Helicopter blade folding with blade droop
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United States of America Patent
Stats
-
Aug 31, 2004
Grant Date -
N/A
app pub date -
Dec 12, 2002
filing date -
Dec 12, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Blade fold hinge units are attachable between each helicopter blade and its hub attachment point, while maintaining continuity of mechanical connection of each blade to its hub portion. A two portion hinge unit has a first portion for blade attachment and a second portion for hub attachment. The first and second portions are hinged via a transverse pin to enable blade drooping downward, before or after a blade is pivoted to an aft position for helicopter storage or shipment. Upon aft pivoting of a blade, undesired further pivoting or knuckling of the hinge unit relative to the hub is prevented by addition of a lock link. After blade folding, the blades may be suitably fixed in position adjacent the aft portion of the helicopter body.
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Cited Art Landscape
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