PRELIMINARY ANALYSIS OF AIRCRAFT FUEL SYSTEMS FOR USE WITH BROADENED SPECIFICATION JET FUELS

An analytical study was conducted on the use of broadened specification hydrocarbon fuels in present day aircraft. A short range Boeing 727 mission and three long range Boeing 747 missions were used as basis of calculation for one-day-per-year extreme values of fuel loading, airport ambient and altitude ambient temperatures with various seasonal and climatic conditions. Four hypothetical fuels were selected; two high-vapor-pressure fuels with 35 kPa and 70 kPa RVP and two high-freezing-point fuels with -29 C and -18 C freezing points. In-flight fuel temperatures were predicted by Boeing's aircraft fuel tank thermal analyzer computer program. Boil-off rates were calculated for the high vapor pressure fuels and heating/insulation requirements for the high freezing point fuels were established. Possible minor and major heating system modifications were investigated with respect to heat output, performance and economic penalties for the high freezing point fuels.

• Corporate Authors:

  Boeing Company

  P.O. Box 3707, Commercial Airplane Group
  Seattle, WA  United States  98124
• Authors:
  • Pasion, A J
  • Thomas, I
• Publication Date: 1977-6

Media Info

• Pagination: 82 p.

Subject/Index Terms

• TRT Terms: Aircraft fuels; Engine performance; Forecasting; Freezing; Heating (Structures); Jet engine fuels; Specifications; Temperature; Thermal stresses; Vehicle power plants
• Identifier Terms: Boeing 727 aircraft; Boeing 747 aircraft
• Old TRIS Terms: Hydrocarbon fuels; Propulsion system performance
• Subject Areas: Aviation; Energy; Vehicles and Equipment;

Filing Info

• Accession Number: 00167201
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-CR-135198 Final Rpt., D6-44538
• Contract Numbers: NAS3-19783
• Files: TRIS
• Created Date: Nov 23 1978 12:00AM