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Effects of fluidic control of air-flow distribution on staged lean engine burner

Yoshida, Seiji and Schneider, Denis and Hassa, Christoph (2016) Effects of fluidic control of air-flow distribution on staged lean engine burner. In: Proceedings of the ASME Turbo Expo. ASME Turbo Expo, 2016-06-13 - 2016-06-17, Korea.

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In this study, the effects of air-flow shifting between the pilot and main stages of a staged lean jet engine burner were investigated. A fluidic element attached in front of the swirlers was used to alter the air-flow split ratio between them, and the swirler and nozzle exit-section pressure loss behind the fluidic element was measured using an atmospheric isothermal test. The fluidic element did not fully recover the pressure loss in the burner inlet. However, it can also affect the losses, and cause an air shift between the pilot and main stage. Therefore, further combustion tests were conducted under two operating conditions: ground idle at 7% maximum take-off thrust and scaled cruise condition. Under ground idle conditions, increased pilot air flow improved the combustion efficiency for high fuel flow, and reduced pilot air flow improved it for low fuel flow. Staged and unstaged operations were also investigated under cruise conditions. In the staged operation, reduced pilot air flow increased the combustion efficiency, whereas in the unstaged operation, greater pilot air flow increased the combustion efficiency near the fueling mode switch-over point.

Item URL in elib:https://elib.dlr.de/105779/
Document Type:Conference or Workshop Item (Speech)
Title:Effects of fluidic control of air-flow distribution on staged lean engine burner
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:June 2016
Journal or Publication Title:Proceedings of the ASME Turbo Expo
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Fluidic Control, Jet Engine, Staged Combustion
Event Title:ASME Turbo Expo
Event Location:Korea
Event Type:international Conference
Event Start Date:13 June 2016
Event End Date:17 June 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Combustion Chamber Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Combustor
Deposited By: Hassa, Dr.-Ing. Christoph
Deposited On:20 Dec 2016 11:36
Last Modified:24 Apr 2024 20:10

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