Douglas WB-66D Destroyer
In 1951, the US Air Force issued a requirement for a tactical bomber capable of carrying nuclear weapons that would also serve as a replacement for the aging A-26 Invader. Several companies submitted designs, but it was Douglas who won the bid: while North American had proposed a modified B-45 Tornado and Boeing a modified B-47 Stratojet, Douglas’ proposal was a USAF variant of the carrier-based, strategic bomber already being built by the company for the US Navy, the A3D Skywarrior.
Since this offered a great deal of cost saving, the USAF ordered five preproduction RB-66A Destroyers, as the A3D was already a proven aircraft and would not need any prototype testing. All that was needed, the USAF assumed, was to convert it from a high-altitude, carrier-based nuclear bomber to a low-altitude, land-based nuclear bomber; the only modifications thought to be needed was stripping out the naval equipment, reinforcing the structure for low-level operations, and equipping the cockpit with ejection seats, which the A3D lacked.
As the modification of the first five Destroyers proceeded, the USAF learned that much more needed to be done. Installing the ejection seats meant completely redesigning the cockpit and the canopy. Strengthening the airframe meant rerouting hydraulic systems. Since the USAF used a different refueling method, the fuel system had to be redesigned. The USAF specification had also called for a more comprehensive electronic warfare suite, requiring the weapons bay to be redesigned; it had called for defensive armament, leading to a redesign of the tail to accommodate two 20mm cannon; it had called for operations from unimproved runways, which meant the landing gear wheels had to be larger. In the end, the list of modifications was so long that the USAF seriously considered cancelling the project. Though it was allowed to continue as too much money had already been spent on it, the USAF got an entirely new aircraft. The RB-66As were only used briefly for testing, and the follow-on B-66B bombers had their initial order cut in half. Deliveries finally began in 1956.
While the B-66 had become something of an albatross for the USAF, it had potential. The bomber version found itself quickly overtaken by faster and more capable aircraft, such as the F-105 Thunderchief, but just as the US Navy had begun modifying its A3Ds into a variety of roles, so did the USAF. Purpose-built RB-66B tactical reconnaissance aircraft were first used in 1962 during the Cuban Missile Crisis, where crews found that the Destroyer’s long range and loiter time made it very valuable to keep an eye on developments. The USAF rapidly converted B-66B bombers and RB-66Bs into RB-66C electronic intelligence and finally EB-66C/E electronic warfare aircraft. The latter could operate both in the jamming role and in intelligence gathering, and had a crew of seven with all armament deleted for ECM equipment. It was not entirely popular with its crews, as pilots found the Destroyer to be difficult to fly and aircrew found it dangerous to bail out of.
As Operation Rolling Thunder began over North Vietnam in 1965, RB-66s were first used as pathfinder bombers for formations of F-105s, using their electronic equipment to mark targets through bad weather. As North Vietnam’s air defenses improved and grew, the RB-66s were withdrawn for EB-66s, which now accompanied strike packages into North Vietnam to jam gunlaying radars, surface-to-air missile sites, and air defense radars, as well as lay down chaff corridors for strike aircraft to fly through. Other RB-66s were modified for use in finding targets over the Ho Chi Minh trail supply network to South Vietnam. EB-66s would remain in service for the duration of the war and afterwards, being finally withdrawn in 1975. The USAF went a few years without a standoff jamming aircraft until the deployment of the EF-111 Raven. 294 B-66s were built, and today seven remain in museums.
Of the seven B-66s left, three are WB-66 variants; these were designed to fly ahead of bombing raids and report back on weather conditions--vital in the days before real-time satellite weather reporting. 55-0395 reported for duty in 1957 with the 363rd Tactical Reconnaissance Wing at Shaw AFB, South Carolina, and participated in Cold War forward deployments to Turkey, flying along the edges of Soviet airspace to keep up to date on weather over the USSR--just in case it was necessary to go to war that day. It was retired in 1964, but was brought out of storage briefly in 1969 before it was retired for good that same year. It was donated to the Pima Air and Space Museum in 1975.
55-0395 wears faded USAF Southeast Asia camouflage--by the time the aircraft was reactivated in 1969, bare metal had virtually disappeared from the USAF. EB-66s and RB-66s deployed to Southeast Asia would have worn this scheme. One of 55-0395's Allison J71 engines is shown to the right.
