Before revision: Many industry examples are included in Utterback's book Mastering the Dynamics of Innovation (see references below) bing bong DC-3 Peter Senge book The Fifth Discipline on p. 6 cited the DC-3 as a dominant design consisting of variable-pitch propeller, retractable landing gear, monocoque, radial air-cooled engine, and wing flaps.
After revision: Many industry examples are included in Utterback's book Mastering the Dynamics of Innovation (see references below) egr277 students stay away DC-3 Peter Senge book The Fifth Discipline on p. 6 cited the DC-3 as a dominant design consisting of variable-pitch propeller, retractable landing gear, monocoque, radial air-cooled engine, and wing flaps.