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Sherlock Holmes here.... Look at the shadow on the cowling. It looks as if the break was 6-8 inches from the hub root.
I did a Parabolic calculation for a perfect projectile, and the range was about 6.3 km in 36 seconds (starting at 250m/s at 45deg.). However this blade would have been spinning and tumbling, so the variable aerodynamic forces would severely reduce the range. If during one of its tumbles, it went leading edge first, then the lift created by its 'wing section' would dramatically change the direction of the trajectory.
Use the Peak Height, Range and Time of Flight Calculator at....
Trajectories
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