Douglas WB-66D Destroyer
In 1951, the US Air Force issued a requirement for a tactical bomber capable of carrying nuclear weapons that would also serve as a replacement for the aging A-26 Invader. Several companies submitted designs, but it was Douglas who won the bid: while North American had proposed a modified B-45 Tornado and Boeing a modified B-47 Stratojet, Douglas’ proposal was a USAF variant of the carrier-based, strategic bomber already being built by the company for the US Navy, the A3D Skywarrior.
Since this offered a great deal of cost saving, the USAF ordered five preproduction RB-66A Destroyers, as the A3D was already a proven aircraft and would not need any prototype testing. All that was needed, the USAF assumed, was to convert it from a high-altitude, carrier-based nuclear bomber to a low-altitude, land-based nuclear bomber; the only modifications thought to be needed was stripping out the naval equipment, reinforcing the structure for low-level operations, and equipping the cockpit with ejection seats, which the A3D lacked.
As the modification of the first five Destroyers proceeded, the USAF learned that much more needed to be done. Installing the ejection seats meant completely redesigning the cockpit and the canopy. Strengthening the airframe meant rerouting hydraulic systems. Since the USAF used a different refueling method, the fuel system had to be redesigned. The USAF specification had also called for a more comprehensive electronic warfare suite, requiring the weapons bay to be redesigned; it had called for defensive armament, leading to a redesign of the tail to accommodate two 20mm cannon; it had called for operations from unimproved runways, which meant the landing gear wheels had to be larger. In the end, the list of modifications was so long that the USAF seriously considered cancelling the project. Though it was allowed to continue as too much money had already been spent on it, the USAF got an entirely new aircraft. The RB-66As were only used briefly for testing, and the follow-on B-66B bombers had their initial order cut in half. Deliveries finally began in 1956.
While the B-66 had become something of an albatross for the USAF, it had potential. The bomber version found itself quickly overtaken by faster and more capable aircraft, such as the F-105 Thunderchief, but just as the US Navy had begun modifying its A3Ds into a variety of roles, so did the USAF. Purpose-built RB-66B tactical reconnaissance aircraft were first used in 1962 during the Cuban Missile Crisis, where crews found that the Destroyer’s long range and loiter time made it very valuable to keep an eye on developments. The USAF rapidly converted B-66B bombers and RB-66Bs into RB-66C electronic intelligence and finally EB-66C/E electronic warfare aircraft. The latter could operate both in the jamming role and in intelligence gathering, and had a crew of seven with all armament deleted for ECM equipment. It was not entirely popular with its crews, as pilots found the Destroyer to be difficult to fly and aircrew found it dangerous to bail out of.
As Operation Rolling Thunder began over North Vietnam in 1965, RB-66s were first used as pathfinder bombers for formations of F-105s, using their electronic equipment to mark targets through bad weather. As North Vietnam’s air defenses improved and grew, the RB-66s were withdrawn for EB-66s, which now accompanied strike packages into North Vietnam to jam gunlaying radars, surface-to-air missile sites, and air defense radars, as well as lay down chaff corridors for strike aircraft to fly through. Other RB-66s were modified for use in finding targets over the Ho Chi Minh trail supply network to South Vietnam. EB-66s would remain in service for the duration of the war and afterwards, being finally withdrawn in 1975. The USAF went a few years without a standoff jamming aircraft until the deployment of the EF-111 Raven. 294 B-66s were built, and today seven remain in museums.
Of the seven B-66s left, three are WB-66 variants; these were designed to fly ahead of bombing raids and report back on weather conditions--vital in the days before real-time satellite weather reporting. 55-0395 reported for duty in 1957 with the 363rd Tactical Reconnaissance Wing at Shaw AFB, South Carolina, and participated in Cold War forward deployments to Turkey, flying along the edges of Soviet airspace to keep up to date on weather over the USSR--just in case it was necessary to go to war that day. It was retired in 1964, but was brought out of storage briefly in 1969 before it was retired for good that same year. It was donated to the Pima Air and Space Museum in 1975.
55-0395 wears faded USAF Southeast Asia camouflage--by the time the aircraft was reactivated in 1969, bare metal had virtually disappeared from the USAF. EB-66s and RB-66s deployed to Southeast Asia would have worn this scheme. One of 55-0395's Allison J71 engines is shown to the right.