Disc Area
The area swept by the blades of the rotor. This is a circle with its center at the hub axis and a radius of longest blade length.
Disc Loading ...
Disc Area. In a gyroplane or helicopter the area of the circle described by the tips of the blades.
Disc Loading. The product of the loaded (gross) weight of the gyroplane or helicopter divided by the disc area of its rotor.
 See also: Aeronaut, Force, Flight, Leading edge, Leading
  
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