- CIM-10 Bomarc
The CIM-10 Bomarc (originally IM-99) was the product of the Bomarc Missile Program. The Program was a joint United States of America–
Canadaeffort between 1957and 1971to protect against the USSR bomber threat. The Bomarc was a joint development with Boeingand Michigan Aeronautical Research Center. It involved the deployment of tactical stations armed with Bomarc missiles along the east and west coasts of North Americaand the central areas of the continent. BOMARC and the SAGE guidance system were phased out in the early 1970s since they seemed to be ineffective and costly. Neither of these systems was ever used in combat, so while their combat effictiveness remains untested, they are still perceived as having been an important deterrant.
The supersonic Bomarc missiles were the first long-range
anti-aircraft missilesin the world. They were capable of carrying conventional or nuclear warheads. Their intended role in defence was in an intrusion prevention perimeter. Bomarcs aligned on the eastern and western coasts of North America would theoretically launch and destroy enemy bombers before the bombers could drop their payloads on industrial regions.
Design and development
The name Bomarc was created by merging the names of two organizations: Boeing 'BO' and the Michigan Aeronautical Research Center 'MARC'. The Program was authorized in 1949 and originally designated F-99, a fighter designation but was quickly redesignated "IM" for Interceptor Missile, retaining the -99 series number.
The "Bomarc IM-99A" was the first production Bomarc missile, test flown in February 1955. It had an operational radius of 200 miles (~320 km) and was designed to fly at Mach 2.5-2.8 at a cruising altitude of 60,000 feet (18.3 km). It was 46.6 ft (14.2 m) long and weighed 15,500 lb (7,020 kg). Its armament was either a 1,000 pound (455 kg) conventional warhead or a
W40nuclear warhead (7-10 kilotonyield). A liquid fuelled rocketengine boosted the Bomarc to Mach 2, when its Marquardt RJ43-MA-3 ramjetengines would take over for the remainder of the flight.
The "Super Bomarc IM-99B" was the 99A's successor, with a solid fuel booster rocket and improvements to its operational parameters. It was capable of striking targets within a radius of 400 miles, and able to fly at Mach 4 as high as 100,000 feet. It was 45 ft (13.7 m) long, weighed 16,000 lb (7,250 kg) with a W40 nuclear warhead as armament.
The Bomarc relied on the
Semi Automatic Ground Environment(SAGE), an automated control system used by NORAD for detecting, tracking and intercepting enemy bomber aircraft. SAGE allowed for remote launching of the Bomarc missiles, which were housed in a constant combat-ready basis in individual launch shelters in remote areas. At the height of the program, there were 14 Bomarc sites located in the United States and two in Canada.
Boeing built 570 Bomarc missiles between 1957 and 1964, 269 CIM-10A, 301 CIM-10B.
Gibson 1996, p. 199.]
Canada and the Bomarc
The Bomarc Missile Program was highly controversial in Canada. The Progressive Conservative government of Prime Minister
John Diefenbakerinitially agreed to deploy the missiles, and shortly thereafter controversially scrapped the Avro Arrowinterceptor program arguing that the missile program made the Arrow unnecessary.
Initially, it was unclear whether the missiles would be equipped with nuclear warheads. Once their use as nuclear weapons became known in
1960, a debate ensued about whether Canada should accept nuclear weapons. Ultimately, the Diefenbaker government decided that the Bomarcs should be equipped with conventional warheads. The dispute split the Diefenbaker Cabinet, and led to the collapse of the government in 1963. The Opposition Liberal Party argued in favour of accepting nuclear warheads, and, after winning the 1963 election, the new Liberal government of Lester Pearsonproceeded to accept nuclear warheads, with the first being deployed on 31 December 1963. Pierre Trudeau, still working as a journalist, attacked Pearson for the decision. While he was forced to reverse himself when he decided to run as a candidate for the Liberals in the 1965 election, he remained unenthusiastic. Shortly after becoming prime minister in 1968, he announced that the missiles would be phased out by 1971.
Although a number of IM-99/CIM-10 Bomarcs have been placed on public display, concerns about the possible environmental hazards of the thoriated magnesium structure of the airframe have resulted in several being removed from public view. Radioactive contamination from a fire at
McGuire AFB, N.J., that destroyed an active Bomarc-A airframe on the launch pad on 7 June 1960, resulted in that area remaining off-limits to the present day. However, the nuclear warhead was not activated in this Broken Arrow accident. The site remained in operation for several years following the fire.
Russ Sneddon, director of the USAF Armament Museum,
Eglin AFB, Florida provided information about missing CIM-10 exhibit airframe serial 59-2016, one of the museum's original artifacts from its founding in 1975 and donated by the 4751st Air Defense Squadron at Hurlburt Field, Eglin Auxiliary Field 9, Eglin AFB. As of December 2006, the suspect missile was still stored in a secure compound behind the Armaments Museum.
Royal Canadian Air Force;flag|United States
United States Air Force
Below is a list of museums or sites which have a Bomarc missile on display:
Air Force Armament Museum, Eglin Air Force Base, Florida
Air Force Space & Missile Museum, Cape Canaveral Air Force Station, Florida
Alberta Aviation Museum, Edmonton, Alberta, Canada
Canada Aviation Museum, Ottawa, Ontario, Canada
* Florence Air & Missile Museum, Florence,
Hill Aerospace Museum, Hill Air Force Base, Utah
* Historical Electronics Museum,
Baltimore, Maryland(display of AN/DPN-53, the first airborne pulse-doppler radar, used in the Bomarc)
* Illinois Soldiers & Sailors Home, Quincy,
Keesler Air Force Base, Biloxi, Mississippi
* Lee Park, North Bay,
Museum of Aviation, Robins Air Force Base, Warner Robins, Georgia
National Atomic Museum, Kirtland Air Force Base, Albuquerque, New Mexico
National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio
Octave Chanute Aerospace Museum, Rantoul, Illinois
Peterson Air and Space Museum, Peterson Air Force Base, Colorado
Strategic Air and Space Museum, Bellevue, Nebraska
* US Air Force History and Traditions Museum,
San Antonio, Texas
Vandenberg Air Force Base, near the Vandenberg Cold War Museum, California. Bomarc not for public access.
* Clearwater, John. "Canadian Nuclear Weapons." Toronto: Dundern Press, 1999. ISBN 1-55002-299-7.
* Gibson, James N. "Nuclear Weapons of the United States - An Illustrated History ". Atglen, Pennsylvania: Schiffer Publishing Ltd., 1996, ISBN 0-7643-0063-6.
* Nicks, Don, Bradley, John and Charland, Chris. "A History of the Air Defence of Canada 1948-1997." Ottawa: Commander Fighter Group, 1997. ISBN 0-9681973-0-2.
* "Pedigree of Champions: Boeing Since 1916, Third Edition". Seattle, WA: The Boeing Company, 1969.
* [http://www.boeing.com/history/boeing/bomarc.html Boeing Company History, Bomarc]
* [http://www.pinetreeline.org/misc/bomarc/bomarc8.html History of the Royal Canadian Air Force "Pinetree Line" air defense stations]
* [http://www.radomes.org/museum/recent/McGuireAFBBOMARCNJ.html Bomarc pictures]
* [http://www.airforce.forces.gc.ca/site/equip/historical/bomarclst_e.asp Official DND webpage on the BoMARC]
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