droop stop


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droop stop

A device to limit the downward vertical motion of helicopter rotor blades upon rotor shutdown.
References in periodicals archive ?
Most mechanics usually end up with busted knuckles and a damaged aluminum droop stop nut.
We've solved the problem with a tool made of flat rolled steel, NSN 9510-00-231-20901, that has teeth and a centered square hole for a torque wrench or a breaker bar For easy droop stop nut removal and installation.
WARNING: When AFCS computer power is cycled, trim is disengaged and an unguarded cyclic will allow the rotor arc to dip as low as four feet above the deck, prior to full control deflection, without pounding the droop stops.