Propeller Aeroplanes

The scimitar propeller blades on the Antonov An-70 resemble an exotic flower. Each of the four propfan engines on the An-70 has two counter-rotating propellers with 6 and 8 blades. These allow the 'plane to achieve almost turbofan engined speed, but with much better fuel economy.

What a pleasure it would be to see these aeroplanes flying into San Francisco through the Golden Gate.