Rotorcraft with a tail boom and an integral stabilizer arrangement
AssigneeAirbus Helicopters Deutschland GmbH
InventorsRupert Pfaller, Tobias Ries
Life of this patent
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Abstract
A rotorcraft with at least one main rotor and a fuselage, comprising: a tail boom connected to the fuselage, the tail boom extending in a longitudinal direction from the fuselage toward a duct-type portion; a shroud provided at the duct-type portion and forming a transverse duct comprising an air inlet region and an air outlet region; the transverse duct having a longitudinal extension; at least one ducted tail rotor rotatably arranged in the transverse duct; and an integral stabilizer arrangement mounted to the shroud, the integral stabilizer arrangement being embodied in box configuration and arranged laterally on a side of the shroud on which the air inlet region of the transverse duct is arranged.
Claims20
A rotorcraft with at least one main rotor and a fuselage, comprising:
- a tail boom connected to the fuselage, the tail boom extending in a longitudinal direction from the fuselage;
- a shroud rigidly secured to the tail boom and forming a transverse duct forming an air inlet region and an air outlet region, the transverse duct comprising a circumferential direction and a longitudinal extension oriented at least essentially perpendicular to the circumferential direction and at least essentially perpendicular to the longitudinal direction of the tail boom;
- at least one ducted tail rotor positioned to rotate in the transverse duct;
- and
- an integral stabilizer arrangement formed integrally with the shroud, the integral stabilizer arrangement having a box configuration extending laterally from a side of the shroud on which the air inlet region of the transverse duct is arranged.
A rotorcraft with at least one main rotor and a fuselage, comprising:
- a tail boom extending rearwardly in a longitudinal direction from the fuselage;
- a shroud forming a duct mounted to a rear end of the tail boom, the duct extending transverse to the longitudinal direction with an air inlet on a first lateral side and an air outlet on a second lateral side;
- a counter-torque tail rotor rotatably arranged in the duct;
- and
- a one-sided stabilizer extending laterally from one of the first lateral side or second lateral side of the shroud, the one-sided stabilizer comprising:
- a vertical stabilizer segment integrally formed with the shroud,
- at least one horizontal stabilizer segment extending from the shroud, and
- a connecting strut connected to the at least one horizonal segment to form an open box configuration.
A rotorcraft with at least one main rotor and a fuselage, comprising:
- a tail boom extending rearwardly in a longitudinal direction from the fuselage;
- a shroud forming a duct mounted to a rear end of the tail boom, the duct extending transverse to the longitudinal direction with an air inlet on a first lateral side and an air outlet on a second lateral side;
- a counter-torque tail rotor rotatably arranged in the duct;
- and
- a one-sided stabilizer integrally formed with the shroud extending laterally from only the first lateral side adjacent the air inlet, the one-sided stabilizer having at least three stabilizer segments that form an open box configuration,
- wherein the at least three stabilizer segments each have an aerodynamic profile and are positioned behind the central axis of the duct to avoid blockage of airflow.
Dependencies are inferred from the claim text.