BOMARC IM-99, CIM-10A and B)

BOMAR from partnership that developed the concept, Boeing Airplane Company (BO) and Michigan Aeronautical Research Center (MARC).  Development began in 1950 as a replacement for the GAPA (Ground to air pilotless aircraft) missile, a 35 mile range antiaircraft missile development program that began in 1946 as project MX-606.

A Model - 47 feet long with a 18 foot wingspan, and weighed 15,500 pounds.  Speeds up to Mach 2.8 for range of 250 miles and ceiling of 60,000 feet.  Booster engine was an Aerojet General LR-59-AJ-13 producing 35,000 pounds of thrust, burned nitric acid and kerosene.  The booster was fueled immediately before launch in about two minutes.  Sustainer engines were two Marquardt RJ-43-MA-7 ramjets producing 11,500 pounds of thrust each.   First launch at Cape Canaveral 10 September 1952

B Model - 45 feet long and a wingspan similar to the A.  Range was 440 miles and the ceiling up to 100,000 feet.  Booster was a 50,000 pound thrust Thiokol XM-51 solid rocket motor, so the missile could be launched immediately after it was erected.  Ramjets were slightly upgraded to 12,000 pounds thrust each.  First launch in May 1959, but problems with the new propulsion system delayed the first fully successful flight until July 1960, when a supersonic Regulus II drone was intercepted

Deployment -  Housed horizontally in semi-hardened coffins, and were raised to vertical for launch.  Launched by a rocket booster and then ramjet engines powered the missile to the target.   Could be armed with conventional or 7 to 10 kiloton nuclear warhead.   Westinghouse ground guidance system integrated into the Air Defense Command Semi-Automatic Ground Environment (SAGE) network guided the missile to the vicinity of the target and the active homing radar system on the missile provided terminal guidance to the target aircraft for the final ten miles.

269 A models were produced and 140 deployed in five locations.  570 B model followed, with 242 deployed at eight sites, including two Royal Canadian Air Force units.