Mechanism for operating a cascade of variable pitch vanes
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United States of America Patent
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-
Jan 23, 1996
Grant Date -
N/A
app pub date -
Jun 6, 1994
filing date -
Jun 6, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a V/STOL aircraft having a vectorable exhaust device in the form of a cascade of variable pitch nozzle vanes, an operating mechanism for effecting coordinated pivotal movement of the vanes is provided to vector engine thrust. The operating mechanism includes a plurality of elongate pushrods arranged in end to end abutment with a corresponding plurality of vane operating levers interspaced between the pushrods. The vanes are rotated about spanwise axes by translation of the pushrods in a direction normal to the vane axes. For a given actuating input the vanes rotate by progressively different amounts so that the combined nozzle throat area remains substantially unchanged throughout the nozzle vectoring range.
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