Ryan NYP 425-Gallon Main Fuel Tank Internal Baffle Framework (Floor View) (1927)

Internal aluminum baffle framework of the 425-gallon main fuel tank standing on the Ryan workshop floor. — Ryan NYP 425-Gallon Main Fuel Tank Internal Baffle Framework (Floor View) (1927) · Donald A. Hall Estate Collection

An archival technical construction photograph showing the bare internal aluminum baffle skeleton of the 425-gallon main fuselage fuel tank standing vertically on the Ryan factory floor. The structure reveals a complex matrix of horizontal and vertical sheet baffles pierced with large circular flanged lightening holes engineered by Donald A. Hall to suppress dynamic fuel sloshing across 2,550 pounds of gasoline while ensuring rapid fluid equalization to the bottom sump.