The Vehicle Assembly Building (originally the Vertical Assembly Building), or VAB, is a large building at

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, succeeding t ...

Kennedy Space Center The John F. Kennedy Space Center (KSC, originally known as the NASA Launch Operations Center), located on Merritt Island, Florida, is one of the National Aeronautics and Space Administration's (NASA) ten field centers. Since December 1968 ...

(KSC), designed to assemble large pre-manufactured space vehicle components, such as the massive

Saturn V Saturn V is a retired American super heavy-lift launch vehicle developed by NASA under the Apollo program for human exploration of the Moon. The rocket was human-rated, with multistage rocket, three stages, and powered with liquid-propellant r ...

and the

Space Shuttle The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program na ...

, and

stack Stack may refer to: Places * Stack Island, an island game reserve in Bass Strait, south-eastern Australia, in Tasmania’s Hunter Island Group * Blue Stack Mountains, in Co. Donegal, Ireland People * Stack (surname) (including a list of people ...

them vertically onto one of three

mobile launcher platform A mobile launcher platform (MLP), also known as mobile launch platform, is a structure used to support a large multistage space vehicle which is assembled (stacked) vertically in an integration facility (e.g. the Vehicle Assembly Building) and t ...

s used by NASA. As of March 2022, the first

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 r ...

(SLS) rocket was assembled inside in preparation for the

Artemis 1 Artemis 1, officially Artemis I and formerly Exploration Mission-1 (EM-1), was an uncrewed Moon-orbiting mission. As the first major spaceflight of NASA's Artemis program, Artemis 1 marked the return of the agency to lunar exploration original ...

mission, which launched on November 16, 2022. At , it is the eighth-largest building in the world by volume as of 2022. The building is at

Launch Complex 39 Launch Complex 39 (LC-39) is a rocket launch site at the John F. Kennedy Space Center on Merritt Island in Florida, United States. The site and its collection of facilities were originally built as the Apollo program's "Moonport" and later mo ...

at KSC, south of

Jacksonville Jacksonville is a city located on the Atlantic coast of northeast Florida, the most populous city proper in the state and is the List of United States cities by area, largest city by area in the contiguous United States as of 2020. It is the co ...

, north of

Miami Miami ( ), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a East Coast of the United States, coastal metropolis and the County seat, county seat of Miami-Dade County, Florida, Miami-Dade C ...

, and due east of

Orlando Orlando () is a city in the U.S. state of Florida and is the county seat of Orange County. In Central Florida, it is the center of the Orlando metropolitan area, which had a population of 2,509,831, according to U.S. Census Bureau figures rele ...

, on

Merritt Island Merritt Island is a peninsula, commonly referred to as an island, in Brevard County, Florida, United States, located on the eastern Floridian coast, along the Atlantic Ocean. It is also the name of an unincorporated town in the central and sout ...

on the

Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...

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Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

. The VAB is the largest single-story building in the world, was the tallest building () in Florida until 1974, and is the tallest building in the United States outside an urban area.

History

The VAB, which was completed in 1966, was originally built for the vertical assembly of the

Apollo Apollo, grc, Ἀπόλλωνος, Apóllōnos, label=genitive , ; , grc-dor, Ἀπέλλων, Apéllōn, ; grc, Ἀπείλων, Apeílōn, label=Arcadocypriot Greek, ; grc-aeo, Ἄπλουν, Áploun, la, Apollō, la, Apollinis, label= ...

