![]() Nevertheless, in 1963 plans for the production of three high-speed research aircraft were approved and construction proceeded. However, in April 1961, Defense Secretary McNamara stopped the production go-ahead for the B-70 because of rapid cost escalation and the USSR's newfound ability to destroy aircraft at extremely high altitude using either missiles or the new Mig-25 fighter. The concept was born as a result of General Curtis LeMay's desire for a heavy bomber with the weapon load and range of the subsonic B-52 and a top speed in excess of the supersonic medium bomber, the B-58 Hustler. new information, photographs and first-hand accounts." -FlypastÄuring the 1950s, plans were being drawn at North American Aviation in Southern California for an incredible Mach-3 strategic bomber. ![]() "A fascinating insight into one of the Cold War's most interesting concept aircraft.
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