Area 6: Ignition and Combustion Performance of Propellants for Rocket Propulsion

The co-combustion characteristics of Fujian anthracite with two biomasses (i.e. Cunninghamia lanceolata) and Mycorrhizal plants in different proportions were investigated using thermogravimetric analysis. The result showed that first, the co-combustion processes of Fujian anthracite with the two biomasses ( Cunninghamia lanceolata and Mycorrhizal plants) proceeded in three stages, separation and combustion of volatiles, combustion of fixed carbon in the biomass, and combustion of fixed carbon in Fujian anthracite. Secondly with increasing proportion of biomass, the co-combustion of Fujian anthracite with Cunninghamia lanceolata and Mycorrhizal plants shifted to a low-temperature zone, with a lower ignition temperature, shortened burnout time, and growth of both combustibility index ( Ci) and comprehensive combustion index S. Finally, at different mixing proportions, the comprehensive combustion index S during co-combustion of FW with Mycorrhizal plants is always larger than that during co-combustion with Cunninghamia lanceolata; therefore, FW and Mycorrhizal plants exhibit superior comprehensive co-combustion performance to FW and Cunninghamia lanceolata. Analysis of various parameters pertaining to combustion performance shows that the ignition and combustion performance of Fujian anthracite was improved as long as the Fujian anthracite was mixed with around 20% biomass.

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Bifunctional core-shell nAl@MOF energetic particles with enhanced ignition and combustion performance

Chemical Engineering Journal ◽

10.1016/j.cej.2021.132909 ◽

2021 ◽

pp. 132909

Author(s):

Kang Xue ◽

Huaiyu Li ◽

Lun Pan ◽

Yiran Liu ◽

Xiangwen Zhang ◽

...

Keyword(s):

Energetic Particles ◽

Core Shell ◽

Combustion Performance ◽

Ignition And Combustion

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Investigation of GTL-Like Jet Fuel Composition on GT Engine Altitude Ignition and Combustion Performance: Part II—Detailed Diagnostics

Volume 2: Combustion, Fuels and Emissions, Parts A and B ◽

10.1115/gt2011-45510 ◽

2011 ◽

Cited By ~ 12

Author(s):

Thomas Mosbach ◽

Gregor C. Gebel ◽

Patrick Le Clercq ◽

Reza Sadr ◽

Kumaran Kannaiyan ◽

...

Keyword(s):

High Speed ◽

Operating Conditions ◽

Research Centre ◽

Fuel Injector ◽

Fuel Temperature ◽

High Speed Imaging ◽

Combustion Behavior ◽

Combustion Performance ◽

Ignition And Combustion ◽

Spectrally Resolved

The ignition and combustion performance of different synthetic paraffinic kerosenes (SPKs) under simulated altitude relight conditions were investigated at the altitude relight test rig at the Rolls-Royce Strategic Research Centre in Derby. The conditions corresponded to a low stratospheric flight altitude between 25,000 and 30,000 feet. The combustor under test was a twin-sector representation of an advanced gas turbine combustor and fuel injector. Five different SPKs and Jet A-1 were tested at different mass flow rates of air and fuel, and at two different sub-atmospheric air pressures and temperatures. The fuel temperature was kept approximately constant. Simultaneous high-speed imaging of the OH* and CH* chemiluminescence, and of the broadband luminosity was used to visualize both the transient flame initiation phenomena and the combustion behavior of the steady burning flames. In addition, flame luminosity spectra were recorded with a spectrometer to obtain spectrally resolved information concerning the different chemiluminescence bands and the soot luminosity. These investigations were performed in conjunction with the comparative evaluation of the ignition and stability regimes of the five SPKs, which is the subject of a separate complementary paper [1]. We found that the observed flame initiation phenomena, the overall combustion behavior and the different ratios of the chemiluminescence from the OH*, CH* and C2* radicals were not strongly dependent on the fuels investigated. But, the SPK flames showed for all combustor operating conditions significantly lower soot luminosities than the corresponding Jet A-1 flames, indicating a potential benefit of the SPK fuels.

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