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