Symmetrical Frontal View of Elias XNBS-3 Bomber Wind-Tunnel Model (Circa 1923)

Symmetrical head-on frontal view of the Elias XNBS-3 wooden wind-tunnel bomber model detailing wing rigging and twin engine nacelles. — Symmetrical Frontal View of Elias XNBS-3 Bomber Wind-Tunnel Model (Circa 1923) · Donald A. Hall Estate Collection

A direct, symmetrical head-on frontal study of the carved wooden scale model of the Elias XNBS-3 twin-engine night bomber. Photographed by Donald A. Hall Sr. against a neutral backdrop, the perspective highlights the balanced span of the two-bay biplane wings, interplane struts, diagonal wire bracing, and twin Liberty engine nacelles flanking the slender central crew fuselage. Through the wings, the triple-fin directional control surfaces of the tailplane are visible, recording the complex multi-engine stability and structural load analyses Hall conducted in Buffalo before joining Douglas Aircraft.