The H-13’s most iconic role was as a medical evacuation (MEDEVAC) bird—famously featured as such in the opening credits of ...

The same engine drives both the main and tail rotor ... farther than 20 miles from the front lines. The job of the Bell 47 helicopters was to evacuate wounded from the battalion aid stations ...

Early helicopters required pilots to manually synchronize engine RPM with both main rotor ... aircraft's design and control systems. The Bell Model 47 would go on to revolutionize civilian ...