Project 074 Low Emissions Premixed Combustion Technology for Supersonic Civil Transport

Details

• Alternative Title:
  Low Emissions Premixed Combustion Technology for Supersonic Civil Transport
• Creators:
  Steinberg, Adam
• Corporate Creators:
  Georgia Institute of Technology. School of Aerospace Engineering
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment
• Subject/TRT Terms:
  ASCENT Civil Aviation Combustion Commercial Transportation Pollutants Supersonic Transport Planes
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment
• Abstract:
  This project advanced the state-of-the-art in fuel-lean premixed prevaporized (LPP) combustor technology for use in future civil supersonic transport (CST) aircraft engines. Cruise conditions for CST aircraft are such that combustors operate in a different parameter space than combustors for traditional subsonic aircraft. These conditions lead to challenges meeting environmental targets, particularly regarding NOx. LPP combustors can enable step-change improvements in NOx emissions, but have different operability constraints and less mature design tools compared to current combustor architectures. This project partnered advanced test facilities, state-of-the-art laser diagnostics, high-fidelity numerical simulations, and reduced order modeling to gain new insight regarding LPP combustor performance and develop/validate design tools. A LPP combustor concept was designed, fabricated, commissioned, and tested. Laser diagnostics from were used to measure the velocity field, flame structure, fuel spray, fuel/air mixing, and other aspects of the combustor performance across operating conditions and with both conventional and sustainable aviation fuels. Emissions were in line with NASA's ambitious targets for future CST aircraft. Operability limits, flame structure, and combustion dynamics were well-explained by theoretical considerations and reduced order models. The experimental data provided quantitative benchmarks for simulations, and identified areas for fruitful model improvement.
• Format:
  PDF
• Funding:
  13-C-AJFE-GIT-142
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:1dbdb062309eafb45ae8214f01314fbe4ad307bbd6e83764c7ca8e455a57faa9b2673bce480e41f0e91248c16201c1796ffab9f1f2105f70662b46a2a9e26277
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89828/dot_89828_DS1.pdf
• File Type:
  [PDF - 1.80 MB ]