Method and arrangement for propeller pitch control
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United States of America Patent
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Jul 15, 2014
Grant Date -
Aug 18, 2011
app pub date -
Oct 12, 2009
filing date -
Oct 16, 2008
priority date (Note) -
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Abstract
This invention relates to a method and a Propeller Pitch Control Arrangement, comprising a propeller hub (1) having a number of interface fittings (10) for adjustable pitch positioning of a propeller blade, a positioning device (3), within said hub (1), having a number of propeller control interfaces (34) and an actuator arrangement (2, 4, 55) arranged to move and position said positioning device (3) to enable varying pitch for said propeller blades, characterized in—that said actuator arrangement includes a rotatable shaft (2) with threads (20) interacting with mating threads (30) at said positioning device (3), and,—that said rotatable shaft (2) is driven by a motor device (4, 5) positioned adjacent said hub (1).
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