Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Alastair D Moore0
Robert J Telling0
Date of Patent
May 21, 2024
0Patent Application Number
164232530
Date Filed
May 28, 2019
0Patent Citations
...
Patent Primary Examiner
Patent abstract
A gas turbine engine generates noise during use, and one particularly important flight condition for noise generation is take-off. A gas turbine engine is provided that has high efficiency together with low noise, in particular from the jet flow exiting the engine and the turbine. The combined contribution of the jet and the turbine to the Effective Perceived Noise Level (EPNL) at a take-off lateral reference point, defined as the point on a line parallel to and 450 m from the runway centre line where the EPNL is a maximum during take-off, is in the range of from 3 EPNdB and 15 EPNdB lower than the total engine EPNL at the take-off lateral reference point.
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