–

space vehicle A space vehicle is the combination of a spacecraft and its launch vehicle which carries it into space. The earliest space vehicles were expendable launch systems, using a single or multistage rocket to carry a relatively small spacecraft in p ...

and was referred to as the ''Vertical Assembly Building''. In anticipation of post-Apollo projects such as the

program, it was renamed the Vehicle Assembly Building on February 3, 1965. It was subsequently used to mate the Space Shuttle

orbiter A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, pl ...

s to their external fuel tanks and

solid rocket booster A solid rocket booster (SRB) is a large solid propellant motor used to provide thrust in spacecraft launches from initial launch through the first ascent. Many launch vehicles, including the Atlas V, SLS and space shuttle, have used SRBs to give ...

s. Once the complete space vehicle was assembled on a

, a

crawler-transporter The crawler-transporters, formally known as the Missile Crawler Transporter Facilities, are a pair of tracked vehicles used to transport spacecraft from NASA's Vehicle Assembly Building (VAB) along the Crawlerway to Launch Complex 39. They were ...

moved it to Launch Complex-39A or 39B. Sometime prior to the destruction of in 2003, NASA installed a sub-roof inside the VAB to deal with falling concrete debris as a result of the building's age. The VAB was designated as a

National Historic Civil Engineering Landmark __NOTOC__ The following is a list of Historic Civil Engineering Landmarks as designated by the American Society of Civil Engineers since it began the program in 1964. The designation is granted to projects, structures, and sites in the United State ...

by the

American Society of Civil Engineers American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...

in 2020.

Construction

In 1963, NASA contracted Urbahn Architects to design and build the VAB. Construction began with driving the first steel foundation piles on Aug. 2, 1963. It was part of NASA's massive effort to send astronauts to the Moon for the Apollo program. Altogether, 4,225 pilings were driven down 164 feet to bedrock with a foundation consisting of of concrete. Construction of the VAB required of steel. The building was completed in 1966. The VAB is tall, long and wide. It covers , and encloses of space. Located on Florida's Atlantic coast, the building was constructed to withstand

hurricane A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depend ...

s and

tropical storm A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depend ...

s. Despite this, it has received damage from several hurricanes (see

below Below may refer to: *Earth *Ground (disambiguation) *Soil *Floor *Bottom (disambiguation) Bottom may refer to: Anatomy and sex * Bottom (BDSM), the partner in a BDSM who takes the passive, receiving, or obedient role, to that of the top or ...

Capabilities

There are four entries to the bays located inside the building, which are the four largest doors in the world. Each door is high, has seven vertical panels and four horizontal panels, and takes 45 minutes to completely open or close. The north entry that leads to the transfer aisle was widened by to allow entry of the shuttle orbiter. A central slot at the north entry allowed for passage of the orbiter's vertical stabilizer. To lift the components of the Space Shuttle, the VAB housed five overhead bridge cranes, including two capable of lifting 325 tons, and 136 other lifting devices. The building has

air conditioning Air conditioning, often abbreviated as A/C or AC, is the process of removing heat from an enclosed space to achieve a more comfortable interior environment (sometimes referred to as 'comfort cooling') and in some cases also strictly controlling ...

equipment, including 125 ventilators on the roof supported by four large air handlers (four cylindrical structures west of the building) rated at a total 10,000 tons of refrigeration (120,000,000

BTU The British thermal unit (BTU or Btu) is a unit of heat; it is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. It is also part of the United States customary units. The modern SI u ...

/ hr, 35 MW) to keep moisture under control. Air in the building can be completely replaced every hour. The large doors can allow fog to roll into the building and become trapped, leading to incorrect rumors that the building has its own

weather Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy. On Earth, most weather phenomena occur in the lowest layer of the planet's atmosphere, the ...

and can form clouds.

Exterior

The

American flag The national flag of the United States of America, often referred to as the ''American flag'' or the ''U.S. flag'', consists of thirteen equal horizontal stripes of red (top and bottom) alternating with white, with a blue rectangle in the c ...

painted on the building was the largest in the world when added in 1976 as part of

United States Bicentennial The United States Bicentennial was a series of celebrations and observances during the mid-1970s that paid tribute to historical events leading up to the creation of the United States of America as an independent republic. It was a central event ...

celebrations, along with the star logo of the anniversary, later replaced by the

NASA insignia The National Aeronautics and Space Administration (NASA) insignia has three main official designs, although the one with stylized red curved text (the "worm") was retired from official use from May 22, 1992, until April 3, 2020, when it was reinst ...

