High-Speed, Efficient, and Reliable Air-Breathing Hypersonic Propulsion: Experiment, Computation, and Analysis
Air-breathing hypersonic propulsion systems can make vehicle flying at Mach number 4~7, or four ~ seven times the speed of sound. It is expected to evolve into missiles, space access, and civilian plane transportation. The engine used in this propulsion system is supersonic combustion ramjet (scramjet). Because the SCRAMJET uses air from the atmosphere as the "oxidizer" to combust fuel, it does not require liquid oxygen, which is needed for rocket propulsion. That means vehicle powered by scramjet can have a larger effective payload and an affordable flying cost compared with rockets or space shuttles. Reliable combustion organizing technology is demanded for the scramjet with fixed geometry to achieve ignition, combustion, and flame stabilization. In the present paper, an ethylene-fueled scramjet model is tested in the pulse combustion wind tunnel at CARDC (China Aerodynamic Research and Development Center). The experiment inflow condition simulates the flight Ma 5.5. The gaseous ethylene is ignited by pilot flame of hydrogen. A single cavity accessed in the model upper wall is employed to facilitate combustion and stabilize the flame. The performances of combustion are extracted from measured wall pressure. The physical details are investigated by CFD (Computation Fluid Dynamics) using the AHL3D software, which is developed by CARDC. The flow-field structure, combustion zone, and distribution of reactants and products are discussed intensively. Taking the isolator undisturbed length, thrust, fuel-specific impulse as performance parameters, different fuel-injecting schemes are compared and analyzed. Finally, an engineering-feasible combustion organizing method is put forward.
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Availability:
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Supplemental Notes:
- © 2013 American Society of Civil Engineers.
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- Deng, Weixin
- Le, Jialing
- Yang, Shunhua
- Tian, Ye
- Xu, Mingheng
- Zhang, Wanzhou
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Conference:
- Fourth International Conference on Transportation Engineering
- Location: Chengdu , China
- Date: 2013-10-19 to 2013-10-20
- Publication Date: 2013-10
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 2207-2220
- Monograph Title: ICTE 2013: Safety, Speediness, Intelligence, Low-Carbon, Innovation
Subject/Index Terms
- TRT Terms: Aerodynamics; Combustion; Fluid dynamics; Fuel injection; Hypersonic aircraft; Propulsion; Supersonic aircraft; Supersonic speed
- Geographic Terms: China
- Subject Areas: Aviation; Vehicles and Equipment; I91: Vehicle Design and Safety;
Filing Info
- Accession Number: 01522401
- Record Type: Publication
- ISBN: 9780784413159
- Files: TRIS, ASCE
- Created Date: Apr 22 2014 4:06PM