Matches in DBpedia 2014 for { ?s ?p The Vickers-Armstrongs Valiant was a British four-jet bomber, once part of the Royal Air Force's V bomber nuclear force in the 1950s and 1960s. The Valiant was the first of the V bombers to become operational, and was followed by the Handley Page Victor and the Avro Vulcan; however it was noticeably less advanced than its counterparts. Several Valiants were soon converted to perform various support roles, such as aerial refuelling tankers and reconnaissance aircraft. The Valiant was originally intended for operations as high-level strategic bomber; advances in anti-aircraft technologies meant that a low-level mission profile was assumed. However, continuous low-level flight led to a number of serious problems as the Valiant's wing spar attachment castings showed premature fatiguing and inter-crystalline corrosion traced to the use of an inappropriate type of aluminium alloy. Rather than proceeding with an expensive rebuilding program, the Valiant was formally retired in 1965. Its duties were continued by the other V-bombers which remained in service until the 1980s.. }
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- Vickers_Valiant abstract "The Vickers-Armstrongs Valiant was a British four-jet bomber, once part of the Royal Air Force's V bomber nuclear force in the 1950s and 1960s. The Valiant was the first of the V bombers to become operational, and was followed by the Handley Page Victor and the Avro Vulcan; however it was noticeably less advanced than its counterparts. Several Valiants were soon converted to perform various support roles, such as aerial refuelling tankers and reconnaissance aircraft. The Valiant was originally intended for operations as high-level strategic bomber; advances in anti-aircraft technologies meant that a low-level mission profile was assumed. However, continuous low-level flight led to a number of serious problems as the Valiant's wing spar attachment castings showed premature fatiguing and inter-crystalline corrosion traced to the use of an inappropriate type of aluminium alloy. Rather than proceeding with an expensive rebuilding program, the Valiant was formally retired in 1965. Its duties were continued by the other V-bombers which remained in service until the 1980s.".