Differential blade design for propeller noise reduction

Differential blade design for propeller noise reduction

A propeller is provided including a hub and a first blade group and a second blade group. The first blade group includes at least one first propeller blade and the second blade group includes at least one second propeller blade. The at least one first propeller blade and the at least one second prop...

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Hauptverfasser: Henze Chad M, Schlinker Robert Hans, Shannon Daniel W
Format: Patent
Sprache:eng
Schlagworte:
AEROPLANES
AIRCRAFT
AVIATION
BLASTING
COSMONAUTICS
ENGINE PLANTS IN GENERAL
HEATING
HELICOPTERS
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
PERFORMING OPERATIONS
STEAM ENGINES
TRANSPORTING
WEAPONS
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creator Henze Chad M
Schlinker Robert Hans
Shannon Daniel W
description A propeller is provided including a hub and a first blade group and a second blade group. The first blade group includes at least one first propeller blade and the second blade group includes at least one second propeller blade. The at least one first propeller blade and the at least one second propeller blade are mounted to and equidistantly spaced about the hub. The at least one first propeller blade of the first blade group has at least one geometric characteristic different from the at least one propeller blade of the second blade group. The different blade groups will generate different noise signatures over a wider range of frequencies allowing for the design of low noise propeller systems.
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subjects AEROPLANES
AIRCRAFT
AVIATION
BLASTING
COSMONAUTICS
ENGINE PLANTS IN GENERAL
HEATING
HELICOPTERS
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
PERFORMING OPERATIONS
STEAM ENGINES
TRANSPORTING
WEAPONS
title Differential blade design for propeller noise reduction
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