Cape Canaveral Air Force Station Launch Complex 12

Last updated
Launch Complex 12
Atlas rocket with Project Fire 1 at Gantry pull back.jpg
Atlas D with FIRE 1 at LC-12
Launch site Cape Canaveral Air Force Station
Location 28°28′49″N80°32′31″W / 28.48028°N 80.54194°W / 28.48028; -80.54194 Coordinates: 28°28′49″N80°32′31″W / 28.48028°N 80.54194°W / 28.48028; -80.54194
Short nameLC-12
Operator US Air Force
Total launches38
Launch pad(s)One
Launch history
StatusDismantled
First launchAtlas A 10A
10 January 1958
Last launchAtlas-Agena D 5103
5 November 1967
Associated
rockets
Atlas A
Atlas C
Atlas D
Atlas-Able
Atlas-Agena

Launch Complex 12 (LC-12) at Cape Canaveral Air Force Station, Florida was a launch pad used by Atlas rockets and missiles between 1958 and 1967. It was the second-most southern of the pads known as Missile Row, between LC-11 to the south and LC-13 to the north. Along with Complexes 11, 13 and 14, 12 featured a more robust design than many contemporary pads, due to the greater power of the Atlas compared to other rockets of the time. It was larger, and featured a concrete launch pedestal that was 6 metres (20 ft) tall and a reinforced blockhouse. The rockets were delivered to the launch pad by means of a ramp on the southwest side of the launch pedestal.

Atlas A, C and D missiles were tested from the site. It was also used for orbital launches of Atlas-Able and later Atlas-Agena rockets, and two Project FIRE suborbital tests for Project Apollo, using Atlas D rockets.

LC-12's first launch was Atlas 10A on January 10, 1958. During the second half of the year, a larger umbilical service tower was built in preparation for the C series Atlas tests, flown from December 1958 to August 1959.

On 24 September 1959, the first Atlas-Able, 9C, exploded during a static firing test at LC-12, after a turbopump on one of the engines failed to trigger a complete engine shutdown. The damaged turbopump continued to allow oxidizer to flow, feeding the fire beneath the vehicle. About a minute later the rocket suffered a structural failure, collapsed and exploded. The entire service tower and both umbilical towers were knocked over and the concrete launch stand caved in. Because damage to LC-12 was so extensive, it did not host another launch until Missile 56D in May 1960. The large service tower was not rebuilt following the explosion of Atlas 9C. It then hosted more ICBM tests along with the second and third Atlas Able probes.

In 1961, LC-12 was converted to support the Atlas-Agena rocket. The first Atlas-Agena launch from LC-12 was in August 1961. On 23 April 1962, Atlas-Agena B 133D launched Ranger 4, the first American spacecraft to reach the surface of the Moon, when it made a hard landing at an impact speed of 9,617 kilometres per hour (5,976 mph).

On 27 August 1962, Mariner 2 was launched by Atlas-Agena B 179D, the first spacecraft conduct a successful flyby of another planet when it flew past Venus on 14 December 1962. On 28 July 1964, Atlas-Agena B 250D launched Ranger 7, which was the first fully successful Ranger mission. On 28 November 1964, Atlas-Agena D 288D launched with Mariner 4, which provided the first close-up pictures of Mars.

In 1967, LC-12 became the third of the four Atlas pads to be deactivated. Following deactivation, the launch tower, mobile service structure and launch support equipment were dismantled, and the site is no longer maintained.

Related Research Articles

Mariner 3

Mariner 3 was one of two identical deep-space probes designed and built by the Jet Propulsion Laboratory (JPL) for NASA's Mariner-Mars 1964 project that were intended to conduct close-up (flyby) scientific observations of the planet Mars and transmit information on interplanetary space and the space surrounding Mars, televised images of the Martian surface and radio occultation data of spacecraft signals as affected by the Martian atmosphere back to Earth. It was the third of ten spacecraft within the Mariner program.

Ranger 3 US unmanned spaceprobe

Ranger 3 was a space exploration mission conducted by NASA to study the Moon. The Ranger 3 robotic spacecraft was launched January 26, 1962 as part of the Ranger program. Due to a series of malfunctions, the spacecraft missed the Moon by 22,000 mi (35,000 km) and entered a heliocentric orbit.

