The XB-70 Valkyrie was the biggest airplane to fly MACH 3. The concept for the deep-penetration bomber emerged at the height of the Cold War in the 1950s as an option to replace the B-52.

Exemplifying the period was the North American XB-70 Valkyrie, a supersonic bomber with impressive specifications and a cult-like place in the annals of aviation history. Designed in the early ...

Here’s What You Need to Remember: Only two of the enormous XB-70 bombers were ever built; one resides in a museum in Ohio, the other was destroyed in a collision in ...

A unique bomber-style fighter jet, the North American XB-70 Valkyrie has a top speed of around 2,050 mph, which is about Mach 3, depending on the altitude. This experimental fighter never ...