Vintage Aviation News on MSN
Today in aviation history: First flight of the Sikorsky S-52
On February 12, 1947, the Sikorsky S-52 made its first flight, introducing all-metal rotor blades and setting early speed and ...
The number of blades a helicopter has is very important because it speaks to what the helicopter was designed to do. For example, adding more blades can significantly improve a helicopter's ...
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