AIRFRAMES AND AERODYNAMICS

NASA has undertaken efforts to develop, and accelerate application by the commercial aircraft industry, of advances in aerodynamics, avionics, and controls, and structures and materials that will reduce fuel consumption and operating costs of future CTOL transports. The activities form part of the Aircraft Energy Efficiency (ACEE) program. The supercritical airfoil coupled with higher aspect ratio and lower sweep represents the one aerodynamic innovation likely to find widespread application in all new transport designs and in any derivative embodying a new wing. The ACEE program also includes research on the use of active controls to alleviate wing loads and flutter, the application of advanced composites such as Kevlar and graphite/epoxy systems to commercial transports, and the reduction of fuel 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  USA  10019
  • Authors:
    • Leonard, R W
  • Publication Date: 1978-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00188619
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Mar 14 1979 12:00AM