GLTRS--Glenn
TITLE AND SUBTITLE:
A Probabilistic Approach to Aeropropulsion System Assessment

AUTHOR(S):
Michael T. Tong

REPORT DATE:
July 2000

FUNDING NUMBERS:
WU-714-99-20-00

PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration
John H. Glenn Research Center at Lewis Field
Cleveland, Ohio 44135-3191

PERFORMING ORGANIZATION REPORT NUMBER:
E-12036-1

SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration
Washington, DC 20546-0001

REPORT TYPE AND DATES COVERED:
Technical Memorandum

SPONSORING/MONITORING AGENCY REPORT NUMBER:
NASA TM-2000-210334

SUPPLEMENTARY NOTES:
Portions of this material were presented at the 45th International Gas Turbine and Aeroengine Technical Congress sponsored by the American Society of Mechanical Engineers, Munich, Germany, May 8-11, 2000. Responsible person, Michael T. Tong, organization code 2400, (216) 433-6739.

ABSTRACT:
A probabilistic approach is described for aeropropulsion system assessment. To demonstrate this approach, the technical performance of a wave rotor-enhanced gas turbine engine (i.e. engine net thrust, specific fuel consumption, and engine weight) is assessed. The assessment accounts for the uncertainties in component efficiencies/flows and mechanical design variables, using probability distributions. The results are presented in the form of cumulative distribution functions (CDFs) and sensitivity analyses, and are compared with those from the traditional deterministic approach. The comparison shows that the probabilistic approach provides a more realistic and systematic way to assess an aeropropulsion system.

SUBJECT TERMS:
Probabilistic; Aeropropulsion; Gas Turbine

NUMBER OF PAGES:
15

PDF AVAILABLE FROM URL:
2000/TM-2000-210334.pdf
( 800 KB )

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