1. Balancing lift across the rotor disc is important to a helicopter's stability. 2. Horizontal aluminum rotor disc is visible in center of meter ]] 3. More recently, large-rotor disc brakes are being used as drag brakes. 4. Recovery is complete when the rotor disc reaches the upwind part of the vortex. 5. Vaseline was used to lubricate the rotor disc contacts. 6. In a retreating-blade stall, however, only the retreating half of the helicopter's rotor disc experiences a stall. 7. In March, the FAA directed airlines to inspect such engines for possible cracks in turbine rotor discs . 8. During vertical autorotation, the rotor disc is divided into three regions the driven region, the driving region, and the stall region. 9. A main rotor blade was either observed to separate or was seen separated in the vicinity of the main rotor disc . 10. Collective pitch varies the magnitude of rotor thrust by increasing or decreasing thrust over the whole rotor disc at the same time.
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