Item 0996
DESIGN:
UniCopter ~ Rotor - Hub - ARR - LAYOUT (3)Overview:
Consists of a 'swash-ring' and a modified uniball.
See:
Drawing:
Notes:
Consider having pitch horn horizontal when collective is in hover. This will;
Have the linkages in their mean position during most of flight time (thrust => GW).
The pitch horn/link connection will not have to be so high and therefore there will be more clearance for the other rotor's blade. Ref. Rotor - Disk - Blade to Hub Clearance
May have to take 'V" angle from 18º to 20º and/ or spread rotors from 27" to 29" to have 2.5" thick blade at r ≈ 27" If the above does not work. Note also that the blades are not 2.5" thick at this radius.
Consider inserting spherical roller thrust bearing from the inside of the hub. This will negate the need for a second strong attachment to hold the centrifugal load.
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Last Revised: March 6, 2003