Method and system of automatic warnings and guidance for avoiding loss of tail rotor effectiveness on a rotorcraft
AssigneeHoneywell International Inc.
InventorsMurali Mohan Talapureddi, Michael Popescu
Life of this patent
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Abstract
A method for responding to loss of tail rotor effectiveness (LTE) on a rotorcraft having a tail rotor includes detecting an actual or predicted LTE, and determining a lateral LTE area relative to a position of the rotorcraft that is associated with the LTE. In response to the determination of the lateral LTE area, the method automatically displays an LTE alert on a horizontal display that indicates a location of the lateral LTE area relative to the position of the rotorcraft, and automatically indicates on the horizontal display a direction from the position of the rotorcraft that the rotorcraft should move to avoid the lateral LTE area.
Claims20
A method for responding to loss of tail rotor effectiveness (LTE) on a rotorcraft having a tail rotor, the method comprising:
- detecting an actual or predicted LTE;
- determining a lateral LTE area in the air and offset to a lateral side of a position of the rotorcraft that indicates which side of the rotorcraft will maintain the LTE;
- and
- in response to the determination of the lateral LTE area, automatically displaying an LTE alert on a horizontal display that indicates an offset side location of the lateral LTE area relative to the position of the rotorcraft, and automatically displaying on the horizontal display, a graphical indicator of a direction from the position of the rotorcraft that the rotorcraft should move to avoid the lateral LTE area and that is distinct from display of the LTE alert.
A rotorcraft, comprising:
- a body having a cockpit with a horizontal situation indicator display;
- at least one main rotor and a tail rotor interconnected to the body, wherein the tail rotor rotates in a direction transverse to the rotation of the main rotor;
- and
- processor circuitry forming at least one processor communicatively coupled to the display and being arranged to operate by:
- detecting an actual or predicted loss of tail rotor effectiveness (LTE),
- determining a lateral LTE area in the air and offset to a lateral side of the rotorcraft that indicates which side of the rotorcraft will maintain the LTE, and
- in response to the determination of the lateral LTE area, automatically displaying an LTE alert on a horizontal display that indicates an offset side location of the lateral LTE area relative to a position of the rotorcraft, and automatically displaying on the horizontal display, a graphical indicator of a direction from the position of the rotorcraft that the rotorcraft should move to avoid the lateral LTE area and that is distinct from the display of the LTE alert.
A system, comprising:
- a horizontal display on a rotorcraft;
- and
- processor circuitry forming at least one processor communicatively coupled to the display and arranged to operate by:
- detecting an actual or predicted LTE,
- determining a lateral LTE area in the air and offset to a lateral side of a position of the rotorcraft that indicates which side of the rotorcraft will maintain the LTE;
- and
- in response to the determination of the lateral LTE area, automatically displaying an LTE alert on a horizontal display that indicates an offset side location of the lateral LTE area relative to the position of the rotorcraft, and automatically displaying on the horizontal display, a graphical indicator of a direction from the position of the rotorcraft that the rotorcraft should move to avoid the lateral LTE area and that is distinct from the display of the LTE alert.
Dependencies are inferred from the claim text.