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US Patent 11629667 Geared gas turbine engine

Patent 11629667 was granted and assigned to Rolls-Royce on April, 2023 by the United States Patent and Trademark Office.

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Patent Applicant

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Robert J Telling0

Alastair D Moore0

Date of Patent

April 18, 2023

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Patent Application Number

171933170

Date Filed

March 5, 2021

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Patent Citations

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US Patent 10814990 Aircraft propulsion system with a low-fan-pressure-ratio engine in a forward over-wing flow installation, and method of installing the same

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US Patent 10975802 Geared gas turbine engine

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Patent Primary Examiner

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CPC Code

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F05D 2260/40311

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A gas turbine engine generates noise during use, and one particularly important flight condition for noise generation is take-off. A gas turbine engine that has high efficiency provides low noise, in particular from the fan and the turbine that drives the fan. Values are defined for a noise parameter NP that results in a gas turbine engine having reduced combined fan and turbine noise.

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