| 21. | At near shutoff, where the swirl is very high, " rotating blade stall " of the fan blades occurs.
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| 22. | He plans to use the centrifugal force generated by the rotating blades to pump water droplets into the atmosphere.
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| 23. | Myers suggested that heavy dust clouds created by the chopper's rotating blades during a landing probably have caused the crash.
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| 24. | Early helicopters vibrated up and down quite a bit even with a rotating blade rather than this up and down blade.
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| 25. | Soldiers grabbed children in each arm and carried them into the helicopter through the fierce wind kicked up by rotating blades.
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| 26. | In mechanically aided scrubbers, the majority of particle collection occurs in the liquid droplets formed by the rotating blades or rotor.
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| 27. | These machines have two sets of 8-foot-wide rotating blades, so that they resemble a pair of huge electric shavers clamped together.
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| 28. | The company makes proprietary wind turbines which are powered with counter-rotating blades that use 2 blades on each side that counter-rotate.
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| 29. | In a conventional helicopter, the rotating blades provide enough lift to give the crew a chance to land, even after engine failure.
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| 30. | Guidant's device uses a rotating blade to slice off and remove the plaque after a balloon at its tip is partially inflation.
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