Invention Grant
- Patent Title: Method of blade fold for tiltrotor aircraft
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Application No.: US16030406Application Date: 2018-07-09
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Publication No.: US10858094B2Publication Date: 2020-12-08
- Inventor: Amarjit Kizhakkepat , Glenn Alan Shimek
- 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
- Agency: Shackelford, Bowen, McKinley & Norton, LLP
- Main IPC: B64C27/50
- IPC: B64C27/50 ; B64C29/00 ; B64C3/56

Abstract:
A method of blade fold for a tiltrotor aircraft includes configuring the tiltrotor aircraft in a flight ready position with a rotor system in an inverted-Y position, unlocking a first rotor blade of the rotor system to permit the first rotor blade to pivot relative to a yoke of the rotor system, restraining the first rotor blade to allow the first rotor blade to pivot relative to the yoke as the yoke is rotated, rotating the rotor system in a first direction so that the first rotor blade pivots closer to a second rotor blade, rotating the rotor system in a second direction to orient the rotor system into a modified inverted-Y position, unlocking a third rotor blade to allow the third rotor blade to pivot relative to the yoke as the yoke is rotated, and rotating the rotor system in the second direction so that the third rotor blade pivots closer to the second rotor blade.
Public/Granted literature
- US20200010183A1 METHOD OF BLADE FOLD FOR TILTROTOR AIRCRAFT Public/Granted day:2020-01-09
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