Developed from the OH-6A rotor system. Elastomeric lead-lag dampers used (2 per blade). Centrifugal loads are carried through a strap and load ring system. The rotor uses a rotating shaft/mast system with drive loads only through the rotating shaft and other loads through a stationary mast connected to the rotor via bearings.
Source: “YAH-64 Advanced Attack Helicopter Design”, John C. Dendy, Paper presented at the 31st Annual National Forum of the American Helicopter Society, May 1975
Main Rotor Characteristics |
Diameter:
|
14.63 m |
48.00 ft |
RPM:
|
|
Direction of Rotation:
|
Counterclockwise |
Hub Type:
|
Fully articulated |
Main Rotor Blade Characteristics |
Blade Construction:
|
Stainless steel multi-cell spar, composite TE |
Blade Chord:
|
0.533 m |
1.75 ft |
Blade Tip Geometry:
|
|
Blade Twist:
|
0.157 rad |
9.001 deg |
Number of Blades:
|
4 |
Main Rotor Derived Characteristics |
Disc Area:
|
168.10 m² |
1809.5 ft² |
Disc Loading:
|
|
Solidity:
|
0.0928 |
Main Rotor Blade Derived Characteristics |
Blade area per blade:
|
3.90 m² |
42.0 ft² |
Tip Speed:
|
|