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Air-launched ballistic missile

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Title: Air-launched ballistic missile  
Author: World Heritage Encyclopedia
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Subject: GAM-87 Skybolt, LGM-30 Minuteman, Line-of-sight (missile), V bomber, Hopi (missile)
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Air-launched ballistic missile

An air-launched ballistic missile or ALBM is a ballistic missile launched from an aircraft. An ALBM allows the launch aircraft to stand off at long distances from its target, keeping it well outside the range defensive weapons like anti-aircraft missiles and interceptor aircraft. Once launched, the missile is essentially immune to interception. This combination of features allowed a strategic bomber to present a credible deterrent second-strike option in an era when improving anti-aircraft defences appeared to be rendering conventional bombers obsolete.

The ALBM concept was only seriously studied in the US, largely as a way to ensure the usefulness and survivability of their large bomber fleet. After testing several experimental designs as part of the WS-199 efforts, the USAF began development of the GAM-87 Skybolt missile with range on the order of 1,150 miles (1,850 km). The only other major force relying on strategic bombers was the Royal Air Force, who also selected the Skybolt to arm their V bomber fleet. The Soviet Union does not appear to have seriously studied the concept, moving their strategic force directly to ICBMs.

Skybolt ultimately failed several key tests, while the US Navy's UGM-27 Polaris offered the same advantages and more. Skybolt was cancelled, leading to the Skybolt crisis and an agreement to sell Polaris to the Royal Navy as part of the Nassau Agreement. The concept saw little active development until the 1970s when ICBM warheads began to become accurate enough to attack other ICBM's while they were still on the ground. The US carried out several experiments using existing missile designs dropped from cargo aircraft, but ultimately abandoned this line of research entirely. No further strategic ALBM development has been carried out, and this class of missile never saw active use.

GAM-87 Skybolt

The only known missile of this type that was intended for operational service, the GAM-87 Skybolt, intended to be launched from B-52 Stratofortress and Avro Vulcan bombers, was in development by the United States Air Force, with the United Kingdom as a customer. In 1962, with technical difficulties and costs mounting, the program was cancelled, with the United States and the UK concentrating on the UGM-27 Polaris submarine-launched ballistic missile instead.

Air Mobile Feasibility Test: C-5 w/ LGM-30

Air Mobile Feasibility Demonstration – 24 October 1974
In the early 1970s, the USAF tested air launching a C-5A Galaxy aircraft air dropped the 86,000-pound missile from 20,000 feet over the Pacific Ocean. The missile fell to 8,000 feet before its rocket engine fired. The 10-second engine burn carried the missile to 20,000 feet again before it dropped into the ocean. The test proved the feasibility of launching an intercontinental ballistic missile from the air. Operational deployment was discarded due to engineering and security difficulties, though the capability was used as a negotiating point in the Strategic Arms Limitation Talks.[1][2]

Air-launched ballistic training missiles

The Israeli Sparrow target missile is used to test the Arrow anti-ballistic missile system.[3]

References

  1. ^ U.S. Air Force, Inside the AF.MIL Heritage section (Thursday, January 01, 1970 - Sunday, December 31, 1989)
  2. ^ Marti and Sarigul-Klijn, A Study of Air Launch Methods for RLVs. Doc No. AIAA 2001-4619, Mechanical and Aeronautical Engineering Dept, University of California, Davis, CA 95616
  3. ^ Jim Miklaszewski, Courtney Kube and Alastair Jamieson (September 3, 2013). "Amid Syria tension, Israel test-fires missile over Mediterranean Sea". NBC News. 

External links

  • Air-launched Minuteman ICBM


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