AGT-2 is a single-shaft, variable geometry automotive gas turbine engine, which was designed and built by Detroit Diesel Allison (DDA) during 1973-1974. This corporate-funded engine was sized at 167.8 kW (225 hp) for application in future General Motors' (GM) automobiles. The program was carried to the point of initial engine test, but then it was suspended because the energy crisis indicated that engine power was too large for replanned future cars. Although undeveloped, the engine was an asset because of its unique single-shaft configuration and variable geometry components. To utilize this asset for gaining information valuable to the future Department of Energy (DOE) automotive gas turbine program, the National Aeronautics and Space Administration (NASA) and DDA agreed to conduct a performance characterization test. Under NASA Contract DEN 3-4 the engine was rebuilt in a nonrecuperative configuration and was tested for approximately 49 hr between June and December 1978. The purpose of this testing was to characterize the performance of a single-shaft engine incorporating wide-range, variable geometry components. Additionally, the test results were to be used to verify engine modeling techniques using a digital computer program with component rig test performance maps. They were also used to compare component performance in the engine with their performance in rig testing. The test program explored the following area: (1) inlet guide vane mapping; (2) best specific fuel consumption (SFC) mapping; (3) idle optimization; (4) low power performance; and (5) simulated fixed geometry. Results of the testing are presented. (ERA citation 04:056871)

  • Corporate Authors:

    Detroit Diesel Allison

    13400 West Outer Drive
    Detroit, MI  United States  48239

    Department of Energy

    1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Authors:
    • Johnson, R A
  • Publication Date: 1979-9

Media Info

  • Pagination: 104 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00317725
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-CR-159654
  • Contract Numbers: EC-77-A-31-1040
  • Files: TRIS
  • Created Date: Dec 30 1980 12:00AM