Hailed as super weapons, the supersonic bomber B-70 Valkyrie or A-12 Avenger have never entered combat and the project was canceled after only completing the prototype.
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| AH-56 Cheyenneis an attack helicopter model manufactured by Lockheed for the US military in the 1960s. The US military has placed a lot of ambition on the project, which when operational will be the most powerful helicopter in the world, creating a revolution in air fire support. Photo: US Army. |
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| The AH-56 is a combination of high speed and powerful weapons. The helicopter is equipped with 2 rotors at the tail to increase thrust. Under the belly is a 30mm automatic cannon, the two side wings have 6 suspension points for anti-tank missiles or rockets. However, the Pentagon discontinued the AH-56 in 1972 because it did not meet the requirements. Photo: US Army. |
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| B-70 ValkyrieIt was originally intended to be the most powerful strategic bomber in the sky. It was designed to fly at speeds of up to Mach 3 (about 3,300 km/h). At the time in the early 1960s, no weapon could stop it. Photo: USAF. |
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| The B-70 was equipped with up to 6 jet engines. Its mission was to carry nuclear weapons to attack the Soviet Union if necessary. However, the advent of intercontinental ballistic missiles made its role obsolete, while the cost was too high. The project was canceled in 1969, 2 prototypes were built, 1.5 billion USD was "burned" on the project. Photo: USAF. |
The B-70's undercarriage caught fire upon landing.
Due to the excessive weight, the tire system could not respond and exploded and caught fire violently when the B-70 landed.
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| A-12 Avengerwas an ambitious stealth aircraft project of the US Navy in the 1980s. The aircraft had a strange aerodynamic design in the shape of a triangle with weapons bays inside the fuselage. It would use stealth to secretly approach the enemy's shores and launch attacks. Graphic photo: McDonnell Douglas. |
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| However, the project involved too many complex technologies, while the main contractor had not yet proven its ability to complete the project. The US Department of Defense canceled the project in 1991. This event contributed to the contractor's bankruptcy and merger with Boeing in 1997. Photo: Marvellouswings. |
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| Future Combat System (FCS)is a US military combat equipment modernization program that began in 2003. The program aims to develop advanced ground combat vehicles, including the XM-1203 NLOS-C self-propelled howitzer (pictured) and many other weapons. Photo: US Army. |
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| ARV unmanned reconnaissance and combat vehiclewas part of the FCS program. However, most of the FCS components were gradually phased out due to high costs and lack of proven effectiveness. In 2009, the FCS was canceled, and the US Army will apply separate modernization programs for each type of weapon. Photo: US Army. |
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| Coast Guard Ship (SCS)was a project proposed by Admiral Elmo Zumwalt, Chief of Naval Operations of the United States, in the 1970s. The idea was to develop light aircraft carriers carrying a number of aircraft to control the seas near the Soviet Union, instead of large aircraft carriers. Graphic photo: US Navy. |
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| SCS was a type of "split" force to increase flexibility while reducing the burden on escort ships in an all-out war with the Soviet Union. SCS was canceled in 1973 as part of the US Navy's budget reduction plan. Simulation: Defensemedia . |
