. "Convair"@en . . "1370"^^ . "3"^^ . "turbojets"@en . "7.22"^^ . . . "44000"^^ . . . . "Cancelled in 1949"@en . . . . "580"^^ . . "24.6"^^ . "Convair XB-53"@en . . "The Convair XB-53 was a proposed jet-powered medium bomber aircraft, designed by Convair for the United States Army Air Forces. With a radical tailless, forward-swept wing design, the aircraft appeared futuristic; however, the project was canceled before either of the two prototypes was completed."@en . "2000"^^ . "4"^^ . "31760"^^ . . "The Convair XB-53 was a proposed jet-powered medium bomber aircraft, designed by Convair for the United States Army Air Forces. With a radical tailless, forward-swept wing design, the aircraft appeared futuristic; however, the project was canceled before either of the two prototypes was completed."@en . . "60000"^^ . "n/a"@en . . . . "4000"^^ . . "kts"@en . . . "0"^^ . . "24.2"^^ .