PROPULSION

Fuel efficiency will have an important bearing on future airline growth. Realizing this, NASA has aimed at developing propulsion technology to reduce the fuel consumption of present engines by 5%, that of new engines of the late '80s by at least 12%, and that of an advanced early '90s turboprop by an additional 15%. Separate programs take up each of these aims. They are, respectively, Engine Component Improvement (ECI), Energy Efficient Engine, and Advanced Turboprops. The ECI project aims at improving the fuel efficiency of current aircraft engines, most particularly the CF6 engine manufactured by General Electric and the JT8D and JT9D engines manufactured by the Pratt & Whitney Aircraft Group. These engines power most of the commercial jet fleet and probably will through the 1980s. The second ACEE propulsion effort develops and demonstrates technology for raising thermodynamic and propulsive efficiencies in future turbofan engines. NASA intends to advance fuel-conservative technology far enough up the learning curve so that as early as 1983 an engine manufacturer could incorporate this technology into new or derivative commercial engine developments with acceptable risk. The advanced turboprop portion of the ACEE propulsion effort aims at readying technology to make possible efficient, economic, and acceptable operation of turboprop-powered commercial transports at cruise speeds up to Mach 0.8 and altitudes above 30,000 ft.

  • Corporate Authors:

    American Institute of Aeronautics and Astronautics

    1290 Avenue of the Americas
    New York, NY  United States  10019
  • Authors:
    • Nored, D L
  • Publication Date: 1978-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00188620
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Mar 14 1979 12:00AM