Invention Grant
- Patent Title: Windmill and negative-G oil system for geared turbofan engines
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Application No.: US15132639Application Date: 2016-04-19
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Publication No.: US10578017B2Publication Date: 2020-03-03
- Inventor: William G. Sheridan
- Applicant: United Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: United Technologies Corporation
- Current Assignee: United Technologies Corporation
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds, P.C.
- Main IPC: F02C7/06
- IPC: F02C7/06 ; F01D25/20 ; F16H57/04 ; F01M11/06 ; F01D5/02 ; F02C3/107 ; F02K3/04 ; F04D29/32 ; F01M1/02

Abstract:
A lubrication system for a gear system of a geared turbofan engine, the lubrication system includes an upper strut including an upper sump. A lower strut includes a lower sump. The upper strut and the lower strut support a gear system. A conduit extends from the upper sump within the upper strut to the lower sump within the lower strut. A lubricant collector receives lubricant exhausted from the gear system and directing the received lubricant into one of the lower sump and the upper sump. A pump in communication with the conduit for drawing lubricant from at least one of the lower sump and the upper sump and communicates lubricant to a lubricant inlet of the gear system. The pump draws lubricant from the lower sump when operating within a positive g-force environment and draws lubricant from the upper sump when operating within a negative g-force environment. A geared turbofan engine is also disclosed.
Public/Granted literature
- US20160376988A1 WINDMILL AND NEGATIVE-G OIL SYSTEM FOR GEARED TURBOFAN ENGINES Public/Granted day:2016-12-29
Information query
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