Allan J McdonaldAllan J. McDonald (1937‒2021) retired as vice president and
technical director for advanced technology programs at ATK Thiokol Propulsion
in 2001. He was the director of the Space Shuttle Solid Rocket Motor Project at
the time o the Challenger accident and, later, vice president
of engineering for space operations during the redesign and requalification of
the solid rocket motors. Read More Read Less