Dwayne Morrison

US Patent:

48818747, Nov 21, 1989

Filed:

Mar 31, 1988

Appl. No.:

7/175770

Inventors:

Billy P. White - Arlington TX
Dwayne E. Morrison - Rowlett TX

Assignee:

Bell Helicopter Textron Inc. - Fort Worth TX

International Classification:

B64C 2736

US Classification:

416138

Abstract:

A helicopter tail rotor (10, 130) includes a drive mast (12) having an axis of rotation (14). A first blade pair (20) is mounted for rotation about the drive mast (12). The first blade pair (20) includes a pitch change axis (54) perpendicularly disposed to the drive mast axis of rotation (14). A second blade pair (34) is mounted for rotation about the drive mast (12) and is spaced apart from and parallel disposed to the first blade pair (20). The second blade pair (34) includes a pitch change axis (60) parallel to the pitch change axis (54) of the first blade pair (20).