Experimental studies on methane-fuel laboratory scale ram combustor
- Kawasaki Heavy Industries, Limited, Akashi (Japan)
The laboratory scale ram combustor test program has been investigating fundamental combustion characteristics of a ram combustor, which operates from Mach 2.5 to 5 for the super/hypersonic transport propulsion system. In the previous study, combustion efficiency had been found poor, less than 70 percent, due to a low inlet air temperature and a high velocity at Mach 3 condition. To improve the low combustion efficiency, a fuel zoning combustion concept was investigated by using a subscale combustor model first. Combustion efficiency more than 90 percent was achieved and the concept was found very effective. Then a laboratory scale ram combustor was fabricated and combustion tests were carried out mainly at the simulated condition of Mach 5. A vitiation technique wa used to simulate a high temperature of 1,263 K. The test results indicate that ignition, flame stability, and combustion efficiency were not significant, but the NO{sub x} emissions are a critical problem for the ram combustor at Mach 5 condition.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 109807
- Report Number(s):
- CONF-940626-; ISSN 0742-4795; TRN: IM9543%%108
- Journal Information:
- Journal of Engineering for Gas Turbines and Power, Vol. 117, Issue 3; Conference: 39. international gas turbine and aeroengine congress and exposition, The Hague (Netherlands), 13-16 Jun 1994; Other Information: PBD: Jul 1995
- Country of Publication:
- United States
- Language:
- English
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