacement". Space News. Retrieved 2014-09-19.
- Amy Butler (15 April 2015). "ULA CEO Calls 2018 Availability Date For AR1 Engine 'Ridiculous'". Aviation Week.
- Mike Gruss (12 May 2015). "Aerojet on Team Seeking Atlas 5 Production Rights". Space News.
- United Launch Alliance. "Atlas V Product Card". Archived from the original on 2014-03-30.
- National Security Space Launch Report (PDF). RAND Corporation. 2006. p. 29. Archived from the original (PDF) on 2012-10-23.
- National Security Space Launch Report (PDF). RAND Corporation. 2006. p. xxi. Archived from the original (PDF) on 2012-10-23.
- HSF Final Report: Seeking a Human Spaceflight Program Worthy of a Great Nation, October 2009, Review of U.S. Human Spaceflight Plans Committee, graphic on p. 64, retrieved 2011-02-07.
- "GX Launch Vehicle" (PDF). United Launch Alliance. Retrieved 2009-05-07.[dead link]
- "Japan scraps GX rocket development project". iStockAnalyst. 2009-12-16. Archived from the original on 2014-03-06. Retrieved 2009-12-16.
- Mike Gruss (13 April 2015). "ULA's Next Rocket To Be Named Vulcan". Space News.
- Mike Gruss (13 April 2015). "ULA's Vulcan Rocket To be Rolled out in Stages". Space News.
- Butler, Amy (11 May 2015). "Industry Team Hopes To Resurrect Atlas V Post RD-180". Aviation Week & Space Technology. Archived from the original on 12 May 2015. Retrieved 12 May 2015.