Work and Technical Interests

Edward G. Ruf
Aerospace Engineer, AST, Airbreathing Propulsion Systems
Hypersonic Airbreathing Propulsion Branch
Mail Stop 168
NASA Langley Research Center
Hampton, VA 23681-2199
(757) 864-6356 voice
(757) 864-6343 fax
E.G.Ruf@LaRC.NASA.GOV

The fate of NASA's Hypersonics Program, well not any longer. Hypersonics appears to be in the FY06 plan now.

Hyper-X Engine/Flowpath Performance and Operability Flight Test Conduct and Analysis

• Propulsion lead for real-time flight test data acquisition and analysis in the Flight Operations Support Center at LaRC
• Post flight data inspection and analysis
• Comparison of post flight data with ground test data

Hyper-X Engine/Flowpath Performance and Operability Ground Verification Testing

• Hyper-X Flight Engine/Vehicle Flowpath Simulator (HXFE/VFS) in the LaRC 8-Ft HTT
• HXFE/VFS Post Test 8-Ft HTT Calibration
• Hyper-X Engine Model/Full Flowpath Simulator (HXEM/FFS) in the LaRC 8-Ft HTT
• Dual Fuel Experimental (DFX) Engine in the LaRC HAPB CHSTF (Mach 5)
• Dual Fuel Experimental (DFX) Engine in the LaRC HAPB AHSTF (Mach 5)

Hyper-X Follow-On Hydrocarbon Fueled Flight Demonstrator

• Government Insight/Oversight - ISTAR JP-7 Fueled RBBC Engine Development Program
  • Member of:
    • Flowpath and Performance IPT
    • Direct Connect Test IPT
    • Direct Connect Fuel Heater IPT
    • Ground Test Engine IPT
    • Injector Characterization Test IPT
    • GTE Wind Tunnel Trade Study Team
  • Injector Characterization Test Conduct

• Government Independent Flowpath Performance Assessment Team
  • LaRC Dual-Mode Scramjet Performance Assessment Team
    • Experimental Liaison and Performance Analysis of Rocketdyne-Boeing Engine

Curator of the Hypersonic Airbreathing Propulsion Banch Web Site

Recent Publications/Presentations

Free-jet Testing of a REST Scramjet at Off-Design Conditions, E. G. Ruf, JANNAF 41st Combustion, 29th Airbreathing Propulsion, 23rd Propulsion Systems Hazards Joint Subcommittee Meeting, San Diego, California, December 4-8, 2006.

Free-jet Testing of a REST Scramjet at Off-Design Conditions, M. K. Smart and E. G. Ruf, AIAA 2006-2955, 25th AIAA Aerodynamic Measurement Technology and Ground Testing Conference, San Francisco, California, June 5 - 8, 2006.

Ruf, E.G., Cabell, K.F., Shih, A.T. and Witte, D.W., "Hyper-X, Mach 7 Scramjet Ground Test to Flight Comparisons," JANNAF 40th Combustion, 28th Airbreathing Propulsion, 22nd Propulsion Systems Hazards, 4th Modeling and Simulation Joint Subcommittee Meeting, Charleston, South Carolina, June 13-17, 2005

Ruf, E.G., Cabell, K.F., Shih, A.T. and Witte, D.W., "Initial Comparison of Hyper-X Second Flight Test Data with Ground Test Data," (Presentation only) Hyper-x/X-43A Specialist Session II, 52nd JANNAF Propulsion Meeting/1st Liquid Propulsion Meeting, Las Vegas, NV, May 10-13, 2004

Hyper-X, Mach 7 Scramjet Ground Test to Flight Comparisons, Edward G. Ruf, Karen F. Cabell, Ann T. Shih, and David W. Witte to be presented at JANNAF 40th Combustion, 28th Airbreathing Propulsion, 22 ^nd Propulsion Systems Hazards, 4th Modeling and Simulation Joint Subcommittee Meeting, Charleston, South Carolina, June 13-17, 2005

Initial Comparison of Hyper-X Second Flight Test Data with Ground Test Data, Edward G. Ruf, Karen F. Cabell, Ann T. Shih, and David W. Witte, (Presentation only) Hyper-x/X-43A Specialist Session II, 52 ^nd JANNAF Propulsion Meeting/1st Liquid Propulsion Meeting, Las Vegas, NV, May 10-13, 2004.

Hyper-X Flight Engine Ground Testing for Flight Risk Reduction, Lawrence D. Huebner; Kenneth E. Rock; Edward G. Ruf; David W. Witte; Earl H. Andrews Jr, AIAA Journal of Spacecraft and Rockets - Vol. 38, No. 6, November–December 2001, (PDF-776KB)

Hyper-X Flight Engine Ground Testing for X-43 Flight Risk Reduction, L. D. Huebner, K. E. Rock, E. G. Ruf , D. W. Witte, and E. H. Andrews, Jr. AIAA/NAL-NASDA-ISAS 10 ^th International Space Planes and Hypersonic Systems and Technologies Conference, Kyoto, Japan, AIAA 2001-1809, April 24-27, 2001, pp. 14, (Paper: PDF-1.19MB; Presentation: PDF-2.58MB ).

Results of the Mach 7 Hyper-X Flight Engine Tests in the NASA Langley 8-Foot High Temperature Tunnel, E. G. Ruf, D. W. Witte, L. D. Huebner, K. E. Fischer, and E. H. Andrews, Jr. 37 ^th JANNAF CS/APS/PSHS Joint Meeting, Monterey, CA November 13-17, 2000.

Hyper-X Engine Testing in the NASA Langley 8-Foot High Temperature Tunnel, L. D. Huebner, K. E. Rock, D. W. Witte, E. G. Ruf and E. H. Andrews, Jr. AIAA/AMSE/SAE/ASEE 36 ^th Joint Propulsion Conference, Huntsville, AL, AIAA 2000-3605, July 17-19, 2000, pp. 12. (PDF-245KB).

Results of the Mach 7 Hyper-X Engine Model Testing in the NASA Langley 8-Foot High Temperature Tunnel, D. W. Witte, E. G. Ruf, K. E. Fischer, L. D. Huebner and E. H. Andrews, Jr. 1999 36 ^th JANNAF CS/APS/PSHS Joint Meeting, Cocoa Beach, FL, October 18-21, 1999, pp. 30.

Results from Ground Tests of the Mach 5 Hyper-X Scramjet Engine, K. E. Fischer, K. E. Rock, R. G. Irby, E. G. Ruf and R.L. Gaffney 1998 35 ^th JANNAF CS/APS/PSHS Joint Meeting, Tuscon, AZ, December 7-11, 1998, pp. 29.

An Analytic Investigation of a Combusting Hydrogen-Fueled Ramjet and Comparison with a Mechanically Throttled Simulation, D. P. Capriotti and E. G. Ruf, 1997 34 ^th JANNAF CS/APS/PSHS Joint Meeting, West Palm Beach, FL, October 27-31, 1997, pp. 13.