Progress after the Guggenheim Competition
Safe personal airplane objectives have been defined as (Upson, 1942):
Figure 15.1 The 1929 Curtiss Tanager, with full-span slats and flaps, demonstrating a steep climb over a 35-foot obstacle. This airplane won the Guggenheim Safe Aircraft Competition. (From Pendray, The Guggenheim Medalists, 1929—1963)
Outstanding in vision, incapable of spinning, comparable with an automobile in simplicity of control, yet with unquestioned superiority of cross-country performance.
Upson gives as examples no fewer than seven personal airplane designs that by 1942 had tried for these objectives. Which designs were viable, which were not, and what additional tries were made?