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TECHNICAL PAPERS: Gas Turbines: Combustion and Fuels

Combustion System Development for the Ramgen Engine

[+] Author and Article Information
D. W. Kendrick, B. C. Chenevert, B. Trueblood, J. Tonouchi, S. P. Lawlor, R. Steele

Ramgen Power Systems, Bellevue, WA 98005

J. Eng. Gas Turbines Power 125(4), 885-894 (Nov 18, 2003) (10 pages) doi:10.1115/1.1586314 History: Received December 01, 2001; Revised March 01, 2002; Online November 18, 2003
Copyright © 2003 by ASME
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References

Heiser, W. H., and Pratt, D. T., 1994, Hypersonic Airbreathing Propulsion (AIAA Ed. Series), AIAA, Washington, DC.
Oates, G. C., 1997, Aerothermodynamics of Gas Turbine and Rocket Propulsion (AIAA Ed. Series) AIAA, Washington, DC.
Bogdanoff,  D. W., 1992, “Ram Accelerator Direct Space Launch System: New Concepts,” J. Propul. Power, 8(2), pp. 481–490.
Harsha,  P. T., and Edelman,  R. B., 1981, “Assessment of a Modular Ramjet Combustion Model,” J. Spacecraft, 19(3), pp. 430–436.
Hertzberg,  A., Bruckner,  A. P., and Bogdanoff,  D. W., 1988, “Ram Accelerator: A New Chemical Method for Accelerating Projectiles to Ultrahigh Velocities,” AIAA J., 26(2), pp. 195–203.
Yungster,  S., Eberhardt,  S., and Bruckner,  A. P., 1991, “Numerical Simulation of Hypervelocity Projectiles in Detonable Gases,” AIAA J., 29(2), pp. 187–193.
Kendrick,  D. W., Anderson,  T. J., Sowa,  W. A., and Snyder,  T. S., 1999, “Acoustic Sensitivities of Lean-Premixed Fuel Injectors in a Single Nozzle Rig,” ASME J. Eng. Gas Turbines Power, 121, pp. 429–436.
Snyder, T. S., Rosfjord, T. J., McVey, J., Hu, A., and Schlein, B., 1994, “Emissions and Performance of a Lean-Premixed GasFuel Injection System for Aeroderivative Gas Turbine Engines,” ASME Paper No. 94-GT-234.
Eckbreth, A. C., 1988, Laser Diagnostics for Combustion Temperature and Species, Turnbridge Wells, Kent, UK.
Kreith, F., and Bohn, M. S., 1986, The Principals of Heat Transfer, Harper and Row, Cambridge, UK.
Schlichting, H., 1979, Boundary-Layer Theory, McGraw-Hill, New York.
Ozawa, R. I., 1981, “Survey of Basic Data on Flame Stabilization and Propagation for High Speed Combustion Systems,” Paper No. AFAPL-TR70-81.
Zukoski, E. E., 1978, “Afterburners,” The Aerothermodynamics of Aircraft Gas Turbine Engines, Gordon C. Oates, ed., Air Force Propulsion Laboratory, AFAPL-TR-78-52, Chap. 21.
Glassman, I., 1987, Combustion, Academic Press, San Diego, CA.
Lefebvre, A. H., 1983, Gas Turbine Combustion, Hemisphere, Washington, DC.

Figures

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Ramjet engine working cycle
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The pre-prototype ramgen engine
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Ramgen engine flow details
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Vortex generator flameholder
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Pylon and rearward-facing step
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Single rotor rotation showing combustor floor temperature and pressure traces
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NG and H2 addition test plan with 1.3 cm VGs
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Combustor floor temperatures versus equivalence ratio (data and model predictions)
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Chemical reactor modeling network
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High-speed data trace for point 1
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Gas temperature modeling results for point 1
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High-speed data trace for point 2
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Gas temperature modeling results for point 2
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Gas temperature modeling results for gas off
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High-speed trace for the 1 cm tall VGs
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Temperature contours from a CFD simulation of the pylon flame stabilizer
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High-speed trace for the pylon flame stabilizer with 32 mm fuel hole
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VFD comparisons between all VG and pylon runs

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