advancing blade

advancing blade

advancing blade
In a translational flight, the rotor blade moving forward into the relative airflow (i.e., it is moving in the same direction as the helicopter). Each blade advances through 180° of its travel, normally from dead-astern to dead-ahead. In the case of clock-wise-rotating rotors, the advancing blade will be in the left half of the rotor disc when the helicopter is moving forward; if moving backward, it will be in the right half. If moving sideward to the left, it will be in the rear half; and if moving sideward to the right, it will be in the forward half.
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Just a few steps were sufficient to take him to the arc of the propeller and immediately the back of his high-visibility jacket was caught by an advancing blade.
Sikorsky reports that its X2 advancing blade concept technology demonstrator has achieved 168kt (311km/h) forward speed, putting the dual counter-rotating pusher-prop compound beyond the typical maximum speed for traditional helicopters and outside the reach of the company's S-76 chase vehicle's 155kt capability.
This is another proof point of the success of the 'Blade Alliance Partnership' which was established to increase customer benefits while advancing blade technology.
Sikorsky Aircraft Sikorsky reports that its X2 advancing blade concept technology demonstrator has achieved 168kt (311km/h) forward speed, putting the dual counter-rotating pusher-prop compound beyond the typical maximum speed for traditional helicopters and outside the reach of the company's S-76 chase vehicle's 155kt capability.

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