公开(公告)号：AU673608B2

公开(公告)日：1996-11-14

申请号：AU6777894

申请日：1994-04-29

Applicant: UNITED TECHNOLOGIES CORP

Inventor： FLEMMING ROBERT J JR ,  ROSEN KENNETH M ,  SHEEHY THOMAS W

IPC: B64C27/20 ,  B64C27/26 ,  B64C39/02

Abstract: An unmanned aerial vehicle (UAV) having a toroidal fuselage and a rotor assembly including counter-rotating rotors coaxially mounted with respect to the toroidal fuselage incorporates ancillary aerodynamic structures aerodynamically configured and mounted in combination with the toroidal fuselage to provide a nose-down pitching moment to counteract the nose-up pitching moment generated by airflow over the toroidal fuselage during forward translational flight of the UAV. The ancillary aerodynamic structures have a cambered airfoil profile to provide high lifting forces. The ancillary aerodynamic structures may have centers of lift located significantly aft of the quarter-chord line of the airfoil, and are symmetrically mounted in combination with the lateral sides of the toroidal fuselage so that the centers of lift are located aftwardly of the fuselage axis of the toroidal fuselage in forward translational flight modes such that the ancillary aerodynamic structures generate a nose-down pitching moment to counteract the nose-up pitching moment due to airflow over the toroidal fuselage in forward translational flight. In a first embodiment, the ancillary aerodynamic structures are fixedly mounted in combination with the toroidal fuselage at a predetermined angle of incidence. In a second embodiment, the ancillary aerodynamic structures are rotatably mounted in combination with the toroidal fuselage to provide variable incidence ancillary aerodynamic structures for the UAV.

公开(公告)号：CA2042235C

公开(公告)日：1994-09-20

申请号：CA2042235

申请日：1991-05-09

Applicant: UNITED TECHNOLOGIES CORP

Inventor： CYCON JAMES P ,  ROSEN KENNETH M ,  WHYTE ANDREW C

IPC: B64C29/00 ,  B64C27/10 ,  B64C27/20 ,  B64C39/02 ,  B64C39/06 ,  B64C27/22

Abstract: An Unmanned Flight Vehicle Including Counter Rotating Rotors Positioned Within A Toroidal Shroud and Operable to Provide All Required Vehicle Flight Controls An unmanned flight vehicle wherein two counter-rotating rotors are positioned within a toroidal fuselage and in which rotor pitch solely is utilized to generate all required lift, pitch, roll, yaw and vibration and stress control for the vehicle.

公开(公告)号：AU6777894A

公开(公告)日：1994-12-12

申请号：AU6777894

申请日：1994-04-29

Applicant: UNITED TECHNOLOGIES CORP

Inventor： FLEMMING ROBERT J JR ,  ROSEN KENNETH M ,  SHEEHY THOMAS W

IPC: B64C27/20 ,  B64C27/26 ,  B64C39/02

Abstract: An unmanned aerial vehicle (UAV) having a toroidal fuselage and a rotor assembly including counter-rotating rotors coaxially mounted with respect to the toroidal fuselage incorporates ancillary aerodynamic structures aerodynamically configured and mounted in combination with the toroidal fuselage to provide a nose-down pitching moment to counteract the nose-up pitching moment generated by airflow over the toroidal fuselage during forward translational flight of the UAV. The ancillary aerodynamic structures have a cambered airfoil profile to provide high lifting forces. The ancillary aerodynamic structures may have centers of lift located significantly aft of the quarter-chord line of the airfoil, and are symmetrically mounted in combination with the lateral sides of the toroidal fuselage so that the centers of lift are located aftwardly of the fuselage axis of the toroidal fuselage in forward translational flight modes such that the ancillary aerodynamic structures generate a nose-down pitching moment to counteract the nose-up pitching moment due to airflow over the toroidal fuselage in forward translational flight. In a first embodiment, the ancillary aerodynamic structures are fixedly mounted in combination with the toroidal fuselage at a predetermined angle of incidence. In a second embodiment, the ancillary aerodynamic structures are rotatably mounted in combination with the toroidal fuselage to provide variable incidence ancillary aerodynamic structures for the UAV.

公开(公告)号：CA2161113A1

公开(公告)日：1994-11-24

申请号：CA2161113

申请日：1994-04-29

Applicant: UNITED TECHNOLOGIES CORP

Inventor： FLEMMING ROBERT J JR ,  ROSEN KENNETH M ,  SHEEHY THOMAS W

IPC: B64C27/20 ,  B64C27/26 ,  B64C39/02

Abstract: An unmanned aerial vehicle (UAV) (100) having a toroidal fuselage (120) and a rotor assembly (170) including counter-rotating rotors coaxially mounted with respect to the toroidal fuselage incorporates ancillary aerodynamic structures (18) having a cambered airfoil profile to provide a nose-down pitching moment to counteract the nose-up pitching moment generated by airflow over the toroidal fuselage during forward translational flight of the UAV The ancillary aerodynamic structures are symmetrically mounted in combination with the lateral sides of the toroidal fuselage so that the centers of lift are located aftwardly of the fuselage axis of the toroidal fuselage in forward translational flight modes. In a first embodiment, the ancillary aerodynamic structures (18) are fixedly mounted in combination with the toroidal fuselage (10) at a predetermined angle of incidence. In a second embodiment, the ancillary aerodynamic structures (19) are rotatably mounted in combination with the toroidal fuselage (10') to provide variable incidence ancillary aerodynamic structures for the UAV.