Invention Grant
- Patent Title: Gas turbine engine with low fan noise
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Application No.: US14761689Application Date: 2014-03-11
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Publication No.: US10704415B2Publication Date: 2020-07-07
- Inventor: Bruce L. Morin , Wesley K. Lord
- Applicant: UNITED TECHNOLOGIES CORPORATION
- Applicant Address: US CT Farmington
- Assignee: RAYTHEON TECHNOLOGIES CORPORATION
- Current Assignee: RAYTHEON TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- International Application: PCT/US2014/023392 WO 20140311
- International Announcement: WO2014/150489 WO 20140925
- Main IPC: F01D25/04
- IPC: F01D25/04 ; F01D5/02 ; F01D5/14 ; F01D9/02 ; F02K1/15 ; F02K1/16 ; F01D17/14

Abstract:
In accordance with one aspect of the disclosure, a gas turbine engine, method of using and designing such is disclosed. The gas turbine engine may comprise a fan including a plurality of blades, and a variable area fan nozzle. The fan may be configured to have a design point fan tip leading edge relative flow angle βADP, and may be further configured to have an off-design point fan tip leading edge relative flow angle β at an off-design fan operating point. The variable area fan nozzle may be configured to manipulate the amount of air flowing through the fan so that the absolute value of a difference between the design point fan tip leading edge relative flow angle βADP and the off-design point fan tip leading edge relative flow angle β is in a specified range.
Public/Granted literature
- US10526914B2 Gas turbine engine with low fan noise Public/Granted day:2020-01-07
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