A Technique for Monitoring Flight-Test Envelope Expansion.

A technique for monitoring flight-test envelope expansion is described. This 'Smart Book' technique was used for the successful helicopter mode envelope expansion of the XH-59A Advancing Blade Concept (ABC) technology demonstrator aircraft. The technique contributed to the safety and success of the XH-59A program, provided control over the envelope expansion, and constituted a technical focal point that enhanced coordination between the Government and contractor test team members. (Author)