PROPELLER ASSEMBLY AND PITCH CONTROL UNIT

A variable pitch propeller assembly operatively coupled with an engine and methods for controlling the pitch of a plurality of propeller blades thereof is provided. In one example aspect, the variable pitch propeller assembly includes features for combining overspeed, feathering, and reverse functio...

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Bibliographic Details
Main Authors Castellani, Simone, Manzoni, Miriam, Bellocchio, Giuseppe, Jirasek, Vojtech, Cervelli, Giuseppe
Format Patent
LanguageEnglish
Published 06.04.2023
Subjects
AEROPLANES
AIRCRAFT
AVIATION
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
COSMONAUTICS
HEATING
HELICOPTERS
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
TRANSPORTING
WEAPONS
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Summary:A variable pitch propeller assembly operatively coupled with an engine and methods for controlling the pitch of a plurality of propeller blades thereof is provided. In one example aspect, the variable pitch propeller assembly includes features for combining overspeed, feathering, and reverse functionality in a single secondary control valve. The secondary control valve is operable to selectively allow a controlled amount of hydraulic fluid to flow to or from a pitch actuation assembly such that the pitch of the propeller blades can be adjusted to operate the variable pitch propeller assembly in one of a constant speed mode, a feather mode, and a reverse mode.
Bibliography:Application Number: US202218061852