Gas-gas injector technology for full flow stage combustion cycle application

Farhangi, S.; Yu, Tao; Rojas, L.; Sprouse, Kenneth M.; McKinnon, J. Thomas

doi:10.2514/6.1999-2757

Cited by 20 publications

(8 citation statements)

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“…3 Because the preburner was stable, the blank acoustic cavity ring remained installed for all tests. Six of these tests were conducted with the preburner installed in a subscale staged combustion assembly featuring a gas-gas main injector.…”

Section: Purchased From American Institute Of Aeronautics and Astronamentioning

confidence: 99%

“…2 For oxygen/hydrogen propellants, an engine cycle with oxidizer-rich gases that drive the oxidizer turbopump and fuel-rich gases that drive the fuel turbopump would provide these benefits relative to a fuel-rich staged combustion cycle. 3 ' 4 This permits throttling of the main chamber over a wide range while maintaining injection-coupled combustion stability margins, because the injection pressure drop ratio is relatively insensitive to operating conditions for gaseous propellants. First, all of the propellants flow through the preburners.…”

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confidence: 99%

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Oxidizer-Rich Preburner Technology for Oxygen/Hydrogen Full Flow Cycle Applications

2004

Liquid Rocket Thrust Chambers

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Section: Purchased From American Institute Of Aeronautics and Astronamentioning

confidence: 99%

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confidence: 99%

Oxidizer-Rich Preburner Technology for Oxygen/Hydrogen Full Flow Cycle Applications

2004

Liquid Rocket Thrust Chambers

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“…In the 1990s, the Pennsylvania State University (PSU), Rocketdyne and NASA cooperated in gas-gas injector design and single-and-multi-element injector tests, but their research mainly aimed to serve as an engineering demonstration engine (Integrated Powerhead Demonstrator, IPD). The average flowrate of the injector elements applied in the IPD main chamber was even lower than that used in SSME (Space Shuttle Main Engine) main chamber [4]. All of the aforementioned studies focused on the mixing and combustion characteristics or the engineering application for specific engines.…”

Section: Introductionmentioning

confidence: 99%

“…Since the 1990s, as a key technology of the Full Flow Stage Combustion (FFSC) cycle engine, the gas-gas injector technology has been preferred [1][2][3][4][5][6][7]. Gas-gas injectors are also widely used in other engines [8].…”

Section: Introductionmentioning

confidence: 99%

High flowrate injector with gaseous hydrogen and gaseous oxygen

Wang

Cai

Gao

et al. 2011

Sci. China Technol. Sci.

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In order to get a high flowrate gas-gas injector and its design methodology, the combustion flow field of a typical shear-coaxial injector was analyzed firstly. The dimensional analysis was applied in the phenomenon of gas-gas combustion, and design parameter optimization and a structure improvement were also carried out. A high flowrate single-element injector with high H 2 /O 2 momentum ratio and tapered O 2 post tip was obtained and validated by both numerical and experimental studies. This high flowrate injector has simple construction and it can effectively enhance the mixing, decrease the combustion completion length and also has a benign heat environment. Furthermore, based on the study of the single-element injector, numerical optimization and validation experiments were conducted successively on a multi-element injector equipped with high flowrate injection elements. The multi-element injector with the high flowrate elements started up and shut down smoothly, and operated steadily without any stability aids. In the combustor designed with nominal parameters, this injection element can obtain high combustion efficiency with a flowrate of 3.7 times that of SSME main injector element and shows a benign chamber wall heat compatibility. This injector design and the design methodology can become a reference for the design of other types of injectors for liquid rocket engines. liquid rocket engine, gas-gas injector, shear-coaxial injector,, Large Eddy Simulation, subscale combustor, experiment Citation: Wang X W, Cai G B, Gao Y S, et al. High flowrate injector with gaseous hydrogen and gaseous oxygen.

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“…Furthermore, this method was used to investigate the heat transfer characteristics of a shearcoaxial single-element gas-gas injector combustion chamber. The full flow stage combustion (FFSC) cycle engine is preferable because of its high performance and high reliability, for which gas-gas injector technology is a key technology for this kind of engine and has received extensive studies (Archambault et al, 2002a(Archambault et al, , 2002bDavis & Compbell, 1997;Farhangi et al, 1999;Foust et al, 1996;Meyer et al, 1996;Schley et al, 1997;Tucker et al, 1997;Tucker, 2007aTucker, ,2008bLin et al, 2005;Cai et al, 2008;Wang et al, 2009aWang et al, , 2010bWang et al, , 2010c. Also, gas-gas injectors have been widely used on other engines and combustion devices (Calhoon, 1973;Groot, 1997).…”

Section: Introductionmentioning

confidence: 99%