Ranger 5 US unmanned spaceprobe

Ranger 5 was a spacecraft of the Ranger program designed to transmit pictures of the lunar surface to Earth stations during a period of 10 minutes of flight prior to impacting on the Moon, to rough-land a seismometer capsule on the Moon, to collect gamma-ray data in flight, to study radar reflectivity of the lunar surface, and to continue testing of the Ranger program for development of lunar and interplanetary spacecraft. Due to an unknown malfunction, the spacecraft ran out of power and ceased operation. It passed within 725 km of the Moon.

RM-81 Agena American rocket upper stage and satellite support bus

The RM-81 Agena was an American rocket upper stage and satellite bus which was developed by Lockheed initially for the canceled WS-117L reconnaissance satellite program. Following the split-up of WS-117L into SAMOS and Corona for image intelligence, and MIDAS for early warning, the Agena was later used as an upper stage, and an integrated component, for several programs, including Corona reconnaissance satellites and the Agena Target Vehicle used to demonstrate rendezvous and docking during Project Gemini. It was used as an upper stage on the Atlas, Thor, Thorad and Titan IIIB rockets, and considered for others including the Space Shuttle and Atlas V. A total of 365 Agena rockets were launched between February 28, 1959 and February 1987. Only 33 Agenas carried NASA payloads and the vast majority were for DoD programs.

Cape Canaveral Air Force Station US Air Force station near Cocoa Beach, Florida, United States

Cape Canaveral Air Force Station (CCAFS) is an installation of the United States Air Force Space Command's 45th Space Wing.

PGM-17 Thor first operational ballistic missile deployed by the U.S. Air Force

The PGM-17A Thor was the first operational ballistic missile of the U.S. Air Force (USAF). Named after the Norse god of thunder, it was deployed in the United Kingdom between 1959 and September 1963 as an intermediate-range ballistic missile (IRBM) with thermonuclear warheads. Thor was 65 feet (20 m) in height and 8 feet (2.4 m) in diameter. It was later augmented in the U.S. IRBM arsenal by the Jupiter.

Ranger 7 First space probe of the United States to successfully transmit close images of the lunar surface back to Earth

Ranger 7 was the first space probe of the United States to successfully transmit close images of the lunar surface back to Earth. It was also the first completely successful flight of the Ranger program. Launched on July 28, 1964, Ranger 7 was designed to achieve a lunar-impact trajectory and to transmit high-resolution photographs of the lunar surface during the final minutes of flight up to impact.

Thor-Able American expendable launch system and sounding rocket used for a series of re-entry vehicle tests and satellite launches between 1958 and 1960

The Thor-Able was an American expendable launch system and sounding rocket used for a series of re-entry vehicle tests and satellite launches between 1958 and 1960. It was a two stage rocket, consisting of a Thor IRBM as a first stage and a Vanguard-derived Able second stage. On some flights, an Altair solid rocket motor was added as a third stage. It was a member of the Thor family and an early predecessor of the Delta.

Atlas-Centaur

The Atlas-Centaur was a US expendable launch vehicle derived from the SM-65 Atlas D missile. Launches were conducted from Launch Complex 36 at the Cape Canaveral Air Force Station in Florida.

Vandenberg Air Force Base Space Launch Complex 3 launch site at Vandenberg Air Force Base in California

Space Launch Complex 3 (SLC-3) is a launch site at Vandenberg Air Force Base that consists of two separate launch pads. SLC-3E (East) is currently used by the Atlas V launch vehicle, while SLC-3W (West) has been demolished.

Atlas-Agena expendable launch system

The Atlas-Agena was an American expendable launch system derived from the SM-65 Atlas missile. It was a member of the Atlas family of rockets, and was launched 109 times between 1960 and 1978. It was used to launch the first five Mariner uncrewed probes to the planets Venus and Mars, and the Ranger and Lunar Orbiter uncrewed probes to the Moon. The upper stage was also used as an uncrewed orbital target vehicle for the Gemini crewed spacecraft to practice rendezvous and docking. However, the launch vehicle family was originally developed for the Air Force and most of its launches were classified DoD payloads.

Atlas (rocket family) Family of American missiles and space launch vehicles

Atlas is a family of US missiles and space launch vehicles that originated with the SM-65 Atlas. The Atlas intercontinental ballistic missile (ICBM) program was initiated in the late 1950s under the Convair Division of General Dynamics. Atlas was a liquid propellant rocket burning RP-1 fuel with liquid oxygen in three engines configured in an unusual "stage-and-a-half" or "parallel staging" design: two outboard booster engines were jettisoned along with supporting structures during ascent, while the center sustainer engine, propellant tanks and other structural elements remained connected through propellant depletion and engine shutdown.

