Launch Complex 576 is a group of rocket launch pads at Vandenberg Space Force Base. The pads were used from 1959 until 1971 to launch SM-65 Atlas missiles. The site was also known as Complex ABRES. [1] Pads in Area 576 include 576A-1, 576A-2 and 576A-3, 576B-1, 576B-2 and 576B-3, 576-C, 576-D, 576-E, OSTF-1 and OSTF-2. [2]
The first operational launch of an Atlas missile by the Strategic Air Command was conducted from 576A-2 by the 576th Strategic Missile Squadron on September 9, 1959. It impacted 4,480 nautical miles (8,300 km) away, near Wake Island. [3]
The first Atlas F launch at Vandenberg took place from 576-E on 1 August 1962. [4] Orbital Sciences Corporation now launches their Taurus rockets from 576-E. [5] [6] The LC 576E is also a candidate site for launches of Kinetic Energy Interceptor (KEI) boosters. The USAF and Missile Defense Agency anticipate a minimum of three KEI launches per year from 2009 to at least 2012. [6]
The first pad in the complex, 576A-2, hosted the inaugural Atlas launch from the West Coast when Missile 12D flew a successful 1,800 kilometres (1,100 mi) arc across the Pacific Ocean on 9 September 1959. The site was not used again until 1965 when it was converted for the Atlas F and hosted 13 ABRES and OV-1 launches.
The second pad in the complex, 576A-3, began operation in 1960. It hosted reentry vehicle and Nike-Zeus target tests on the Atlas D and Atlas F through 1974.
Pad 576A-1 was severely damaged when Atlas 19D exploded on it during a fuel loading exercise on 5 March 1960. It did not enter regular use as a launching facility until 1962 when it hosted Atlas D reentry vehicle and Nike-Zeus target tests. In 1967, the pad was converted for the Atlas F and hosted more reentry vehicle tests until being decommissioned in 1974. One space launch took place from 576A-1, the launch of RADSAT in 1972.
576B's three pads were coffins sites for Atlas ICBM tests. The facility was the source of some trouble in the beginning due to a construction error as one umbilical on the silo was installed incorrectly. After four failed launches from 576B, it was discovered that the umbilical was releasing prematurely at liftoff when it still had live electrical current in it, which shorted out components in the missiles. Repairs were made during early 1961 and launches resumed that May 1961.
576B-1 began operation in 1960 and hosted five missile tests until 1965, when it hosted Nike-Zeus and reentry vehicle tests. The pad was decommissioned in 1966.
576B-2 hosted Atlas D ICBM tests from 1960 to 1963, then it supported Nike-Zeus and reentry vehicle tests. The pad was decommissioned in 1967.
576B-3 hosted Atlas D ICBM tests from 1960 to 1963, then it supported reentry vehicle and OV-1 satellite launches. The pad was decommissioned in 1967.
Pad 576C was only used for three Atlas E tests in 1963.
Pad 576D was only used for two Atlas F tests in 1963-1964.
Pad 576E was used for four Atlas F tests in 1962-1964. Since 1994, the facility was revived for Minotaur-C and Taurus launches.
The LGM-30 Minuteman is a U.S. land-based intercontinental ballistic missile (ICBM), in service with the Air Force Global Strike Command. As of 2021, the LGM-30G Minuteman III version is the only land-based ICBM in service in the United States and represents the land leg of the U.S. nuclear triad, along with the Trident submarine-launched ballistic missile (SLBM) and nuclear weapons carried by long-range strategic bombers.
The SM-65 Atlas was the first operational intercontinental ballistic missile (ICBM) developed by the United States and the first member of the Atlas rocket family. It was built for the U.S. Air Force by the Convair Division of General Dynamics at an assembly plant located in Kearny Mesa, San Diego. Atlas became operational in October 1959, but was soon made obsolete as an ICBM by new development, and was retired from this role by 1965.
Vandenberg Space Force Base is a United States Space Force Base located 14.8 km (9.2 mi) northwest of Lompoc, California. Established in 1941, Vandenberg Space Force Base is a space launch base, launching spacecraft from the Western Range and also performs missile testing. The United States Space Force's Space Launch Delta 30 serves as the host delta for the base. In addition to its military space launch mission, Vandenberg Space Force Base also performs space launches for civil and commercial space entities, such as NASA.
A launch pad is an above-ground facility from which a rocket-powered missile or space vehicle is vertically launched. The term launch pad can be used to describe just the central launch platform, or the entire complex. The entire complex will include a launch mount or launch platform to physically support the vehicle, a service structure with umbilicals, and the infrastructure required to provide propellants, cryogenic fluids, electrical power, communications, telemetry, rocket assembly, payload processing, storage facilities for propellants and gases, equipment, access roads, and drainage.