in 1998. It is high and wide. Each of the stars on the flag is across, the blue field is the size of a regulation basketball court, and each of the stripes is wide. Work began in early 2007 to restore the exterior paint on the immense facility. Special attention was paid to the enormous American flag and NASA "meatball" insignia. The work repaired visible damage from years of storms and weathering. The flag and logo had been previously repainted in 1998 for NASA's 40th anniversary. Vehicle_Assembly_Building_damage_from_Hurricane_Frances_night_view

Vehicle_Assembly_Building_damage_from_Hurricane_Frances_night_view

The most extensive exterior damage occurred during the storm season of 2004, when

Hurricane Frances Hurricane Frances was the second most intense tropical cyclone in the Atlantic during 2004 and proved to be very destructive in Florida. It was the sixth named storm, the fourth hurricane, and the third major hurricane of the 2004 Atlantic hu ...

blew off 850

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 has ...

panels from the building, resulting in about of new openings in the sides. Twenty-five additional panels were blown off the east side by the winds from

Hurricane Jeanne Hurricane Jeanne was a Saffir–Simpson scale, Category 3 hurricane that struck the Caribbean and the Eastern United States in September 2004. It was the deadliest hurricane in the Atlantic basin since Hurricane Mitch, Mitch in 1998 Atlantic hur ...

just three weeks later. Earlier in the season,

Hurricane Charley Hurricane Charley was the first of four separate hurricanes to impact or strike Florida during 2004, along with Hurricane Frances, Frances, Hurricane Ivan, Ivan and Hurricane Jeanne, Jeanne, as well as one of the strongest hurricanes ever to ...

caused significant but less serious damage, estimated to cost $700,000. Damage caused by these hurricanes was still visible in 2007. Some of these panels are "punch-outs", designed to detach from the VAB when a large pressure differential is created on the outside vs. the inside. This allows for equalization, and helps protect the structural integrity of the building during rapid changes in pressure such as in tropical cyclones. The building has been used as a backdrop in several Hollywood movies including ''

Marooned Marooned may refer to: * Marooning, the intentional act of abandoning someone in an uninhabited area Film and television * ''Marooned'' (1933 film), a British drama film * ''Marooned'' (1969 film), an American science-fiction film * ''Marooned ...

'', ''

SpaceCamp ''SpaceCamp'' is a 1986 American science fiction adventure film inspired by the U.S. Space Camp in Huntsville, Alabama. Directed by Harry Winer, story by Patrick Bailey and Larry B. Williams, screenplay by Clifford Green (as W. W. Wicket) and Ca ...

'', ''

Apollo 13 Apollo 13 (April 1117, 1970) was the seventh crewed mission in the Apollo space program and the third meant to land on the Moon. The craft was launched from Kennedy Space Center on April 11, 1970, but the lunar landing was aborted aft ...

'', ''

Contact Contact may refer to: Interaction Physical interaction * Contact (geology), a common geological feature * Contact lens or contact, a lens placed on the eye * Contact sport, a sport in which players make contact with other players or objects * ...

'', and others.

Future

The Space Shuttle was retired in 2011 after which NASA temporarily (as early as 2012) offered public tours of the VAB. These tours were temporarily discontinued in February 2014 to allow for renovations to take place. The NASA FY2013 budget included US$143.7 million for Construction of Facilities (CoF) requirements in support of what is now known as the

Artemis program The Artemis program is a robotic and human Moon exploration program led by the United States' National Aeronautics and Space Administration (NASA) along with three partner agencies: European Space Agency (ESA), Japan Aerospace Exploration ...

and its vehicles, including the

(SLS) and

Orion spacecraft Orion (officially Orion Multi-Purpose Crew Vehicle or Orion MPCV) is a Reusable spacecraft, partially reusable crewed spacecraft used in NASA's Artemis program. The spacecraft consists of a Crew Module (CM) space capsule designed by Lockheed ...

