rotor disc

rotor disc

rotor disc
The area contained within the tip-path plane (i.e., the path described by the blade tips during their rotation).
References in periodicals archive ?
The report also said the helicopter's main rotor disc had struck a fir tree about 30ft below its top and that "the pilotmay have been attempting to arrest a rate of descent and was therefore trying to avoid the rising terrain".
The manufacturer indicates that the main rotor disc has a diameter of 15.
NDE low pressure rotors on nuclear power plants of EDF: control trees and low pressure rotor discs hooped for CP0 and CP1 bearings.
We were 8 to 10 rotor discs behind lead and had no trouble seeing them.