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LINK-GEAR RETRACTABLE AIRCRAFT LANDING GEAR MECHANISM

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Link 3 turns about fixedjaxis A of the aircraft frame member. Link 2 is connected by turning pairs B and C to links 3 and 1. Link 1 with wheel a turns about fixed axis D of the aircraft frame. Link 4 is connected by turning pairs E and F to links 3 and 5. Link 5 turns about fixed axis G of the aircraft frame. Piston rod 7 of retracting cylinder 6 is connected by turning pair H to link 5. Cylinder 6 turns about fixed axis K of the aircraft frame. When piston rod 7 moves into retracting cylinder 6, links 1 and 5 are turned clockwise and link 3 counterclockwise, and the landing gear is retracted as shown by the dash lines. When the landing gear is lowered, links 2 and 3, and 4 and 5 are fixed in their extreme (dead centre) positions, forming a truss.
$1435$LG,AL$

Linked items
Documents: Lever mechanisms  [Streambook]
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