rotor blade
31blade droop — The angle between the spanwise axis of rotor blades and the plane of rotation of the blades perpendicular to the rotor shaft when the rotor blades are not rotating and only forces of gravity are acting on it …
32blade grips — That part of a helicopter rotor hub into which the blades are attached by a lead lag hinge pin. Blade grips also called blade forks …
33rotor — noun Rotor is used before these nouns: ↑blade …
34blade pitch angle — The angle between the chord of the blade and the reference line on the rotor hub …
35blade tracking — i. The process of determining the position of the tips of the propeller blades relative to each other. See blade track. ii. The mechanical procedure used to bring the blades of the rotor in satisfactory relationship with each other under dynamic… …
36blade sweeping — An adjustment of the dynamic chordwise balance in which a tip of one of the blades of a helicopter rotor is moved backward or forward in its plane of rotation by changing the length of its drag brace …
37rotor disc — The area contained within the tip path plane (i.e., the path described by the blade tips during their rotation) …
38blade loading — noun : the gross weight of a rotary wing aircraft divided by the total area of the rotor blades …
39Helicopter rotor — This article is about helicopter main rotor systems. For antitorque control, see tail rotor. Helicopter rotor The rotor head of a Sikorsky S 92 A helicopter main rotor or rotor system is a type of fan that is used to generate both the aerodynamic …
40Retreating blade stall — is a hazardous flight condition in helicopters and other rotary wing aircraft, where the rotor blade rotating away from the direction of flight stalls. The stall is due to low relative airspeed and/or excessive angle of attack (or AOA).… …
