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Donald A. Hall Estate Collection

Tanim Wing Concept Model (1927)

A side profile of a wooden tandem wing aircraft model with a forward and rear wing, resting on a rooftop.
Tanim Wing Concept Model (1927) · Donald A. Hall Estate Collection

This 1927 photograph highlights the side profile of Donald A. Hall Sr.'s radical tandem wing concept. Designed for extensive wind tunnel testing, this innovative dual-wing configuration garnered national attention in Popular Mechanics and eventually earned the Chief Engineer a patent in 1933.