A mathematical modeling of well-known methods used to define turbojet main parameters aiming at solution optimization is described. The parameters considered include: compression ratio, maximum temperature for turbine, compressor efficiency, turbine efficiency, etc. By using the relationships for specific thrust, specific fuel consumption, etc., and assuming that construction and functional parameters such as calorific value, combustion efficiency, flight altitude and speed, etc., are known a function representing a sum of the ratios describing specific thrust and SFC deviations against maximum specific thrust and minimum SFC, respectively, is derived. Main parameter selection criteria pending on engine operation conditions and aircraft category are introduced. Mathematic analysis for main parameter selection optimization leads to a convex programming model for which both the function and the constraints are convex functions defined by convex fields. Although this paper makes reference to classic jet engines the method may be easily developed for by-pass engines, etc.
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ASME 1974 International Gas Turbine Conference and Products Show
March 30–April 4, 1974
Zurich, Switzerland
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7978-8
PROCEEDINGS PAPER
A Model of Convex Programming for Turbojet Main Parameter Selection Optimization Free
C. Turcanu
C. Turcanu
Institute of Fluid Mechanics and Aerospace Constructions, Bucharest, Romania
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C. Turcanu
Institute of Fluid Mechanics and Aerospace Constructions, Bucharest, Romania
Paper No:
74-GT-79, V01AT01A079; 6 pages
Published Online:
April 22, 2015
Citation
Turcanu, C. "A Model of Convex Programming for Turbojet Main Parameter Selection Optimization." Proceedings of the ASME 1974 International Gas Turbine Conference and Products Show. Volume 1A: General. Zurich, Switzerland. March 30–April 4, 1974. V01AT01A079. ASME. https://doi.org/10.1115/74-GT-79
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