The Titan II was an intercontinental ballistic missile (ICBM) and space launcher developed by the Glenn L. Martin Company from the earlier Titan I missile. Titan II was originally designed and used as an ICBM, but was later adapted as a medium-lift space launch vehicle to carry payloads to Earth orbit for the United States Air Force (USAF), National Aeronautics and Space Administration (NASA) and National Oceanic and Atmospheric Administration (NOAA). Those payloads included the USAF Defense Meteorological Satellite Program (DMSP), NOAA weather satellites, and NASA's Gemini crewed space capsules. The modified Titan II SLVs were launched from Vandenberg Air Force Base, California, up until 2003.
The Sprint was a two-stage, solid-fuel anti-ballistic missile (ABM), armed with a W66 enhanced-radiation thermonuclear warhead used by the United States Army. It was designed to intercept incoming reentry vehicles (RV) after they had descended below an altitude of about 60 kilometres, where the thickening air stripped away any decoys or radar reflectors and exposed the RV to observation by radar. As the RV would be travelling at about 5 miles (8.0 km) per second, Sprint had to have phenomenal performance to achieve an interception in the few seconds before the RV reached its target.
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.
The 576th Flight Test Squadron is a United States Air Force direct reporting unit assigned to Air Force Global Strike Command. The 576th is stationed at Vandenberg Air Force Base, California.
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.
The SM-65E Atlas, or Atlas-E, was an operational variant of the Atlas missile. It first flew on 11 October 1960, and was deployed as an operational ICBM from September 1961 until April 1966. Following retirement as an ICBM, the Atlas-E, along with the Atlas-F, was refurbished for orbital launches as the Atlas E/F. The last Atlas E/F launch was conducted on 24 March 1995, using a rocket which had originally been built as an Atlas E.
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.
Launch Complex 12 (LC-12) at Cape Canaveral Space 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.
Nike Zeus was an anti-ballistic missile (ABM) system developed by the US Army during the late 1950s and early 1960s that was designed to destroy incoming Soviet intercontinental ballistic missile warheads before they could hit their targets. It was designed by Bell Labs' Nike team, and was initially based on the earlier Nike Hercules anti-aircraft missile. The original, Zeus A, was designed to intercept warheads in the upper atmosphere, mounting a 25 kiloton W31 nuclear warhead. During development, the concept changed to protect a much larger area and intercept the warheads at higher altitudes. This required the missile to be greatly enlarged into the totally new design, Zeus B, given the tri-service identifier XLIM-49, mounting a 400 kiloton W50 warhead. In several successful tests, the B model proved itself able to intercept warheads, and even satellites.
The Utah Launch Complex was a Cold War military subinstallation of White Sands Missile Range for USAF and US Army rocket launches. In addition to firing Pershing missiles, the complex launched Athena RTV missiles with subscale (test) warheads of the Advanced Ballistic Re-entry System to reentry speeds and impact at the New Mexico range. From 1964 to 1975 there were 244 Green River launches, including 141 Athena launches and a Pershing to 281 kilometers altitude. "Utah State Route 19 runs through the Green River Launch Complex, which is south of the town and eponym of Green River."
The Operational Silo Test Facility (OSTF) is a former United States Air Force intercontinental ballistic missile launch facility at Vandenberg Space Force Base, California, United States. It was a developmental launch site for the silo-based Titan and Atlas missile series.
Launch Complex 576A, also known as Area 576, is a group of rocket launch pads at Vandenberg Air Force Base. The pads at the complex were used from 1959 until 1971 to launch SM-65 Atlas missiles. The site was also known as Complex ABRES. Pads in Area 576A include 576-A-1,2,3
Orbiting Vehicle 1-3, was the second satellite in the OV1 series of the United States Air Force's Orbiting Vehicle program. OV1-3 was an American life science research satellite designed to measure the effects of orbital radiation on the human body. Launched 28 May 1965, the mission resulted in failure when its Atlas booster exploded two minutes after launch.
Orbiting Vehicle 1-5 was launched 30 Mar 1966, and was the fifth satellite in the OV1 series of the United States Air Force's Orbiting Vehicle program. OV1-5 conducted optical experiments, surveying the Earth in the infrared spectrum to see if water, land, mountains and deserts could be distinguished by their thermal gradients. It was launched concurrently with OV1-4 in the first ever side-by-side satellite orbital deployment.
Media related to Vandenberg Space Force Base Launch Complex 576 at Wikimedia Commons
Coordinates: 34°44′22″N120°37′09″W / 34.73944°N 120.61917°W