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Donald A. Hall Estate Collection

Sleek Wind Tunnel Model (1927)

A side profile of a sleek, dark wooden model aircraft resting on a flat surface.
Sleek Wind Tunnel Model (1927) · Donald A. Hall Estate Collection

Continuing his series of aerodynamic test articles, this 1927 photograph shows another of Donald A. Hall Sr.'s sleek wooden wind tunnel models, demonstrating his relentless pursuit of aerodynamic efficiency. This was meant to be a exceptionaly fast gull wing aircraft yet was never built.