Invention Grant
US09193450B2 System and method for automation of rotorcraft entry into autorotation and maintenance of stabilized autorotation
有权
旋翼航空器自动化的自动化系统和方法进入自动调整和维护稳定自转
- Patent Title: System and method for automation of rotorcraft entry into autorotation and maintenance of stabilized autorotation
- Patent Title (中): 旋翼航空器自动化的自动化系统和方法进入自动调整和维护稳定自转
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Application No.: US13767188Application Date: 2013-02-14
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Publication No.: US09193450B2Publication Date: 2015-11-24
- Inventor: Robert Earl Worsham, II , John Joseph Schillings , Charles Eric Covington
- Applicant: Bell Helicopter Textron Inc.
- Applicant Address: US TX Fort Worth
- Assignee: Bell Helicopter Textron Inc.
- Current Assignee: Bell Helicopter Textron Inc.
- Current Assignee Address: US TX Fort Worth
- Agent Noah A. Tevis
- Main IPC: B64C27/00
- IPC: B64C27/00 ; B64C27/04 ; B64C27/57 ; G05D1/08

Abstract:
The system is configured for automation of rotorcraft entry into autorotation. The system can provide a means to assist the flight crew of a rotorcraft in maintaining rotor speed following loss of engine power. The system can automatically adjust control positions, actuator positions or both to prevent excessive loss of rotor speed upon initial loss of engine power before the flight crew is able to react. The system uses model matching to provide axis decoupling and yaw anticipation; it includes pitch control initially to assist in preventing rotor deceleration; and it makes use of collective, pitch, roll and yaw trim functions to provide tactile cueing to the pilot to assist when the pilot is in the loop. The system can reduce workload by assisting the crew with controlling rotor speed and forward speed during stabilized autorotation.
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