Plasma-Assisted Active Combustion Control as an Enabling Technology for N+3 Combustors, Phase I

Metadata Updated: February 28, 2019

This proposal will develop a [HTML_REMOVED]plasma-assisted modification to a lean direct injected[HTML_REMOVED][HTML_REMOVED](LDI)[HTML_REMOVED]combustor to control combustion instabilities and enable clean, compact combustion.[HTML_REMOVED] Controlling combustion dynamics in jet engine combustors continues to be a major challenge especially in advanced engine designs where, due to leaner flames, less cooling air and more turbulent injectors, there is a higher potential for damaging combustion dynamics.turbine. Various active combustion control methods have been demonstrated for improving combustion stability in[HTML_REMOVED]jet engines but they have not found wide-spread commercial use.

[HTML_REMOVED]Moreover, plasma has been shown to be a promising tool for improving flame stabilization.[HTML_REMOVED] The rapid actuation time and authority of plasma discharges also make plasma an attractive actuator for active combustion control. Plasma can both improve both static stability via kinetic enhancement of reaction pathways and dynamic stability, especially if configured in a closed-loop configuration. Plasmas have already been demonstrated in literature to have positive effects on combustion dynamics. However, further work is necessary to understand the dynamics of flame response to plasma[HTML_REMOVED]s, particularly at realistic conditions.[HTML_REMOVED]To this end, this proposal will use explore a novel method of using plasma as an active control actuator in an LDI combustor to enable reduced emissions and operation at conditions which would have otherwise been unstable. This combustor and its control system will be characterized both at atmospheric pressure as well as at high pressure and high temperature conditions representative of idle and sub idle in a modern jet engine.[HTML_REMOVED]Various optical and acoustic diagnostics will be used to quantify the effectiveness of the plasma-assisted control system.[HTML_REMOVED]If this work is successful, it will significantly de-risk the technology and enable partnerships with major engine manufacturers to bring this technology to market.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date February 28, 2019
Metadata Updated Date February 28, 2019

Metadata Source

Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date February 28, 2019
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_94707
Maintainer Email
Public Access Level public
Bureau Code 026:00
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Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 173cc21e-162c-4c35-8e31-1aba31a58f02
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2019-01-01
Homepage URL
Data Last Modified 2018-09-07
Program Code 026:027
Source Datajson Identifier True
Source Hash 81c39179cbbade12790bd4001d38f77b86d37f24
Source Schema Version 1.1

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