XB-70A Mach 3 Design and Operating Experience 660274

The XB-70A represents the most advanced example of the evolution and technological advances of manned aircraft in the past decade. It is, in effect, the forerunner of SST type aircraft and in itself is responsible for many items or features that have been subsequently embodied in contemporary military aircraft. This paper describes the unique aerodynamic concepts and configuration of the XB-70A and its airborne systems. Results of the current flight test program are summarized along with discussions on “gremlin” areas during fabrication and flight testing, and how they were or are being solved. Examples of improvements in air vehicle No. 2 as a result of air vehicle No. 1 experience are presented, including a summary of major system reliability demonstrated during the flight test program as an indicator of the potential refinements in cost and performance possible for future large high-speed aircraft.