. NASA began modifying Launch Complex 39 at KSC to support the new SLS in 2014, beginning with major repairs, code upgrades and safety improvements to the Launch Control Center, Vehicle Assembly Building (VAB) and the VAB Utility Annex. This initial work will be required to support any launch vehicle operated from Launch Complex 39 and will allow NASA to begin modernizing the facilities, while vehicle-specific requirements are being developed. The VAB could be used to some extent for assembly and processing of any future vehicles utilizing Launch Complex 39, in addition to renovations for SLS capabilities. On June 16, 2015, NASA released an announcement for proposals (AFP) seeking interest in using the VAB High Bay 2 and other complex facilities for commercial use in "assembling, integration, and testing of launch vehicles". This move is in line with the intent to migrate KSC towards acting as a spaceport accessible to both government and commercial ventures. On April 21, 2016, NASA announced the selection of

Orbital ATK Northrop Grumman Innovation Systems (NGIS) was a sector (business segment) of Northrop Grumman from 2018 through 2019. It was formed from Orbital ATK Inc. a company which resulted from the merger of Orbital Sciences Corporation and parts of Alli ...

(bought by

Northrop Grumman Northrop Grumman Corporation is an American multinational aerospace and defense technology company. With 90,000 employees and an annual revenue in excess of $30 billion, it is one of the world's largest weapons manufacturers and military techn ...

as of 2019) to begin negotiations for High Bay 2. The "potential agreement" included an existing mobile launcher platform. NASA subsequently completed the agreement in August 2019 to lease High Bay 2 and

Mobile Launcher Platform A mobile launcher platform (MLP), also known as mobile launch platform, is a structure used to support a large multistage space vehicle which is assembled (stacked) vertically in an integration facility (e.g. the Vehicle Assembly Building) and t ...

3 to Northrop Grumman for use with their

OmegA Omega (; capital: Ω, lowercase: ω; Ancient Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the twenty-fourth and final letter in the Greek alphabet. In the Greek numeric system/isopsephy (gematria), it has a value of 800. The wo ...

launch vehicle. However, development of OmegA was subsequently cancelled in September 2020. Northrop Grumman had yet to make any modifications to High Bay 2, and were using it for the storage of OmegA hardware. This hardware was scheduled to be removed from the VAB and returned to Northrop Grumman by the end of September 2020.

Gallery

File:VAB_exterior_and_LCC.jpg, Aerial view of the Vehicle Assembly Building at

in 2011 File:2019VAB.jpg, The VAB in 2019 File:Aerial View of Launch Complex 39.jpg, Overview of the VAB and LCC industrial area File:VAB transfer aisle.jpg, '' Endeavour'' on its way into the VAB during the launch preparations for

STS-89 STS-89 was a Space Shuttle mission to the ''Mir'' space station flown by Space Shuttle Space Shuttle Endeavour, '' Endeavour'', and launched from Kennedy Space Center, Florida on 22 January 1998. Crew Crew notes STS-89 was originally schedule ...

. At the top of the doorway is the slot for the vertical stabilizer. File:VAB Exterior Photos (KSC-20220119-PH-CSH01 0011).jpg, The VAB as viewed from the nearby parking lot, 19 January 2022 File:Artemis 1 First Rollout (KSC-20220317-PH-KLS03 0077).jpg,

rollout out of the VAB, 17 March 2022 File:VAB Beside the Artemis 1 lauching off in OBZ II PTZ Cam.jpg, VAB Beside the

SLS Block 1 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 r ...

during the Launch, 16 November 2022

References

External links

*
Vehicle Assembly Building, High Bay and Low Bay
a
Florida's Office of Cultural and Historical Programs

{{Artemis program Apollo program Artemis program Buildings and structures in Merritt Island, Florida Kennedy Space Center National Register of Historic Places in Brevard County, Florida Space Shuttle program Buildings and structures completed in 1966 Cubic buildings 1966 establishments in Florida Integration facilities Historic Civil Engineering Landmarks