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Tandem-rotor helicopter lifting a log Helicopter pruning. Heli-logging, or helicopter logging, is a method of logging that uses helicopters to remove cut trees from forests by lifting them on cables attached to a helicopter. [1] Helicopter logging is often used in inaccessible areas of forests. Because the use of helicopters reduces the level ...
An example of two-blade rotor is the Bell 212, and four blade version of this helicopter is the Bell 412. [23] An example of the effect of rotor blade number is the UH-72 ( EC145 variant ); the A model had four blades, but the UH-72B was changed to five blades which reduced vibration. [ 24 ]
A ten-blade saw demonstrated by FirstEnergy in 2017. An aerial saw is a saw which is flown through the air. The aerial saw may also be known as a helicopter aerial saw.. Large aerial saws are flown by helicopter to trim trees in remote locations when they overgrow power lines, pipelines or other infrastructure.
However, when the helicopter starts to move forward its speed is added to the speed of the blades as they advance towards the front of the aircraft, and subtracted as they retreat. For instance, if the helicopter is flying forward at 100 km/h, the advancing blades see 300 + 100 km/h = 400 km/h, and for the retreating ones its 300 – 100 km/h ...
A blade inspection method is the practice of monitoring the condition of a blade, such as a helicopter's rotor blade, for deterioration or damage. A common area of focus in the aviation industry has been the detection of cracking, which is commonly associated with fatigue. Automated blade condition monitoring technology has been developed for ...
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The Airbus Helicopters H160 with the new Blue Edge rotor design.. Blue Edge is an advanced design of rotor blade developed and produced by multinational helicopter manufacturer Airbus Helicopters in cooperation with the French aerospace laboratory ONERA and the German Aerospace Center, purposed to achieve a meaningful reduction in both noise emissions and vibration as well as enhancement in ...
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