HSCT Sector Combustor Hardware Modifications for Improved Combustor … · 2013-04-10 · Stuart C....
Transcript of HSCT Sector Combustor Hardware Modifications for Improved Combustor … · 2013-04-10 · Stuart C....
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Stuart C. Greenfield, Paul V. Heberling, and George E. MoertleGeneral Electric Aircraft Engines, Cincinnati, Ohio
HSCT Sector Combustor HardwareModifications for Improved Combustor Design
NASA/CR—2005-213322
January 2005
https://ntrs.nasa.gov/search.jsp?R=20050061010 2020-03-02T21:32:49+00:00Z
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The NASA STI Program Office . . . in Profile
Since its founding, NASA has been dedicated tothe advancement of aeronautics and spacescience. The NASA Scientific and TechnicalInformation (STI) Program Office plays a key partin helping NASA maintain this important role.
The NASA STI Program Office is operated byLangley Research Center, the Lead Center forNASA’s scientific and technical information. TheNASA STI Program Office provides access to theNASA STI Database, the largest collection ofaeronautical and space science STI in the world.The Program Office is also NASA’s institutionalmechanism for disseminating the results of itsresearch and development activities. These resultsare published by NASA in the NASA STI ReportSeries, which includes the following report types:
• TECHNICAL PUBLICATION. Reports ofcompleted research or a major significantphase of research that present the results ofNASA programs and include extensive dataor theoretical analysis. Includes compilationsof significant scientific and technical data andinformation deemed to be of continuingreference value. NASA’s counterpart of peer-reviewed formal professional papers buthas less stringent limitations on manuscriptlength and extent of graphic presentations.
• TECHNICAL MEMORANDUM. Scientificand technical findings that are preliminary orof specialized interest, e.g., quick releasereports, working papers, and bibliographiesthat contain minimal annotation. Does notcontain extensive analysis.
• CONTRACTOR REPORT. Scientific andtechnical findings by NASA-sponsoredcontractors and grantees.
• CONFERENCE PUBLICATION. Collectedpapers from scientific and technicalconferences, symposia, seminars, or othermeetings sponsored or cosponsored byNASA.
• SPECIAL PUBLICATION. Scientific,technical, or historical information fromNASA programs, projects, and missions,often concerned with subjects havingsubstantial public interest.
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Stuart C. Greenfield, Paul V. Heberling, and George E. MoertleGeneral Electric Aircraft Engines, Cincinnati, Ohio
HSCT Sector Combustor HardwareModifications for Improved Combustor Design
NASA/CR—2005-213322
January 2005
National Aeronautics andSpace Administration
Glenn Research Center
Prepared under Contract NAS3–26617
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Available from
NASA Center for Aerospace Information7121 Standard DriveHanover, MD 21076
National Technical Information Service5285 Port Royal RoadSpringfield, VA 22100
Available electronically at http://gltrs.grc.nasa.gov
Document History
This research was originally published internally as HSR030 in January 1996.
Note that at the time of writing, the NASA Lewis Research Centerwas undergoing a name change to the
NASA John H. Glenn Research Center at Lewis Field.Both names may appear in this report.
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HSCT Sector Combustor Hardware Modifications for ImprovedCombustor Design
Stuart C. Greenfield, Paul V. Heberling, and George E. Moertle
High speed civil transport; Lean premixed prevaporized (LPP) combustor; Integrated mixerflameholder (IMFH) tubes; Cyclone swirler pilot; NOx emissions
Unclassified -UnlimitedSubject Categories: 01, 05, and 07 Distribution: Nonstandard
General Electric Aircraft EnginesAdvanced Engineering Programs DepartmentOne Neumann WayCincinnati, Ohio 45215–6301
This research was originally published internally as HSR030 in January 1996. Responsible person, Diane Chapman,Ultra-Efficient Engine Technology Program Office, NASA Glenn Research Center, organization code PA,216–433–2309.
An alternative to the stepped-dome design for the lean premixed prevaporized (LPP) combustor has been developed.The new design uses the same premixer types as the stepped-dome design: integrated mixer flameholder (IMFH) tubesand a cyclone swirler pilot. The IMFH fuel system has been taken to a new level of development. Although the IMFHfuel system design developed in this Task is not intended to be engine-like hardware, it does have certain characteristicsof engine hardware, including separate fuel circuits for each of the fuel stages. The four main stage fuel circuits areintegrated into a single system which can be withdrawn from the combustor as a unit. Additionally, two new types ofliner cooling have been designed. The resulting lean blowout data was found to correlate well with the Lefebvreparameter. As expected, CO and unburned hydrocarbons emissions were shown to have an approximately linearrelationship, even though some scatter was present in the data, and the CO versus flame temperature data showed thetypical cupped shape. Finally, the NOx emissions data was shown to agree well with a previously developed correlationbased on emissions data from Configuration 3 tests performed at GEAE. The design variations of the cyclone swirlerpilot that were investigated in this study did not significantly change the NOx emissions from the baseline design(GEAE Configuration 3) at supersonic cruise conditions.
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