Sector Rig Test of a Ceramic Matrix Composite (CMC) Combustor Liner

Vedula, Venkat; Shi, Junguo; Liu, Songqi; Jarmon, D. C.

doi:10.1115/gt2006-90341

Cited by 5 publications

(2 citation statements)

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“…In the past, there had been a number of approaches to develop and test non‐oxide CMC combustors for aero‐engine applications. For lower engine pressure ratios the CMC combustors were designed to run without any active cooling film 8,9 . With the anticipated gas temperatures in future fuel efficient and high overall pressure ratio engines, for example, General Electric GE9X, 10 even high temperature CMCs may have to rely on active cooling films 11 .…”

Section: Introductionmentioning

confidence: 99%

“…For lower engine pressure ratios the CMC combustors were designed to run without any active cooling film. 8,9 With the anticipated gas temperatures in future fuel efficient and high overall pressure ratio engines, for example, General Electric GE9X, 10 even high temperature CMCs may have to rely on active cooling films. 11 Experimental investigations with an effusion-cooled five-sector CMC combustor are reported in Ref.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of preparation and combustion rig tests of an effusive cooled SiC/SiCN panel

Hönig

Süß

Jain

et al. 2020

Int J Applied Ceramic Tech

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SiC/SiCN ceramic matrix composites (CMCs) are promising candidates for components of aero‐engines. To evaluate the properties of these CMCs under realistic conditions, a quasi‐flat panel with effusion cooling holes was investigated in a high pressure combustor rig. A Tyranno SA3 fabric‐based SiC/SiCN composite with high strength and strain to failure was manufactured via polymer infiltration and pyrolysis process. Due to its weak matrix no fiber coating was necessary for damage tolerant behavior. The cooling holes in the panel were introduced via laser drilling. An outer coating of CVD‐based SiC was finally applied for enhanced oxidation resistance. The specimen was tested in the combustor rig and the cooling effectiveness was evaluated. The microstructure of laser machined holes was studied via microscopy and energy‐dispersive X‐ray spectroscopy. The macrostructure was investigated via computing tomography scans before and after the combustor test. Material performances at higher temperatures were estimated via a material performance index. Local microstructure modifications were observed after laser drilling. No crack formation was observed in the CMC panels after rig tests. The measured global cooling effectiveness of 0.76 and the analytical performance evaluation demonstrate the potential benefit of SiC/SiCN materials in combustor applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of preparation and combustion rig tests of an effusive cooled SiC/SiCN panel

Hönig

Süß

Jain

et al. 2020

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

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FT8-3 Advanced Low Emissions Combustor Design

Reddy

Blanchard

Schlein³

2011

Journal of Engineering for Gas Turbines and Power

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developed a novel water-injected industrial gas turbine combustor liner design that has demonstrated significant reduction in CO emissions when compared with typical film-cooled combustor designs. The CO reduction demonstrated in a prototype test shows that the CO quenching due to cooler film temperatures near the liner wall is a significant source of CO emissions in a conventional water-injected combustor operating on natural gas fuel. This finding paved the way for a combu.stor design that reduces CO emissions while still maintaining low levels of NO,, emissions. This design also has potential for lower NO^ since the low CO emissions characteristic enables increased water injection. This paper presents the emissions characteristic measured on prototype hardware and the design of the engine hardware for future validation. Significant reduction in gaseous emissions was demonstrated with the testing of a prototype at the United Technologies Research Center in East Hartford, CT. This reduction in emissions compared with the baseline film-cooled design for a given operating condition has many benefits to the customer, including the reduced need for exhaust cataly.it cleanup and extended operating times while still meeting site permits specified in CO tons per year. Other benefits may include the ability to guarantee lower NO^ emissions through increased water injection for the current CO emissions output.

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Development and Test of Oxide/Oxide Ceramic Matrix Composites Combustor Liner Demonstrators for Aero-engines

Behrendt

Hackemann

Mechnich

et al. 2016

Journal of Engineering for Gas Turbines and Power

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Ceramic matrix composites (CMC) offer the potential of increased service temperatures and are thus an interesting alternative to conventional combustor alloys. Tubular combustor liner demonstrators made of an oxide/oxide CMC were developed for a lean combustor in a future aero-engine in the medium thrust range and tested at engine conditions. During the design, various aspects like protective coating, thermomechanical design, and development of a failure model for the CMC as well as design and test of an attachment system were taken into account. The tests of the two liners were conducted at conditions up to 80% take-off. A new protective coating was tested successfully with a coating thickness of up to t = 1 mm. Different inspection criteria were derived in order to detect crack initiation at an early stage for a validation of the failure model. With the help of detailed pre- and post-test computer tomography (CT) scans to account for the microstructure of the CMC, the findings of the failure model were in reasonable agreement with the test results.

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Sector Rig Test of a Ceramic Matrix Composite (CMC) Combustor Liner

Cited by 5 publications

References 0 publications

Evaluation of preparation and combustion rig tests of an effusive cooled SiC/SiCN panel

Evaluation of preparation and combustion rig tests of an effusive cooled SiC/SiCN panel

FT8-3 Advanced Low Emissions Combustor Design

Development and Test of Oxide/Oxide Ceramic Matrix Composites Combustor Liner Demonstrators for Aero-engines

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