Ryan NYP Aerodynamic Performance: Power Required vs. Airspeed (1927)

Technical graph plotting horsepower required and rate of climb against indicated airspeed in mph. — Ryan NYP Aerodynamic Performance: Power Required vs. Airspeed (1927) · Donald A. Hall Estate Collection

An archival engineering calculation graph from the Donald A. Hall Estate Collection plotting brake horsepower required against indicated airspeed in miles per hour. Plotted across varying gross weight increments, the chart defines the aerodynamic drag polar and rate of climb boundaries for the Ryan NYP monoplane, documenting Hall's structural and aerodynamic optimization of the high-aspect-ratio wing.