Thor (rocket family) American rocket family

Thor was a US space launch vehicle derived from the PGM-17 Thor intermediate-range ballistic missile. The Thor rocket was the first member of the Delta rocket family of space launch vehicles. The last launch of a direct derivative of the Thor missile occurred in 2018 as the first stage of the final Delta II.

SM-65A Atlas First full-scale prototype of the Atlas missile

The Convair SM-65A Atlas, or Atlas A was the first full-scale prototype of the Atlas missile, which first flew on 11 June 1957. Unlike later versions of the Atlas missile, the Atlas A did not feature the stage and a half design. Instead, the booster engines were fixed in place, and the sustainer engine was omitted. The propulsion system used on the initial Atlas As was an early version of the Rocketdyne MA-1 engines with conical thrust chambers that produced a mere 135,000 pounds of thrust, compared with the 360,000 pounds of the fully operational Atlas D. Several pieces of hardware found on the operational Atlas were either missing on the A-series or only partially implemented. Powered flight on the A-series would last about two minutes and compared to later Atlases, long pad hold-down times, with up to 11 seconds between engine start and launcher release.

SM-65C Atlas Missile

The SM-65C Atlas, or Atlas C was a prototype of the Atlas missile. First flown on 24 December 1958, the Atlas C was the final development version of the Atlas rocket, prior to the operational Atlas D. It was originally planned to be used as the first stage of the Atlas-Able rocket, but following an explosion during a static test on 24 September 1959, this was abandoned in favor of the Atlas D. Atlas C was similar to Atlas B, but had a larger LOX tank and smaller RP-1 tank due to technical changes to the Rocketdyne engines. Improvements in materials and manufacturing processes also resulted in lighter-weight components than the Atlas A and B. Booster burn time was much longer than the A/B series, up to 151 seconds. All launches took place from LC-12 at CCAS.

SM-65D Atlas first operational version of the U.S. Atlas missile

The SM-65D Atlas, or Atlas D, was the first operational version of the U.S. Atlas missile. Atlas D was first used as an intercontinental ballistic missile (ICBM) to deliver a nuclear weapon payload on a suborbital trajectory. It was later developed as a launch vehicle to carry a payload to low Earth orbit on its own, and later to geosynchronous orbit, to the Moon, Venus, or Mars with the Agena or Centaur upper stage.

SM-65F Atlas

The SM-65F Atlas, or Atlas-F, was the final operational variant of the Atlas missile, only differing from the Atlas E in the launch facility and guidance package used. It first flew on 8 August 1961, and was deployed as an operational ICBM between 1961 and 1966. Following retirement as an ICBM, the Atlas-F, along with the Atlas-E, was refurbished for orbital launches as the Atlas E/F.

Vandenberg AFB Launch Complex 576 military facility

Launch Complex 576 is a group of rocket launch pads at Vandenberg Air Force Base. The pads were used from 1959 until 1971 to launch SM-65 Atlas missiles. The site was also known as Complex ABRES. Pads in Area 576 include 576-A-1,2,3, 576-B-1,2,3, 576-C, 576-D, 576-E, OSTF-1 and OSTF-2.

Cape Canaveral Air Force Station Launch Complex 11

Launch Complex 11 (LC-11) at Cape Canaveral Air Force Station, Florida, is a launch complex used by Atlas missiles between 1958 and 1964. It is the southernmost of the launch pads known as Missile Row. When it was built, it, along with complexes 12, 13 and 14, featured a more robust design than many contemporary pads, due to the greater power of the Atlas compared to other rockets of the time. It was larger, and featured a concrete launch pedestal that was 6 metres (20 ft) tall and a reinforced blockhouse. The rockets were delivered to the launch pad by a ramp on the southwest side of the launch pedestal.

Cape Canaveral Air Force Station Launch Complex 13 former launch complex at Cape Canaveral; replaced with Landing Zone 1

Launch Complex 13 (LC-13) was a launch complex at Cape Canaveral Air Force Station, the third-most southerly of the original launch complexes known as Missile Row, lying between LC-12 and LC-14. The LC-13 site is currently leased by SpaceX and has been renovated for use as Landing Zone 1 and Landing Zone 2, their east coast landing location for returning Falcon 9 and Falcon Heavy launch vehicle booster stages.

References